Rinnai HD200E REU-V2632WC, Service Manual

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Infinity REU-V2626W / HD200E REU-V2632WC - 25 - Issue 1 - 10/10/03 ©Rinnai
Fault Finding Table
Code on Controller Fault Table Action
03
Power interruption during Bathfill. Water will not flow
when power restored. 1. Turn off all hot water taps.
1. Press the ON/OFF button on a controller twice.
10
Combustion fan current too high. Unit operates, then
stops.
F
1. Check blockage of air intake/flue outlet.
2. Check combustion fan.
11
No ignition. Unit stops without flame igniting
C
1. Check gas supply
2. Check sparker unit
3. Check gas valves
12
Flame Failure / Earth Leakage 1. Check gas supply
2. Check flame rod
3. Check earth wire lead
4. Check remote control
14
Thermal fuse and/or overheat switch activated. Unit
operates, then stops. 1. Check thermal fuse
2. 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
(page 22).
c. Confirm test point pressures (page 36).
16
Over temperature warning. Unit operates, then stops. 1. Confirm “Gas Type” and “Combustion” dip switch settings
(page 22)
2. Confirm test point pressure (page 36)
C 3. Check gas valves
D
4. Check water flow sensor
B
5. Check water flow servo
A
6. Check heat exchanger outlet temperature thermistor
7. Check hot water outlet temperature thermistor
32
Outlet water thermistor flow
A
Check hot water outlet thermistor
33
Heat exchanger thermistor error
A
Check heat exchanger thermistor
52
Modulating solenoid valve fault. Unit stops without
flame ignition.
C
Check modulating solenoid valve
61
Combustion fan rotation error F Check combustion fan
65
Water flow control device error. Water flow is not
controlled. Water temperature too low. B Check water flow servo
71
Solenoid valve circuit error. Unit does not operate.
C
Check gas valves
72
Flame rod circuit error. Unit does not operate. Check flame rod
-
Appliance does not operate at all. No display on the
remote controllers (if fitted). 1. Check power cord plugged in and supply turned on.
2. Check power supply voltage.
3. Check electrical fuse.
4. Check transformer.
C
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.
-
No combustion despite remote control indicating that
combustion is occuring - if remote controller(s) fitted) D 1. Check water flow sensor.
2. Check flame rod.
A 3. Check heat exchanger outlet thermistor.
4. Check hot water outlet thermistor.
F
5. Check combustion fan.
6. Check the sparker unit.
C
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.
-
Combustion stops during operation. 1. Check gas supply
2. Check flame rod
3. Check earth leads and connections.
-
Cannot adjust the hot water temperature via the
controller(s) - only if controller(s) fitted. A 1. Check hot water outlet thermistor.
2. Check heat exchanger outlet thermistor.
C
3. Check gas valves
B
4. Check water flow servo.
E
5. Check bypass servo. (REU-V2632WC only)
-
Anti-frost heater does not operate. G 1. Check anti-frost heater components
2. Check frost sensing switch