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ERROR MESSAGES
Rinnai water heaters have the ability to check their own operation continuously. If a fault
occurs, an error code will flash on the Digital Display if you have temperature controllers
installed. 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.
* In all cases, you may be able to clear the Error code by turning the hot water tap OFF, then ON
again. If this does not clear the error, try pushing the On/Off button OFF then ON again. If the Error
Code still remains contact Rinnai or your nearest service agent for advice.
** Faults caused by insufficient gas/water supply or gas/water quality and installation errors are not
covered by the manufacturer’s guarantee.
Code
Displayed
Fault Remedy
- Noticeable reduction in water
flow
Inlet water filter needs to be cleaned.
03
Power interruption during
operation
(water will not flow when power
returned)
Turn off all hot water taps and
circulating pumps.
Press ‘On/Off’ twice
10
Not enough combustion air Check for physical blockages around
air intake or exhaust. Check
combustion fan.
11
No Ignition / Gas supply Check gas valves, gas supply and
ignition unit.
12
Flame failure / Earth Leakage Check gas valves and gas supply.
Check flame rod.
Check earth wire lead.
Check remote control.
14
High flame safety device Service Call
16
Over temperature warning Service Call
32
Outgoing water temperature
sensor faulty
Service Call
33
Heat exchanger outlet 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
Flame rod circuit error Service Call
34
Combustion Air Temperature
Sensor Faulty
Service Call