Coleman Heat Pump blowing cold air

dshinnick wrote:
Hey all-

We have a 2015 Itasca Sunstar (Winnebago Vista) with a Coleman A/C which also functions as a heat pump.

When in heat pump mode it frequently...but not always....blows hot for awhile then blows cold. Not A/C cold, but ambient-temp cold.

Notes:

1. When it blows cold it never ultimately switches itself off; we have to do it. Makes sense, really, because it never reaches the "set" point.

2. When it does operate normally it blows hot, reaches the correct temp, and shuts itself off.

3. When it starts to blow cold I set the thermostat down a degree below our current temp. It shuts off, as it should. I then set the temp up a degree above our current temp; this kinda "reboots" the unit. After the appropriate cycling delay, it comes back on, hot. For a few minutes, then goes cold again. I can repeat the "reboot", and it does it again: comes on hot, then cold.

4. I have looked at the unit on the roof: all appears fine, no leaf or debris buildup around the unit at all that I can see.

Based on #3, the fact that it comes on warm and then turns cold, I'm wondering if it could be the thermostat on the wall giving erroneous commands to the roof unit. The thermostat says "RV Comfort-HP". Next line: "Coleman Made".


Any thoughts?

Thanks-

Dave

Dave,
Just wondering. I'm not the sharpest tool in the shed but, to my knowledge, Winne stopped using the "heat pump" which, was also kind-a known as a basement A/C unit, way back about 2009 or so. I could be off by a year or so. Now, also, I'm not the most schooled on roof top A/C units but, if that's what you have, is there a *heat pump* in those or, is there just some sort of heat strip type heater in them?
Scott