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billr · 11-23-2012, 11:05 AM

In case anyone needs to reset the Heat/AC control unit (Duo Therm) here is the reset procedure.

Switch control unit off
Press and hold at the same time Zone and Mode SW
While holding the two SW, turn control unit on
"FF" should appear on the display
After 2 sec release SWs.

If the control gets confused, gives limited access to units or acts just plain strange, try the reset.

This may be old info, but worth mentioning once and a while. Came in handy this AM when our HP and Furnace disappeared from Zone 1. We did have a Breaker trip on the post yesterday while both ACs were on. Soft breaker likely, but we also had everything in use. I think the control got confused with the power drop.

Bill

11-23-2012, 11:05 AM	#1
billr Senior Member Join Date: Jan 2006 Location: Ontario Canada Posts: 857	Reset for Dometic Duo Therm control In case anyone needs to reset the Heat/AC control unit (Duo Therm) here is the reset procedure. Switch control unit off Press and hold at the same time Zone and Mode SW While holding the two SW, turn control unit on "FF" should appear on the display After 2 sec release SWs. If the control gets confused, gives limited access to units or acts just plain strange, try the reset. This may be old info, but worth mentioning once and a while. Came in handy this AM when our HP and Furnace disappeared from Zone 1. We did have a Breaker trip on the post yesterday while both ACs were on. Soft breaker likely, but we also had everything in use. I think the control got confused with the power drop. Bill __________________ Bill and Joan 4 Collie pups 05 M/S 38RL3 #2046 01 Volvo VNL770 05 Smart Passion Loaded piggyback https://picasaweb.google.com/billandjoan Weigh-It Portable RV Scales https://www.weighitrv.com