SOLEUSAIR
Introduction and features
Technical Service Manual
for 13SEER DC INVERTER 24K
Model
Remarks
KFHHP-22
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Model of Outdoor Unit
Compressor Model
Compressor Type
L.R.A. (A)
KFHHP-22-OD
C-6RZ146H1A
Rotary
40
Compressor RLA(A)
Compressor Power Input(W)
Overload Protector
Throttling Method
Starting Method
8.4
1640
1NT11L-3979
Capillary throttling
Transducer starting
-10~43
Working Temp Range (
Condenser
)
?
ꢀ
?
Aluminum fin-copper tube
Pipe Diameter (in)
Rows-Fin Gap(in)
φ0.3748
2-0.055
Coil lengthxheightxcoil width(in)
Fan Motor Speed (rpm)
Output of Fan Motor (W)
Fan Motor RLA(A)
26.9X32X1.73
780/600
60
0.25
Fan Motor Capacitor (uF)
Air Flow Volume of Outdoor Unit
Fan Type-Piece
Fan Diameter (in)
Defrosting Method
3
Outdoor
unit
/
Axial fan –1
φ18.11
Auto defrost
T1
Climate Type
Isolation
I
Moisture Protection
IP24
Permissible Excessive
Operating Pressure for the
Discharge Side(MPa)
Permissible Excessive
Operating Pressure for the
Suction Side(MPa)
4
/
Sound Pressure Level dB (A)
Dimension (W/D/H)( in)
Package Dimension(W/D/H)(in)
Net Weight /Gross Weight (lb)
Refrigerant Charge (oz)
59/58
37.4X16.22X33.07
43.3X17.7X35.6
141.1/152.1
R410a/84
Length (ft)
26.25
Φ9.52(3/8”)
Φ16(5/8”)
40
Outer
Liquid Pipe (mm)
Diameter Gas Pipe (mm)
Max Height (ft)
Distance Length (ft)
Connection
Pipe
100
The data above is subject to change without notice .Please refer to the nameplate of the unit
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Components name
cover of electrical box
manual switch
Indoor unit
front panel
front case
air guider
filter
dispaly board
remote control
manual switch
display
connecting pipe and calbe
heating
cooling
run
receiver
Outdoor unit
drain hose
air outlet grill
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Overall and installation dimension
4
Overall and installation dimension of indoor unit KFHHP-22-ID
air inlet grill
left tube-exit sign
top view
right tube-exit sign
rear view
Unit:mm
Ceiling
right
left
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Overall and installation dimension of outdoor unit KFHHP-22-OD
unit :mm
over
over
over
bolt
nutGgggg
wrench
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Electrical diagram
5
KFHHP-22
The diagram above is subject to change without notice.Please refer to the diagram label on the unit
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6
Function manual and operating method of controller
Function manual
6.1
6.1.1 Temperature parameters
ƹ Room set temperatures(Tset)
ƹ Room ambient temperatures(Tin-amb)
6.1.2 Fundamental function
6.1.2.1 Cooling mode
ƽtemperature setting range is 16-30¨C
ƽunder this mode, fan motor of indoor unit operates at setting speed.
ƽwhen compressor stops because of malfunction protection, fan motor of indoor unit still operates at setting speed.
6.1.2.2 Dehumidifying mode
ƽTemperature setting range is 16-30`C
ƽIndoor fan motor runs at low setting speed.
ƽwhen compressor stops because of malfunction protection, indoor motor still operates at low speed.
6.1.2.3 Fan mode
ƽTemperature setting range is 16-30`C
ƽIndoor fan can operates at selected speed of HIGH,MED,LOW and AUTO.
6.1.2.4 Heating mode
ƽTemperature setting range is 16-30`C
ƽsending out remaining heat: after indoor fan runs at setting speed for 60s
ƽanti cold air: indoor fan will start in 2 minutes at latest
ƽwhen compressor stops at setting temp., indoor fan motor operates in discharging remaining heat
ƽwhen compressor stops because of malfunction protection, indoor fan runs in discharging remaining heat.
ƽon receiving signal of defrosting, indoor fan motor stops; when defrosting ends, fan motor runs under anti cold air status.
6.1.2.5 Auto mode
In this mode, indoor fan will run in Cooling, heating, air discharging mode according to the change of ambient temperature. And the protection
function is the same as under Cooling, Heating mode.
6.1.3 Other control
6.1.3.1 auto control of speed of indoor fan
indoor fan runs automatically at HIGH,MED,LOW speed according to the change of ambient temperature. The interval of speed switching is 3
minutes and 30 seconds at least. When in dehumidifying mode, fan runs at setting low speed.
6.1.3.2
when the power is on, the air guide louver will turns to A position counter-clockwise and closes the air outlet went.; after the unit starts in heating
mode, it turns to the max air outlet position D2; after unit starts in cooling mode, it will turns to D1 position and then back to L1 position; when in swinging
state, it will swing between L1 and D1 in cooling; between L and D2 in heating. After the unit is off, it will turns back to A position to close the air outlet
vent.
