Troubleshooting - Rinnai Infinity EF 24 Operation Manual

Troubleshooting with controllers
With controllers or status monitor
Your Rinnai continuous flow water heater has a self diagnostic capability. If a fault occurs, an error code will flash
on the digital monitor (if you have water controllers) or status monitor (selected models only). This assists with
diagnosing the fault and may enable you to overcome a problem without a service call. Please quote the code
displayed when contacting Rinnai.
Common Fault
error codes
- Noticeable reduction in water flow
03 Power interruption during bath fill, water
will not flow when power is back on
10 Air intake or flue blocked
11 No ignition, no gas supply
12 Flame failure, low gas flow
14 Overheat thermal fuse
16 Over temperature warning
25 Condensate trap error
32 Outgoing water temperature sensor faulty
33 Heat exchanger outlet sensor faulty
34 Air temperature sensor faulty (internal
models only)
52 Gas modulating valve faulty
61 Combustion fan failure
65 Water flow control faulty—does not stop
flow properly
71 Microprocessor failure
72 Microprocessor failure
LC Scale build-up in heat exchanger—when
checking maintenance code history, 00 is
substituted for LC
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 code, try pushing the On/Off button Off, then On again. If the error code remains, contact Rinnai
for advice.
Possible solution
Inlet water filter needs to be cleaned—service
call.
Turn off all hot water taps and press On/Off
twice.
Service call.
Check gas is turned on at water heater and gas
meter, or cylinder.
Check gas is turned on at the water heater
and gas meter or cylinder. Check there are no
obstructions to the flue outlet.
Service call.
Service call.
Check condensate drain for blockage.
Service call.
Service call.
Service call. Will require; checking sensor wiring
for damage, measuring resistance of sensor,
checking combustion fan, checking internal
flue leakage, checking flue system integrity, and
possibly replacing sensor.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Continuous Flow Water Heater Operation Guide 04-12 | 15