I have a 2005 Holiday Rambler Admiral 34SBD with a Dometic Penguin 13,500 btu heat pump forward and an 11,000 btu a/c unit aft, both units controlled by a 5-button Dometic comfort control center with remote sensors. When stationary (the coach operating on 50 amp shore power or generator) and both roof top units in cooling mode, the forward unit fan will stop after about 20 minutes of operation.
However, the compressor will continue to run until it stops from overheating or until I manually turn it off at the comfort control center. The aft unit operates normally. When underway at highway speed operating on generator with both roof top units in cooling mode, the forward unit will, on most occasions, operate normally so long as the fan is in the "low" position. If the fan is in the "high" or "auto" position the fan will stop after about 20 minutes of operation. Again, the aft unit operates normally. I'm reasonably confident that the forward unit fan motor is not the problem. I've run the forward unit in "fan only" mode for several days at a stretch without a glitch. Has anyone else ever experienced the foregoing difficulty? If so, what was the cause of the problem?
I welcome any and all comments, suggestions and/or recommendations aimed at a solution.
Thanks in advance for the help.