6.1.3.3 Timer control
The auto-start timer function can be set when the unit is off. When it reaches the time, the controller will function in the originally set mode. The
interval is 0.5 hour and the range of timer is 0.5-24 hours.
The auto-stop timer can be set when the unit is on. When it reaches the time, unit will be off automatically. The interval is 0.5 hours and range of
timer is 0.5-24 hours.
6.1.3.4 Sleep control
When units in cool or dry mode, after sleep mode has been set properly, the preset Tset will be increased by 1ć after sleep program has run for 1
hour. And Tset will be increased by another 1ć after 2 hours.Tset has been increased by 2ć totally in two hours. Then the unit will run at this set
temperature and at the set speed.
-8-
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When unit is in HEAT mode, after sleep mode has been set properly, the preset Tset will be increased by 1ć after the sleep program has run for 1
hour, and Tset will be decreased by another 1ć after 2 hours.Tset has been increased by 2ć totally in two hours Then the unit will run at this
temperature and at the set speed.
In Auto OR fan mode, the setting temp. will not change.
6.1.3.5 Toggle switch
1, If memory function is on, when unit is power-on and start operation and toggle switch is in STOP position, the unit will operates with STOP position; or
else unit starts under power-off memory. There is memory function with AUTO,RUN,STOP position. TEST position is without memory function.
2, If there is no memory function, unit will operate under previous switch position.
ƾ When toggle switch is on AUTO, unit operates in AUTO mode, and air swing on; if there is signal of remote control, then unit operates according to
signal.
ƾ When toggle switch is on TEST, indoor fan runs in high speed, and air swing on; indoor unit sends out signal of Cool mode on 16ć and 30ć
ambient temperature to outdoor unit. If malfunction of indoor or outdoor temp. sensor is detected, buzzer will give out beep to alarm. If there is signal of
remote control, unit operates as per remote control and indoor unit sends remote control signal to outdoor unit.
6.1.3.6 Communication failure
Communication failures happen if there is no correct signal received for 3 minutes
6.1.3.7 Buzzer control
When unit is power on or receiving remote control signal or the toggle switch is pressed, the buzzer will give out a beep.
6.1.3.8 Power-off memory function
1) contents of memory: mode(AUTO, COOL, DEHUMIDIFYING, HEATING, etc), setting fan speed, setting temperature, Timing etc.
2) if unit was on when power off, 3 minutes is delayed for indoor unit to send signal of starting to outdoor unit.
3) When power is on again, unit will operate in previous mode before power-off.
4) If there was no timer function in the last remote control dictation, then unit will memorize the last remote control dictation and operate according to
the previous mode
5) If there was timer function in the last remote control dictation and system was power-off before the time set, unit will memorize the last timer function
and it will time from the begin of restarting.
6) If there was timer function in the last remote control dictation and system was power-off at the time set, unit will operate in the mode before
power-off but timer won’t be on.
6.1.3.9 Failure detect of indoor temp. sensor
When unit is defrosting, temp sensor malfunction is not under detection. In other status temp sensor malfunction of indoor ambient and tube are
under malfunction. If the temperature is not between the minimum and maximum for continuous 30s, signal of error will be sent out.
When indoor temp sensor failures, it will send signal of closing down unit to outdoor unit.
6.1.3.10 Method for testing (min, med, nominal, max cooling or heating)
Temp. set in remote control
16
17
18
19
In Cool mode, press Sleep button 4 Min. cooling
Med. Cooling
Nominal cooling
Max. cooling
times in succession within
seconds
3
Temp. set in remote control
27
28
29
30
In Heat mode, press Sleep button 4 Min. heating
Med. heating
Nominal heating
Max. heating
times in succession within
seconds
3
Press any button to exit.
Cooling mode: temperature signal sent to outdoor unit is compulsively set 16ć when cooling capacity is min, med, nominal or max.
Heating mode: temperature signal sent to outdoor unit is compulsively set 30ć when heating capacity is min, med, nominal or max.
Notice: when test is started, relevant indicating lamp blinks quickly. If there is malfunction, it will be displayed directly
-9-
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Controller function of outdoor unit
6.1.1 Parameters of temperature
Exhausting gas temperature of outdoor unit(Tex)
Ambient temperature of outdoor unit(Tam)
6.1.2 Fundermental function of system
In wichever mode, once compressor start-up, it can only be close down 6 minutes later at
least(not including malfunction protection/mode switch which requires compressor to stop);Once
compressor closes down, it can only restart 3 minutes later at least(including mode switch, stop by
remote control etc.);compressor starts up after outdoor motor runs for 5 seconds
6.1.2.1 Cool mode
6.1.2.1.1 Working conditions and process of cooling
ƽwhen compressor in closing down state and (Tin-am-Tset)ı0.5ć,if unit start in cooling mode,
then cooling mode operates; outdoor fan motor and compressor start to run. The frequency of
compressor can be adjusted automatically according to need of cooling power by micro-computer.
