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guthriez's avatar
guthriez
Explorer
Jan 08, 2015

Motorhome heat pump troubles

Our motorhome's two-ton Coleman heat pump is suddenly drawing too many amps to run on 30-amp service. On 50-amp service it runs ok, and when we use our 8KW generator it runs fine too. We've changed the filter and it doesn't make a difference. The Powerline Energy Management system indicates it's drawing close to 40 amps. The model number is 6537-871. We're in Tucson for the next couple of months and would like to get this fixed sooner rather than later. Any suggestions or recommendations? Thanks for any ideas!

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  • dougrainer's avatar
    dougrainer
    Nomad
    Jan 08, 2015
    You have 2 compressors. try to run each compressor separately to determine WHICH is pulling the excess amps.EACH compressor on your model only pulls 8.3 amps. The TOTAL amp draw on your unit with both compressors running and fans is 23.8 amps. If you have a defective compressor the odds are the amp draw would continue to go up until the overload or 120 breaker would trip. The odds are your RUN capacitor for the compressor or both is defective. Since capacitors are cheap, I would replace BOTH compressor run capacitors since your system is older. It may be both run capacitors are bad and the reason your amp draw is so high. Doug

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