6 |
Go to Thermostat, make sure system is "ON", "Heat", Fan is "Auto"
Wait a few minutes, the furnace will go through firing sequence, and warm air should come out from registers once the sequence is successful
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1 |
Turn OFF furnace power |
2 |
Take a photo of the circuit board with all its wiring connectionsRemove all wiring from circuit board |
3 |
Replace circuit boardPlease refer to the photo to re-connect all wiring
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4 |
Put bottom cover back on furnaceMake sure that it is tight and in correct position
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5 |
Turn ON furnace power |
6 |
Go to Thermostat, make sure system is "ON", "Heat", Fan is "Auto"
Wait a few minutes, the furnace will go through firing sequence, and warm air should come out from registers once the sequence is successful
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