ƽduring cooling process, when 0ćİ(Tset-Tin-am) İ2ć,the compressor operates in low
frequency.
ƽduring cooling process, when 0 need of cooling power and (Tset-Tin-am)˚2ć, then compressor
stops running. And outdoor fan motor stops in 60s.
NJIn this mode, there is no power supply for reversing valve. Range of temperature setting is 16-30
ć.
6.1.2.1.2 Frost-proof protection
In cool and dehumidifying mode, when frost-proof protection is detected, the compressor will run in
lower frequency or stops. And outdoor fan motor stops in 60s. When frost-proof protection ends,
Compressor resumes running.
6.1.2.1.3 Controlling principles of outdoor fan motor
If Tout-amı26ć, the fan motor runs in high speed.
If Tout-amİ24ć, the fan motor runs in low speed.
If 24ć˘Tout-amb˘26ć, the fan motor runs in original speed.
After fan motor runs in compulsive high speed for 3 minutes in starting-up, then the speed will be
controlled by the set principles
6.1.2.2 Dehumidifying mode
ƽWorking conditions and process of dehumidifying: the same with the ones in cooling mode
ƽstatus of 4-way valve: closed
ƽrange of temperature setting: 16-30 ć
ƽprotection function: the same with the ones in cooling mode.
6.1.2.3 Fan mode
ƽcompressor, outdoor fan motor and 4-way valve are closed and stopped.
ƽrange of temperature setting: 16-30 ć
6.1.2.4 Heating mode
6.1.2.4.1 Working conditions and process of heating
ƽwhen compressor in closing down state and (Tin-amb-3) ćİ(Tset-0.5) ć, if unit start in heating
mode, then heating mode operates. Outdoor fan motor ,compressor and 4-way valve start to run.
The frequency of compressor can be adjusted automatically according to need of heating power by
micro-computer.
-10-
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ƽ during heating process, when Tset ćİ(Tin-amb-3) ć İ(Tset +2)ć,the compressor operates
in low frequency.
during heating process, when (Tin-amb-3) ć˚(Tset +2)ć, then compressor stops running. And
outdoor fan motor stops in 60s.
Notice: It will take 2 minutes to power-off in 4-way valve when the unit closes down in heating mode
or switch from heating mode to other modes.
NJIn this mode, there is power supply for reversing valve. Range of temperature setting is 16-30ć.
6.1.2.4.2 Controlling principles of outdoor fan motor
If Tout-ambİ19ć, the fan motor runs in high speed.
If Tout-ambı21ć, the fan motor runs in low speed.
If 19ć˘Tout-amb˘21ć, the fan motor runs in original speed.
After fan motor runs in compulsive high speed for 3 minutes in starting-up, then the speed will be
controlled by the set principles
6.1.2.4.3 Defrosting process
When defrosting conditions is detected, if compressor run in high frequency, then frequency will
be demultiplied first. Later compressor stops running and indoor fan motor stops. Outdoor fan motor
stops in 50s later. 4-way valve will be power-off in 45s. The defrosting functions operates when
compressor restart in 55s and frequency reaches 90hz. When the defrosting is over, the frequency
will drop until it reaches 60hz. 50s later 4-way valve and outdoor fan motor will be power-on.Then
frequency of compressor will rise to the required. But indoor fan motor have to start 2 minutes later
at least.
If compressor closes down for malfunction in heating mode, indoor motor will only exhausting
remaining heat.
6.1.3 Universal protection function of cool, heating, dehumidifying and auto
mode
6.1.3.1 Overloading protection function
When over-high temperature of tube (Ttube) is detected, frequency of compressor will be
demultiplied or limited. When Ttube is beyond maximum, compressor stops until Ttube restrores to
normal value.
If there are 6 continuous times of over-high Ttube protection, compressor will stop and can not
restart by itself. It can only be restart by pressing “ON/OFF” button. In operation if operating time of
compressor is over 7 minutes, the number of times will be zero cleared.
6.1.3.2 Time-delay protection of compressor
Compressor will restart in 3 minutes after it closes down.
6.1.3.3 High exhausting gas temp. protection of compressor
When over-high temperature of gas exhausted (Tex) is detected, frequency of compressor will
be demultiplied or limited. When Tex is beyond maximum, compressor stops until Ttube restrores to
normal value.
If there are 6 continuous times of over-high Tex protection, compressor will stop and can not
restart by itself. It can only be restart by pressing “ON/OFF” button. In operation if operating time of
compressor is over 7 minutes, the number of times will be zero cleared.
