Fault Codes

If there is a malfunction the appliance may shut down

as a safety precaution and display a fault code to

assist in diagnosing the problem. The fault code will

flash in the display on the control panel. When

making a service call, this code will assist with

diagnosing the fault.

You may be able to clear the fault code by turning the

heater off and then on again. If the fault code remains

or returns on the next operation, contact Rinnai or

your nearest service agent and arrange for a service

call.

Rinnai Corporation RHFE-263FA 13
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. [1]
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 104°F(40°C).
Flue block Check around flue terminal [2]
11
12
14
16
31
32
33
34
53
61
70
71
72
73
49
99
Sensor breakdown Service Call.

[1] Remove any obstructions. The flue needs to be kept clear to expel exhaust gases. If the appliance fails to

operate contact a qualified service agency.

[2] If the fusible link needs replacement, it must be done by a qualified service agency. In addition, the cause of

the overheat needs to be determined. The fusible link is a one use safety device that breaks to shut off the

appliance.