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Water flow
control device
error. Water
flow is not
65
controlled.
Water
temperature
too low.
Solenoid
valve circuit
71
error. Unit
does not
operate.
Flame rod
circuit error.
72
Unit does not
operate.
Appliance
does not
operate at all.
No display on
the remote
controllers (if
fitted).
-
No
combustion
despite
remote
control
indicating that
combustion is
occuring - if
remote
-
controller(s)
fitted)
Combustion
stops during
operation.
-
Cannot adjust
the hot water
temperature
via the
controller(s) -
-
only if
controller(s)
fitted.
Anti-frost
heater does
-
not operate.
Infinity REU-3203W
19
Check water flow servo
19
Check gas valves
19
Check flame rod
-
1. Check power cord
plugged in and supply
turned on.
2. Check power supply
voltage.
3. Check electrical fuse.
4. Check transformer.
5. Check gas valves
6. Check sparker unit.
7. Check earth leads and
connections.
8. Check for short
circuits.
9. Check remote
controller(s) - if fitted.
-
1. Check water flow
sensor.
2. Check flame rod.
3. Check heat exchanger
outlet thermistor.
4. Check hot water outlet
thermistor.
5. Check combustion fan.
6. Check the sparker unit.
7. Check gas valves.
8. Check thermal fuse.
9. Check overheat switch.
IMPORTANT - If thermal fuse or overheat switch were faulty:
a) check heater for damage;
b) confirm "Gas Type" and "Combustion" dip switch settings;
c) confirm test point pressure.
-
1. Check gas supply
2. Check flame rod
3. Check earth leads and
connections.
-
1. Check hot water outlet
thermistor.
2. Check heat exchanger
outlet thermistor.
3. Check gas valves
4. Check water flow
servo.
5. Check bypass servo.
-
1. Check anti-frost heater
components
2. Check frost sensing
switch
9
3
3
8 and or 9
4
8
12
13
14
7
3. a) - 3. d)
8 and or 9
2
4
5
16
8
3
4
??
10
6
11
6
1
5
2
4
3. a) - 3. d)
8 and or 9
6
11
7
11
4
8
5
11
6
11
6
3. a) - 3. d)
8 and or 9
9
3
15
3
16
17
- 23 -
B
07
2
F
, I
, I
,
3
1
2
I
, I
3
4
A
1
J7
J7
A
, A, D
2
F
, I
, I
,
3
1
2
I
, I
3
4
J
6
J
, PCB
7
and power
supply lead
H
06
1
E
3
A
1
E
11
2
E
02
1
C
5 and 9
1
J
6
F
, I
, I
,
3
1
2
I
, I
3
4
F
1
F
2
A
1
J
, PCB
7
and power
supply lead
E
02
1
E
02
1
F
, I
, I
,
3
1
2
I
, I
3
4
B
07
2
B
12
1
J
, J
, J
, J
, J
1
3
4
5
8
J
2
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