rodneyskinney@bellsouth.net Report post Posted January 20, 2020 dometic Share this post Link to post Share on other sites
f433921 Report post Posted January 20, 2020 Don't waste your time, performance below 4O F is not recommended. Jim Share this post Link to post Share on other sites
kaypsmith Report post Posted January 21, 2020 I don't know how the dometic heat pump is made, my Carrier AirV has a backup heat strip that automatically comes on and the heat comes from that source at temperatures below 40 F. I hope Rodney will come back to let us know MORE about this question. Share this post Link to post Share on other sites
txiceman Report post Posted January 21, 2020 Coleman RVP heat pumps have a temperature sensor in the outdoor coil set fro 18 to 20 degF. The coil operates approximately 20 degF below the ambient,,ie 38 to 40 degF. When this limit is reached, the compressor is shut off and the furnace is started. If the indoor temperature is 5 degF below the thermostat set point, the furnace will also come on. The unit will cycle three times on the outdoor sensor and then lock out the heat pump for furnace only operation. To reset, you need to turn the unit off st the thermpstat. I am not sure how the Dometic units operate. Ken Share this post Link to post Share on other sites
wildebill308 Report post Posted January 21, 2020 4 hours ago, rodneyskinney@bellsouth.net said: dometic Welcome to the forum. The question is? Bill Share this post Link to post Share on other sites
bm02tj Report post Posted January 21, 2020 If run below freezing the water from defrost will freeze on the roof with no where to go Share this post Link to post Share on other sites
manholt Report post Posted January 21, 2020 I very seldom run the heat pump on my roof AC unit. If I know it will be in the high 40's, I turn on Aqua Hot on the elect side...below the high 40's, diesel side! Last summer, in the Eastern Providence of Canada, mid June to mid August, we ran AH every night on diesel as most mornings was in mid 30's, one night was 27!!! St. Anthony, Newfoundland. Share this post Link to post Share on other sites
five Report post Posted January 22, 2020 On 1/21/2020 at 5:46 AM, manholt said: I very seldom run the heat pump on my roof AC unit. If I know it will be in the high 40's, I turn on Aqua Hot on the elect side...below the high 40's, diesel side! Last summer, in the Eastern Providence of Canada, mid June to mid August, we ran AH every night on diesel as most mornings was in mid 30's, one night was 27!!! St. Anthony, Newfoundland. Same here, I never run the HP. Why bother....it's worthless below about 40 degrees, is loud and inefficient. The Aqua Hot is the opposite....powerful, quiet and heats the entire coach through two zones very well. Share this post Link to post Share on other sites