6.1.3.4 Current protection function
(1) overcurrent protection
If current of whole unit is beyond max. limit, unit will close down as if indoor temperature reaches
the set temperature. Unit will restore automatically after compressor has been stop for 3 minutes.
-11-
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If there are 6 continuous times of protection, compressor will stop and can not restart by itself
and send signal of error to indoor unit. It can only be restart by pressing “ON/OFF” button. In
operation if operating time of compressor is over 7 minutes, the number of times will be zero
cleared.
(2) frequency demultiplying, limitation of current control
If current of whole unit is high, frequency of compressor will be demultiplied or limited. If normal
current value is detected, whole unit restore to operate normally.
6.1.3.5 Communication failure
When there is no right signal from indoor unit for continuous 3 minutes or no right signal from
driving slug within 60s, communication failure happens. Outdoor unit will closes down.
6.1.3.6 Module protection
Compressor will detect signal of module protection right away after it starts. Compressor closes
down in module protection status as if room temperature reaches the set value. And relevant error is
displayed. Compressor restores to run after stopping for 3 minutes.
If there are 6 continuous times of protection, compressor will stop and can not restart by itself. It
can only be restart by pressing “ON/OFF” button. In operation if operating time of compressor is
over 7 minutes, the number of times will be zero
6.1.3.7 overheating protection of module
When IPM temperature is too high, frequency of compressor will be demultiplied or limited. Wen
IPM temperature is beyond maximum, compressor closes down. The whole unit can only restart
when IPM temperature returns to norm and compressor has been stopping for 3 minutes.
If 3 times of IPM temperature protection happens in 1 hour, compressor will stop and can not
restart by itself. It can only be restart by pressing “ON/OFF” button.
6.1.3.8 overloading protection of compressor
When overloading switch of compressor operates, it will closes down as if room temperature
reaches set value. Whole unit can only restart when compressor has been stopping for 3 minutes
and overload switch resets.
6.1.3.9 PFC protection
When air conditioner starts in cooling, heating or dehumidifying mode, compressor starts and
frequency rises to 30hz. PFC protection is on after it runs for 30s.
Compressor closes down in whatever condition, PFC and compressor closes down at the same
time.
PFC protection signal will be detected once after PFC starts; when PFC protection is on, PFC and
compressor closes down at the same time.
PFC restores automatically 3 minutes later after failure happens
6.1.3.10 Testing of malfunction of temp. sensor and IPM overheating
(1) In stand-by status outdoor tube temperature sensor, ambient temperature sensor and sensing
device error of overheating IPM are not under detection.
(2) error of temp. sensor of exhausting gas and error of IPM overheating will be under detection after
the whole unit is on and compressor operates for continuous 3 minutes.
(3) within 10 minutes after compressor starts or within 10 minutes after defrosting or oil returning in
heating mode, error of outdoor tube temp. sensor are not under detection.
(4) when error of IPM overheating or failure of temp. sensor is detected, whole unit will closes down
immediately.
-12-
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6.1.3.11 The status of indicator in outdoor unit
Notice: When the unit is power-on again, the times of all the protection above (including: overloading protection, high
exhausting gas temp. protection of compressor, overcurrent protection, module protection etc.) will be reset.
D11
Meaning
D12
Meaning
D13
Meaning
blink 1 time
compressor starts to run
blink 1 time
cooling
overload blink 1 time
quick cooling/heating
protection stop
heating
blink 2 times
blink 3 times
blink 4 times
blink 5 times
blink 6 times
blink 7 times
blink 8 times
exhaust protection stop
blink 2 times
blink 3 times
blink 4 times
blink 5 times
blink 6 times
blink 7 times
blink 8 times
overload blink 2 times
failure blink 3 times
defrosting
protection stop
communication
with indoor unit
closing down for NEC
driving module protection
closing down for
oil returning
communication failure with blink 4 times
NEC module
nominal
overcurrent protection
closing down for
cooling/heating
max. cooling/heating
communication failure with blink 5 times
computer
overloading protection
cooling antifreezing stop
failulre of outdoor ambient blink 6 times
temp.sensor
medial cooling/heating
min.cooling/heating
unit off
sensor malfunction stop
failure
tube-temp.sensor
failure of
of
outdoor blink 7 times
closing down for
outdoor blink 8 times
communication
gas-discharge
temp.sensor
failure(including indoor
unit and NEC driving
module)
blink 12 times
closing down for IPM
overheating protection
blink 9 times
communication
sent from indoor
failure blink 9 times
low pressure and can’t
resume
blink 10
times
wrong parameters sent to
NEC driver, unit closes
down
blink 11
times
IPM temp. sensor failure
D14
meaning
D15
meaning
D16
meaning
blink 1 time
frequency demultiplying
for high temp.of gas
discharged
blink 1 time
frequency limiting for high on
temp.of gas discharged
Be receiving or sending
computer data
