Rinnai REU-V1616WF, Service Manual

Page: 28 / 55

Infinity REU-V1616WF - 23 - Issue 1 - 21/11/03 ©Rinnai
Fault Finding Table
Code on
Controller Fault Action
02
Combustion time out (activated after 60 minutes of continuous use to ensure
that the room does not run out of oxygen). Reset the appliance by turning the water heater off at the power
point, leave the unit off for 10 seconds and then turn the power
back on.
03
Power interruption during Bathfill. Water will not flow when power
restored. 1. Turn off all hot water taps.
2. Press the ON/OFF button on a controller twice.
10
Combustion fan current too high. Unit operates, then stops. 1. Check blockage of air intake/flue outlet.
2. Check combustion fan.
11
No ignition. Unit stops without flame igniting 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 21).
c. Confirm test point pressures (page 24).
16
Over temperature warning. Unit operates, then stops.
1. Confirm “Gas Type” and “Combustion” dip switch settings
(page 21)
2. Confirm test point pressure (page 24)
3. Check gas valves
4. Check water flow sensor
5. Check water flow servo
6. Check heat exchanger outlet temperature thermistor
7. Check hot water outlet temperature thermistor
32 Outlet water thermistor flow Check hot water outlet thermistor
52 Modulating solenoid valve fault. Unit stops without flame ignition. Check modulating solenoid valve
61 Combustion fan rotation error Check combustion fan
71 Solenoid valve circuit error. Unit does not operate. 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.
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)
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.
-
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.
1. Check hot water outlet thermistor.
2. Check heat exchanger outlet thermistor.
3. Check gas valves
4. Check water flow servo.
-
Anti-frost heater does not operate.
1. Check anti-frost heater components
2. Check frost sensing switch