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Rinnai Australia 20 Operation Manual
TROUBLESHOOTING
• Your Rinnai Continuous Flow water heaters has a self diagnostic capability. If a fault occurs, an
Error Code will flash on the digital monitor or status monitor* if you have water controllers. This
assists with diagnosing the fault, and may enable you to overcome a problem without a service call.
Please quote the code displayed when enquiring about service. *All models in the range covered by
this manual have a “Status Monitor”, except B16, B20 & B26.
In all cases, you may be able to clear the Error Code simply by turning the hot water tap OFF, then ON again. If this does not clear the Error Code,
try pushing the On/Off button OFF, then ON again. If the Error Code still remains, contact Rinnai for advice.
Troubleshooting Without Water Controllers
If you have no water controllers and experience the following symptoms, carry out these suggestions.
If the symptom continues, contact Rinnai for advice.
ERROR FAULT REMEDY
-
Noticeable reduction in water flow. Inlet water filter needs to be cleaned. Service call.
03
Power interruption during Bath fill
(Water will not flow on power reinstatement).
Turn off all hot water taps. Press On/Off twice.
10 Air intake or flue blocked. Service Call.
11 No ignition / No gas supply.
Check gas is turned on at water heater and gas meter
or cylinder.
12 Flame Failure / Low gas flow.
Check gas is turned on at water heater
and gas meter or cylinder.
Check there are no obstructions to the flue outlet.
14 Remaining Flame Safety Device. Service Call.
16 Over Temperature Warning. Service Call.
25 Condensate Pipe Blockage Check for blockage on condensate drain path.
32 Outgoing Water Temperature Sensor Faulty. Service Call.
33 Heat Exchanger Outlet Sensor Faulty. Service Call.
34 Combustion Air Temperature Sensor Faulty. Service Call.
52 Gas Modulating Valve Faulty. Service Call.
61 Combustion Fan Failure. Service Call.
65
Water Flow Control Faulty
(Does not stop flow properly).
Service Call.
71 Micro-processor Failure. Service Call.
72 Micro-processor Failure. Service Call.
LC Scale build-up inside the heat exchanger. Service Call.
FAULT REMEDY
The unit does not attempt to start at all.
Check the power is on at the unit.
Check the isolation valves at the unit are open.
The unit starts then shuts down immediately.
Check the power is still on.
Check the gas isolation valves at the
unit and the gas meter are fully open.
Open your hot water tap fully.
The unit starts then the water goes cold.
Check the power is still on.
Open your hot water tap further.
Faults caused by insufficient gas supply, insufficient water supply, gas quality,
water quality, installation errors or operation errors are not covered by the Rinnai
warranty. Refer to separate warranty booklet for details.
NOTE
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