blink 2 times
blink 3 times
blink 4 times
blink 5 times
frequency demultiplying
for overcurrent protection
frequency demultiplying
for cooling overload
frequency demultiplying
for heating overload
frequency demultiplying
for frost-proof
blink 2 times
blink 3 times
blink 4 times
blink 5 times
frequency
overcurrent protection
frequency limiting
cooling overloading
frequency limiting
heating overloading
limiting
of off
receiving or sending
computer data finished
for
for
frequency of current 9.4 A
lasting for 2 minutes
-13-
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D14
Meaning
D15
Meaning
blink 6 times
Unit closing down for
min.frequency
blink 6 times
frequency of current 12 A lasting for 2 minutes
blink 7 times
blink 8 times
Unit closing down for
PFC protection
blink 7 times
blink 8 times
blink 9 times
frequency limiting or demultiplying for rate of
frequency variation out of control
frequency limiting or demultiplying of compressor
current
Unit closing down for
compressor overloading
frequency limiting or demultiplying for over temp.of
IPM module
D17
Meaning
D18
when no short-circuit in
computer monitor port
short-circuit in
Meaning
blink 1 time
blink 2 times
blink 3 times
too low DC input voltage
too high DC voltage
AC current protection
On
off
receiving or sending indoor data
receiving or sending indoor data finished
normal communication between main borad and
driving board
blink
computer monitor port
blink 4 times
blink 5 times
IPM abnormality
not
abnormal communication between main board and
driving board
blink
reserved built-in PFC
protection
blink 6 times
blink 7 times
start-up failure
phase-losing or out of
control
blink 8 times
first PFC protection ;then
module protection
-14-
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Disassembly procedures
7
Disassembly procedures for indoor unit
Procedures and pictures
Disassembly front panel
(Refer to figure 7-1)
screw
electrical box top cover
filter
Disassemble filter
Push filter inside and pull it upward.Take the filter away
(Refer to 7-2)
hook
front panel
Disassemble guide louver
Bend the guide louver with strength and let out the hook
(Refer to figure 7-3)
hook
guide louver
-15-
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Disassemble front case
Unclench 3 screw covers;then unscrew 6 screws and lift
it backward.
(Refer to figure 7-4)
screws
Disassemble electrical box cover
Unscrew the srew fixing the display board and take the
board off.Hold the cover and press it to loosen the hook.
lift it upward and remove the box cover
(Refer to figure 7-5)
screws
hook
electrical box cover
display board
Disassemble electrical box
disassemble the grounding nut on evaporator;take away tube sensor
unplug the connecting terminal for indoor fan motor and stepping motor
Unscrew the screw fixing electrical box.Take out it.
tube sensor
(Refer to figure 7-6)
grounding nut
ambient sensor
-16-
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Disassemble water tray
Unloose the clasp fixing water tray;lift and disassemble it
(Refer to figure 7-7)
water tray
hook
Disassemble evaporator assy
Unscrew 2 screws on the clamp and remove the clamp
unscew the 2 screws fixing evaporator on left and right side.
Take out the evaporator by you hand and push it backward to let out
the side clasps from the groove.Take out the evaporator carefully
,-p,rotect the connecting pipe
(Refer to figure 7-8,7-9,7-10)
clasp
clamp
screws
screws
-17-
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Disassemble motor
Unscrew the screws fixing press plate and take out press plate
press plate
Unscrew the one M4 screws and remove the motor
motor
(Refer to 7-11)
screws
screws
cross flow fan
Disassemble cross flow fan
fan bearing
take out the bearing on the left and remove the cross flow fan
(Refer to 7-12)
-18-
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Disassembly procedures for outdoor unit
Operating procedures /pictures
Disassemble front side plate
front side plate
unsrew the 4 srews around the front side plate and take off it
(Refer to figure 7-13)
srews
Disassemble top cover
Unsrew the srews around the top voer plate;lift the
top cover and remove it
(Refer to figure 7-14)
srews
top cover
Disassemble rear grill
Unscrew the 4-self tapping screws on rear side plate
srews
and take off the grill.
rear grill
-19-
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Disassemble housing case
unsrew the screws around the housing case and take off it
screws
housing case
Disassemble electrical box
Screw out the 2 screws fixing the electrical box;
lift it and remove it.
(Refer to figure 7-17,7-18)
screws
cover of electrical box
Disassemble right side plate
unscrew the 7 srews in right side plate,condensor side plate and
valve support;lift right side plate and remove it.
(Refer to 7-19)
screws
screws
right side plate
-20-
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Operating procedures /pictures
Disassemble axial-flow fan
Loosen the nut with spanner and remove it.
nut
axial-flow fan
Disassemble motor and motor support
motor
Unscrew four tapping screws fixing the motor,and
remove the motor.Unscrew the two tapping screws fixing
the motor support,lift and remove it.
screws
cable
(Refer to figure 7-21)
motor support
screws
Disassemble 4-way valve
Unscrew the nut holding 4-way coil and remove the coil;
Use wet cotton cloth to wrap 4-way valve;unsodler 4 points
connecting 4-way valve and remove it.
