Aprilaire 500 Humidifier User Manual


 
trouble shooting
TROUBLE SHOOTING
When the air cleaner is operating correctly and the following
conditions are met, the green light on the power pack/door
assembly will be on:
The air cleaner is correctly assembled and installed.
The power pack/door assembly is fully closed.
The unit is plugged into a live 120 VAC outlet.
The switch is in the ON position.
The furnace/air handler blower is running.
If those conditions are met and the green light does not come on,
the air cleaner circuit is not being activated. If the green light blinks
at approximately one-minute intervals, the air cleaner circuitry is
attempting to turn on, but is quickly turning off due to either an over-
current condition or because arcing is occurring between components.
Check the inner assembly as follows:
1. Turn the furnace/air handler blower off.
2. Turn the air cleaner off.
3. Unplug the air cleaner.
4. Open the power pack/door assembly.
5. Remove the inner housing assembly.
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