Before Making a Service Call
Before making a service call please check the following:
At Ignition:
Heater does not operate.
Is the heater plugged in?
Have the fuses or breaker blown at the fuse box / breaker panel? Is there a power failure?
Is the air filter blocked?
Is anything blocking the outlet for the hot air? Is the flue blocked?
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
During Combustion:
Clicking noise when the thermostat operates.
Unit is not heating room.
Air filter is blocked or the louvers are blocked or obstructed.
Heater will not
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?
Was the appliance correctly sized for the space?
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 a qualified / authorized service provider.
When the unit is turned off.
Convection fan continues to run after turning OFF.
This is to remove the residual heat from the heat exchanger. The fan will stop when the heater cools down.
Other Points:
Steam is discharged from the flue terminal .
High efficiency appliances tend to discharge water vapor on cold days. This is normal.
Unit shuts off without apparent reason.
Check whether filters are blocked. Dirty filters will cause the heater to overheat.
12 | Rinnai Corporation EX17C / EX22C Manual |