14
Trouble Shooting
Rinnai products are all equipped with a self-diagnosis system: in case of failure, an error code appears on the control
code before making the maintenance request.
To cancel the error code and to restore the normal operation of the appliance, it is necessary to stop the hot water
withdrawal by closing all the taps for a few seconds. If this procedure does not solve your problem, press the ‘On/
remains, it is necessary to contact an authorized Rinnai technician.
Error codes
Code Description Remedy
-
03
10 Service call.
11 No ignition / No gas supply.
Check gas is turned on at water heater and gas meter
or cylinder.
12
Check gas is turned on at water heater and gas meter
outlet.
14
Service call.
16 Over temperature warning. Service call.
19 Electrical earth check fault. Service call.
21 Incorrect dip-switch setting detected Installer to check dip-switch settings / Service call.
32 Outgoing water temperature sensor fault. Service call.
33
Heat exchanger outgoing water temperature
sensor fault
Service call.
34 Indoor temperature sensor fault. Service call.
41 Ambient temperature sensor fault. Service call.
52 Gas modulating valve fault. Service call.
61 Combustion fan fault. Service call.
65
Service call.
70 Microprocessor fault. Service call.
71 Microprocessor fault. Service call.
72 Flame sensing device fault. Service call.
LC#
(LC0,
LC1,
LC2,
...)
Scale build-up in heat exchanger (when
checking maintenance code history, “00” is
substituted for “LC”)
scale build up in the heat exchanger and that the heat
Hard water must be treated to prevent scale build up
or damage to the heat exchanger.
To operate the water heater temporarily until the heat
the temperature controller 5 times.
Repeated LC codes will eventually lockout the water
heater.
Please call Rinnai technical department.
Enfocus Software - Customer Support
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