commentator alternator

1999 RV with duo therm furnace. Thermostat had 4 cycles but now furnace cycle doesn't show, furnace won't star?

Furnace doesn't start. No heat or blower
Pluged in or generator. 4 cycles, cool, fan only, furnace and heat strip. Fuses ok.


Are you plugged in or using battery power?
Have you checked the fuse?
Was it 4 cycles with heat or 4 cycles of the blower kicking on with no heat? If it was the blower and no heat, then the furnace will go into "lock out".

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