Back in October I got a new Coleman-Mach 48008-9660 3 P. S. heat pump and a 9630-715 non-ducted ceiling assembly.
With warmer weather, I've noticed a problem with the air conditioning. On LOW COOL or HIGH COOL, with the temperature knob in an intermediate position between coldest and warmest, after a few minutes of operation, the fan noise suddenly decreases markedly, and the voltage drops to roughly 106 volts. After 2-3 seconds, the fan noise and the voltage return to normal. However, when on the genset or at an RV park with marginal voltage, the voltage drops so low that my surge protector disconnects, turning off all AC electricity in the RV.
When first turned on, air conditioning starts normally, with only a slight voltage drop. There's never a problem if the temperature knob is at the coldest setting. There's never a problem on HIGH HEAT (heat pump). The RV has 30 amp service. There's no wall thermostat; all controls are in the ceiling assembly.
I could be totally wrong, but it seems like the compressor stops and then restarts after 2-3 seconds.
Does anyone else have this problem?
Airxcel just says take it to a service center, and I guess I will.
BTW, the heat pump works well, though I wish it had a LOW HEAT setting; the fan is noisy on high.
