Hey guys,
I'm hoping someone here can help. For a long time, our Coleman Mach 48004-966 (Roof A/C with Heat Pump) has worked in cooling mode EXCEPT would only run with Fan on Low. If you place the wall thermostat switch to fan High it will shut off.
Recently, while running, the fan stopped but the compressor stayed on. I did some research and found the likely culprit was the capacitor(s). I replaced both of them on this model, but the problem remains.
The most recent time I tried it today after replacing the capacitors, I turned the switch to Cool. It took around 30 seconds before the compressor turned on, then the fan kicked on and ran for about 15 seconds (on low). Then it started back up on its own and ran until I shut it off (by turning it to High). When I turned it back to Low the compressor started and the fan kicked in right away.
The manual says other issues related to this symptom could be selector switch, fan motor and wiring (e.g. anything). Does this behavior sound familiar? Could it be the wall thermostat? It's old and very flimsy.
Thanks in advance!
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~2014 Jayco Greyhawk 31FS
David, Meranda, Jamie & Catticus