4-way valve
Be quick during the process;try to make the cotton
wet all the time.Don't allow the flame to burn the
lead-out calbe of compressor
soldering points
Refer to figure 7-22)
-21-
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Operating procedures/pictures
Disassemblle capillary
Unsolder the joint points between capillary and other pipelines;them it
can be removed
capillary
(Refer to figure 7-23)
Disassemble valves
Unsrew the two screws fixing the big valve;unsoldering the soldering
points between the big valve and air-return duct;remove big valve
(When unsoldering,use wet cloth to wrap the big valve completely
to prevent it from being harmed by high temperature.
Unscrew the 2 screws fixing small valve;unsolder the joint points
between small valve and fork type pipe;remove small valve
(Refer to figure 7-24)
big valve
small valve
screws
Disassemble compressor
Unsolder the soldering points between the pipes and compressor;unscrew
the three nuts with washers at the foot of compressor;take out the compressor
(Refer to figure 7-25)
compressor
compressor nuts
Figure
-22-
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Exploded view and components&part list
8
indoor unit
KFHHP-22-ID
-23-
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Components and part list of indoor unit
Part Code
No
Description
Qty
KFHHP-22-ID
01252398
22202040
20182043
01473007
10512062
10512063
242520053
10512030
10582040
05232411
10352420
1
2
3
4
5
6
7
8
9
Wall-Mounting Frame
Rear Case
Water Tray
1
1
1
1
1
1
3
15
3
1
Rear Grill
Upper Air Deflector
Lower Guide Louver
Screw Cap
Air Louver
Swing Lever
10 Drain Pipe
11 Cross Flow Fan
1
O-Gasket of Cross Fan
Bearing
12
76512203
1
13 Evaporator Assy
14 Evaporator Left Support
15 Front Case Sub-Assy
16 Filter Sub-Assy
17 Remote Control
18 Front Panel
010041291
24212041
20002572
11122051
30510029
20002375
30046093
1
1
1
2
1
1
1
19 Receiver Board
Ambient Temperature
20
390000451
1
Sensor 15K
ꢀ
21 Wire Clamp
71010103
42011233
10582007
201022521
201022512
30039161
46010014
43110025
201022501
390000591
42020063
1
1
1
1
1
1
1
1
1
1
1
22 Terminal Board
23 Toggle Switch
24 Electric BoxCover
25 Electric BoxCover
26 Main PCB M9WA25A
27 Fuse T3.15AL 250V
28 Transformer 41X26.5F
29 Electric Box
30 Tube Sensor 20K
ꢀ
31 Sensor Insert
Lower Shield Cover for
32
01592048
1
Electric Box
33 Fixed Clip
34 Motor Fixed Clip
35 Fan Motor FN30C
02112009
26112069
150121071
1
1
1
Retaining Plate of
Evaporator
36
24212042
1
37 Sheet Metal Piece
38 Stepping Motor MP24GA
02123005
15212102
1
1
Upper Shield Cover for
Electric Box
40 Pipe Clamp
39
01592033
26112071
1
1
-24-
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Exploded view of outdoor unit
KFHHP-22-OD
-25-
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Components and part list of outdoor unit
Part Code
KFHHP-22-OD
01473001
01433011
26235401
01233039
10335253
15013704
01703087
01103813
24213005
01255262
01475252
43120011
01403591
24213008
30111018
01403629
30039165
26153031
24213010
24213009
30039164
30039163
3900028001
42020063
42020066
33010027
42010255
43130008
71010102
70410523
71010003
76514004
49013011
03103391
07130209
43000411
4300040022
07103030
01302005
00103501
01203560
01302007
06813401
No Description
Qty
1
2
3
4
5
6
7
8
9
Front Grill
Housing
Small Handle
Clapboard Assy
Axial Flow Fan
Fan Motor FW60H
Motor Support Sub-Assy
Condenser Assy
Temp Sensor Support
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
8
8
1
1
1
1
1
1
1
1
1
1
1
1
5
1
1
1
1
1
1
1
1
1
1
1
10 Top Cover
11 Rear Grill
12 Reactor
13 Electric BoxAssy
14 Module Support
15 PCB JGP011
16 Electric BoxCover Sub-Assy
17 Main PCB 2 W9W2
18 PCB Support up
19 PCB Support down
20 PCB Support
ꢀ
ꢀ
21 Main PCB 1 W9W2
22 Filtering Board W9W2
23 Temperature Sensor
24 Sensor Insert
25 Sensor Insert
26 Capacitor
27 Terminal Board
28 Filter
29 Wire Clamp
30 Isolation Washer
31 Wire Clamp
32 Cable-Cross Loop
33 Radiator
34 CapillarySub-Assy
35 Cut-off Valve
36 4-wayValve
37 4-wayValve Fittings
38 Gas Valve Sub-Assy
39 Rear Side Plate Sub-Assy
40 Compressor
41 Underpan Assy
42 Front Side Plate
43 Choke Plug
-26-
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Troubleshooting
9
Analysis in this section is used for D.C. Variable Frequency Series. Before analysis, you can diagnose
according to the code displayed on indoor unit or indicator display on outdoor unit. (Refer to Malfunction
display section).
