Trouble Shooting
All Models
Redring
SB Professional
On Wall Boiling Water Heater
Models:
1070800E
1070810E
1070815E
1070820E
1070825E
1070830E
1070835E
2.5 ltr
5 ltr
7.5 ltr
10 ltr
15 ltr
20 ltr
25 ltr
Page 1 of 8
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Spare parts and diagrams for location and installation dimensions.
Spare Parts
9b
10
1311056
1311082
1311048
Tap Assembly
Ref
Part No
Description
Sensor (minimum water level)
1
2
1311010
1311044
Water Solenoid Valve
Condenser Assembly
Cold Water Inlet To Tank
Thermistor Steam Sensor
Element & Tank Assembly
Element Assembly 5 to 25 Litre
11
12
Probe (maximum water level)
Steam Vent Outlet
3
4
1311043
13
14
Maximum Water Level
5a
5b
1310842
Power Cord & Plug Assembly
Control Board Assembly (2.5 Litre)
Control Board Assembly (5 to 25 Litre)
Tap Cup Seal
1311032
1311006
15a 1311045
15b 1311042
6
Manual Rest Thermostat (boil dry protection)
Steam Vent Outlet (half inch BSP)
7
16
17
18
1311058
1311060
1310732
8
1311022
Auto Reset Thermostat (steam vent overflow)
Water Outlet Fitting (half inch BSP)
Tap Insert
Tap Spring
9a
Reducer 1/2”
BSP
(Olive Compression Union)
12
2
1
11
7
4
13
65mm
45mm
5a
30mm
85mm
FRONT VIEW
55mm
10
SIDE VIEW
9a
5b
6
18
9b
17
15a & 15b
1
3
Teflon Tape
16
8
7
14
W
3
0
W
B
4
.
8
A
B
A
4
.
2
.
4
.
A
A
4
3
9
4
4
F
F
1
9
0
1
9
Wall Mounting Dimmensions (mm)
2.5L
5-75L
10-15L
20-25L
A
B
56.4
41.4
41.4
41.4
198.0
278.0
335.0
399.0
C
D
418.45
42.45
488.45
42.45
545.45
42.45
609.45
42.45
H
C
H
E
F
143.4
143.4
143.4
143.4
200
C
H
430.8
310.8
500.8
360.8
557.8
417.8
621.8
481.8
W
D
D
E
1
.
E
1
3
20-25L
2.5- 15L
Page 3 of 8
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Problem Solving
Symtom
Solution
Unit filling to low level but not heating
1. Possible faulty PCB
2. Check Element
3. Check all wiring connections
Unit not filling
1. Check top probe (No.11 page 3) and ensure that the
probe is not in contact with tubing. Also check for
scale build up.
2. Check solenoid valve (No.1 page 3) with multimeter
set to K Ohms scale, it should read between
3.9 - 4.2.
3. Check water supply.
4. Turn pwer supply on then off to see if you can hear
the “squirt” of water from the solenoid valve.
Unit continually boiling
1. Replace thermistor steam sensor (No.4 page 3)
2. If above does not solve problem, replace PCB
(No.15a or 15b page 3).
3. Check the thermistor is positioned correctly.
Manual reset thermostat
(Unscrew)
1. Check water supply to tank.
2. Check element.
(Element boil dry protection)
3. Replace manual reset.
Tap leaking
1. Replace tap cup seal (No.15 page 3)
2. Replace tap assy (No.9 page 3). Re-tape with teflon.
Unit slow in “Heat/Fill” cycle
1. Water transfer hole in the cold water supply tube
may be blocked. Check and clear blockage.
( the hole is positioned above the thermistor sensing
probe, linking the cold supply and condensor tubes)
NOTE: Ensure all Earth connections are secure, failure to do so will cause the unit to operate irratically
Page 4 of 8
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Tank access and replacing parts
Task
Operation
Front cover removal
1. Turn power and water off
2. Drain unit via tap, be carefull of boiling water.
3. Remove the tap assy by unscrewing
counter-clockwise
4. Undo self-tapping screws, 2 at top and 2 at bottom
of case. Remove the cover by drawing towards you.
Replace Solenoid
1. Directions as above in Cover Removal.
2. Disconnect wires to valve.
3. Disconnect the water fitting attached to valve.
4. Unscrew securing screws fixing valve. Remove old
valve and replace with new valve.
5. Re-connect fitting, turn on water and check for leaks.
6. Refit case and return to operation.
Replace Element
1. Directions as above in Cover Removal.
2. Disconnect element wiring.
3. Disconnect wiring from the manual re-set thermostat
and remove by unscrewing.
4. Remove the panel at the top of the tank, then the 3
nuts securing the element, 2 at the bottom and 1 on
the side of tank.
5. Remove the element through the top opening.
6. Replacement is the reverse procedure.
7. Refit case and return to operation.
NOTE: After replacing the element the top panel must
be re- sealed to ensure water tight operation.
Replace Tap assembly
Replace Manual Re-Set Thermostat
Replace PCB.
1. Directions as above in Cover Removal. Steps 1-3.
2. Re-fit the new tap assembly.
3. Ensure new thread seal tape is applied.
1. Directions as above in Cover Removal.
2. Remove the connecting wires, unscrew the cutout.
3. Replacement is the reverse procedure.
1. Directions as above in Cover Removal.
2. Disconnect connecting wires and unscrew PCB.
3. Replacement is the reverse procedure.
4. Refit case and return to operation.
NOTE: PCB wiring is colour coded please ensure that
the wires go back onto the same connection terminals.
All connections are 240 volt, take great care.
The temperature is non-adjustable.
PCB No.181801 is for 2.5 ltr.
PCB No.181815 is for 5ltr and larger.
Page 5 of 8
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Tank access and replacing parts
con’t.
Task
Operation
Replace Thermistor Steam Sensor
1. Directions as above in Cover Removal.
2. Remove PCB cover plate.
3. Remove the thermistor.
4. The probe end of the thermistor pushes into the
condensor tube so that the tip just covers the hole
drilled in the condensor tube.
5. Re-connect the sensor to the PCB at either NTC 1 or
NTC 2, in any order.
Condensor Tube
Sensor Probe
Page 6 of 8
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Notes
Page 7 of 8
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Applied Energy Products Ltd,
Morley Way, Peterborough. PE2 9JJ. England
General enquiry
Technical Hotline
Sales/Spares
Tel
Fax
Tel
+44 (0) 1733 456789
+44 (0) 1733 310606
+44 (0) 8709 000430
+44 (0) 8709 000530
+44 (0) 8709 000420
+44 (0) 8709 000520
Fax
Tel
Fax
Page 8 of 8
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