![]() If problem persists, replace control board.Ĥ consecutive limit switch faults (LED 4 flashes)Ĭheck the operation of the indoor (evaporator) fan motor and that supply-air temperature rise agrees with range on unit nameplate information. The IGC sensed flame that should not be present. Ensure that the supply-air temperature rise is in accordance with the range on the unit nameplate. If the overload trips, allow 10 minutes for automatic reset.Ĭheck the operation of the indoor (evaporator) fan motor. ![]() Units without a 24-v circuit breaker have an internal overload in the 24-v transformer. These are heat/electric cooling systems which are able to use the comfort of gas heating packaged along with efficient electric air conditioning.Ĭheck 5-amp fuse son IGC, power to unit, 24-v circuit breaker, and transformer. Air conditioners Carrier 48VL-A as well as split are single packaged air conditioners having the gas furnace system.
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