Measure the insulating resistance
When the breaker is set ON, it will
trip at once
for grounding to confirm whether
there is electrical leakage or short
circuit in the unit
Breaker tripped
or fuse burnt out
Insulation malfunction of line or componen
in the air conditioner. Insulation breakdow
occurs after radiation, which causes shor
circuit or electricity leakage. Measure
insulating resistance or use one-by-on
elimination method;
When the unit is turned on, the
breaker will trip in a few minutes
Malfunction of fuse. Replace it.
No power supply
Check power supply circuit
Air
conditioner
Check and plug well plug, make
The power plug is not or poorly
connected
does not response
after powered on.
(The buzzer does
not sound after the
plug is connected
and the unit does
not response after
Air
conditi
oner
cannot
start up
Controller fuse is burnt out
Change control fuse
the
remote
Secure the wire connection: measure
the output voltage of the transformer
and replace it if the value is wrong
Loose or poor contact of transformer
connection, or transformer malfunction
controller is used
to turn it on)
Replace the controller
Change battery
The controller is broken
Batteries of remote controller are low
Remote
controller does
not receive signal
(When powered
on, the buzzer
will send out a
sound, unless it is
broken)
Malfunction of remote controller
First press the "AUTO" button of the
manual switch. If there is no response,
check according to the above method;
if it is normal after the button is
pressed, check if the installation
location and wire connection of the
receiving head are correct. If correct,
replace the receiving head, or the
remote controller.
Loose or poor connection of receiving
head
Receiving head is broken
-27-
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Abnormal power supply of outdoor unit
Check the circuit according to circuit diagram
When unit is
cooling or
heating, both
compressor and
outdoor fan don't
run
Damage of outdoor main control board
Breakage of outdoor power module
Improper setting of temperature
Replace the main control board
Replace the power module
Adjust the set temperature
Breakage of outdoor fan motor
Replace the fan motor
When unit is
cooling or
heating, the
compressor runs
but outdoor fan
doesn't run
Wrong wire connection
Wire according to the circuit diagram
Replace the main control board
Replace the fan capacitor
Breakage of outdoor main control board
Breakage of outdoor fan capacitor
Malfunction of compressor
Replace the compressor
Re-fasten the connection
Poor contact of connection between the
main control board and module
When cooling or
heating, outdoor
fan runs, but
compressor
Abnormal input of power module
Abnormal output of power module
Check if input is 320V. If not, replace the
rectifier
doesn't run.
Replace the power module
Compressor temperature is too high
Wrong wiring
Cool the compressor for 30 min before running
Wire according to the circuit diagram
When cooling or
heating, outdoor
fan runs, but
compressor
doesn't run.
Damage of outdoor main control board
Replace the outdoor main control board
Burn-out or broken wire of indoor fan
motor
Repair or change the fan motor
Fan doesn't run
when FAN mode
is set
Wire according to the circuit diagram
Replace the indoor main control board
Wrong wiring
Circuit break or damage of fan motor
capacitor
-28
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Adjust the set temperature
Improper setting of temperature
Check the estimated load of cooling (heating)
Whether cooling (heating) load
is proper
Vacuumize after leakage detection
Leakage or shortage of refrigerant
and leakage repair. Charge refrigerant
according to specification.
Leakage occurs between high and
low pressure inside compressor
Replace the compressor
Replace the four-way valve
Replace the capillary
Malfunction of
refrigerant flow
Malfunction of four-way valve
Partial blockage of capillary
Use the method of observing condensation
on the evaporator and pressure value of
high pressure manometer to see whether
the system is blocked and carry out
corresponding handling on the system
Blockage of cooling system
Ensure that both thick pipe and thin pipe are insulated
well. The exposed part of the connector and copper pipe
Poor thermal insulation of connecting
pipe of indoor and outdoor unit
Heat exchanger of outdoor unit
Clean the dust accumulated on the
Air filters are blocked
Clean the filter
Set the fan speed to high or medium
Fan speed is set too slow
Fan speed turns low
Air circulation
is insufficient
Damage of
capacitor
damaged
Replace
capacitor
the
Damage of
motor
Replace the motor
Improper installation location
for outdoor unit
Outdoor unit should be installed in a
place with well ventilation
Flashing or awning can be installed appropriately. If the
max. cooling capacity cannot be satisfied, replacement of
the air conditioner is recommended.
