Question about Carrier 38CKC042 Air Conditioner
Carrier Furnace Model#40AQ030300BB
Any help is appreciated. Could it be the heat coil or relay?
Most likely heat sequencer. Fan relay will run even if this is out. check if you have continuity in the coils first.
Posted on Feb 14, 2009
It could be the circuit board, relay, heat strip coil or limit. If you have the fan switch at the t-stat in auto and the fan is running constantly it's probably a high temp limit that tripped. Was your filter clean or dirty? If you had a dirty filter and/or A/C coil it will restrict air flow and cause the furnace to overheat.
Posted on Jan 18, 2009
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Posted on Jan 02, 2017
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