Rinnai RHFE-431WTA - Manual (Page 42)

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ERROR MESSAGES
In all cases, you may be able to clear the Error Message simply by turning the heater OFF, then ON again.
If the Error Message still remains or returns on the next operation, contact Rinnai or your nearest service
agent and arrange for a service call.
The Energysaver 431 has the ability to check its own operation continuously. If a fault occurs, an Error Message
will flash on the Digital Display of the control panel. This assists with diagnosing the fault, and may enable you to
overcome a problem without a service call. Please quote the code displayed when inquiring about service.
CODE DISPLAYED FAULT REMEDY
Ignition failure
Flame failure
Overheat
Room overheat
Room Temperature
Sensor faulty
Overheat Temperature
Sensor faulty
Sparker failure
Combustion fan failure
Faulty ON/OFF switch
Faulty solenoids
Faulty Flame Rod
Communication Error
Check gas is turned ON.
Service call if repeated.
Check gas is turned ON.
Service call if repeated.
Clean filter
Service call if repeated.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Turn heater OFF,
then ON again.
Lower room temperature
to less than 40 °C(104°F).
11
12
14
16
31
32
33
34
53
61
70
71
72
73
99 Flue block Check around flue terminal