Outdoor temperature is too high
Indoor sealability is inadequate; too many
people go in and out frequently; there is
heating unit in the room.
Maintain a certain degree of indoor sealability. Try not to
use appliance with high amount of heat.
29
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drain hose is blocked or broken
replace the drain hose
wrap and tight it again
water leakage
connector of refrigerant pipe isn't wrapped well
indoor fan collides with other parts
abnormal things in indoor unit
adjust the location of fan
remove it
compresoor shakes overly
pipes in outdoor unit collides
adjust the washer and tight the bolt
set the pipes apart
abnormal shake
or sound
tighten the connecting bolt
metal plates collides
stick shake-reduction plaster between the metal plates
adjust the fan location
outdoor fan collides with case
abnormal sound inside compressor
replace compressor
abnormal electromagnetic sound in
4-way valve in HEAT mode
short circuit inside electromagnetic valve;repalace it
CAUTION:
1,When repairing,before the voltage between module PN is measured below 50V,do not touch any terminal
to avoid electrical shock
2,When replacing power module and rectifier,make sure to spread the indicating paste evenly
-30-
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9.2 Malfunction display section
Analysis or handling of some malfunction display:
1, Compressor discharge protection:
Possible reasons: shortage of refrigerant; block of air filter; poor ventilation or air flow short pass
in condenser; system has noncondensing gas(ge. Water, air);blockage of capillary (including
filter); leakage inside 4-way valve causes incorrect operations; malfunction of compressor;
malfunction of protection delay; malfunction of gas discharge sensor; too high outdoor temperature.
Handling process: refer to the malfunction analysis in the above section
2, low voltage overcurrent protection:
Possible reasons: sudden drop of power supply or overloading
3, Communication malfunction:
Handling method: check if communication signal cable is connected reliably
4, temp sensor open or short circuit:
Handling method: check whether sensor is normal, connected with the corresponding position on
the controller and if damage of lead wire is found
5, compressor overload protection:
Possible reasons: insufficient or too much refrigerant; blockage of capillary and increase of
suction temp.; improper running of compressor, burning in or stuck of bearing, damage of discharge
valve; malfunction of protector.
Handling method: adjust refrigerant amount; replace the capillary; replace the compressor; use
universal meter to check if the contactor of compressor is fine when it is not overheat, if not replace
the contactor.
6, system malfunction:
i.e overload protection. When tube temperaturec (Checking the temperature of outdoor heat
exchanger when cooling and checking temperature of indoor heat exchanger when heating) is too
high, protection will be activated.
Possible reasons: outdoor temperature is too high when cooling; insuffient outdoor air circulation;
refrigerant flow malfunction.
7, IPM module protection:
Handing method: if module malfunctions and can not be restored for long time, please
disconnect power supply. And connect again after about 10 minutes later. If repeating this method
for several times and malfunction still exist, please replace the module.
8, PFC protection:
Possible reasons: outdoor temperature is too high; over-high temperature of PFC module; power
of whole unit is too high and current is too high; low vollage in PFC; bad contact between the cables
in PFC control board.
Handing method: If PFC protection happens, please check connecting cables of PFC board first.
If the whole unit can not operate normally and PFC protection happens all the time, please replace
PFC.
9, refrigerant charging:
Similar with the procedures of the over 5kw wall split models.
Notice: refrigerant charging can only be started after whole unit has been operating stably for about
10 minutes.
-31-
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7. Module protection :
Handling method:
Check if the voltage between power module P and N is too low and
if the current is too high. In normal condition, voltage between P and
N should be about 320V.
Abnormal
Check power supply circuit of outdoor unit (if PTC resistance
rectifying bridge, reactor, capacitance etc. is ok).
Normal
Check if radiating paste is spread
evenly or radiating sticker is stuck
well; if screws of power module
is tightened
Reinstall power module and
re-spread radiating paste or
stick radiating sticker on the
radiator of power module.
Temperature of power module is too high,
which causes overheating protection
Protection is still displayed
Poor radiation, heat exchanger
is dirty
Remove obstructions
Confirm the setting status of outdoor unit (cooling)
Normal
and clean
Confirm if outdoor fan motor is running; unplug the
three connecting wires between U, V, W of compressor
and power module. Turn on the unit to see if outdoor
fan runs normally (about 1 minute)
Confirm if there is voltage output and balance of
voltage between any two phases of U, V and W.
Outdoor fan runs
Outdoor fan stops
No
Yes
Measure the voltage of outdoor
fan connector
Whether module type
is correct
Replacethepowermodule
Abnormal
Normal
No voltage
Normal voltage
Measure the three-phase
resistance of compressor
Replace the module
with correct type
Replacethemainboard
of outdoor unit
Replace the fan
motor
Abnormal
Normal
Replace the
compressor
Whether cylinder of
compressor is stuck
If the unit runs normally after connected
with the new compressor for trial run, the
cylinder of original compressor is stuck
32
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