Rinnai RHFE-431FA - Manual (Page 35)

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PRE-SERVICE CHECK
Before asking for a service call please check the following points.
These points are part of the normal operation of the unit.
■ At Ignition:
Heater does not operate.
Warm air does not flow when the burner
lights.
Smoke or strange smells are produced
on the first trial light up after installation.
Sharp clicking noises at ignition, or when
unit cuts down on the thermostat, or goes
out.
■ During Combustion:
Clunking noise when the thermostat
operates.
Unit is not heating room.
Air filter is blocked or the louvers are
blocked or obstructed.
Heater will not re-ignite after overheating.
■ When the unit is turned off.
Convection fan continues to run after
turning OFF.
■ Other Points:
Steam is discharged from the flue terminal.
Unit cuts off without apparent reason.
Power Failure.
Is the heater plugged in?
Have the fuses or breaker blown at the switch board?
Is there a power failure?
Is the air filter blocked?
Is anything blocking the outlet for the hot air?
Is the flue blocked?
The fan is started automatically after a short delay.
This is to allow the heat exchanger to warm up, helping to avoid cold draughts.
This is caused by grease or oil and dust on the heat exchanger and will stop
after a short time.
This is simply expansion noise from the heat exchanger.
This is the sound of the solenoid gas valves opening and closing.
Is the air filter blocked?
Is the set temperature high enough?
Is the warm air outlet blocked by anything?
Are the doors and windows of the room closed?
Allow heater to cool, clean air filter, operate again.
Even after unit has cooled down the heater does not ignite again. Repair is
necessary.
Contact your local agent or Rinnai for a Service call.
This is to remove the residual heat from the heat exchanger, the fan will stop
when the heater cools down.
High efficiency appliances tend to discharge water vapor on cold days, this is
normal.
Check whether filters are blocked, dirty filters will cause the heater of overheat.
Switch OFF, then ON again when power is restored to re-set controls.