Roy & Ann Posted October 6, 2021 Report Share Posted October 6, 2021 (edited) I have a 2005 5th wheel with two Dometic ACs. It is controlled by a Dometic Duo 5 button (3310009.000) thermostat. The unit is defective, I cannot access zone 2. There are no direct replacements available. Does any one know if I can substitute a different model? It controls both ACs and the furnace. Is there a way to just control zone 2 with a separate thermostat? Thanks Edited October 6, 2021 by Roy & Ann Quote 2005 New Horizons 36ft 5th/upgrades-Generator, Disk Brakes, Solar Package, Inverter. and more2008 Ford F450 crew cab DRW K3ROYhttp://www.roanontheroad.blogspot.com/ Link to comment Share on other sites More sharing options...
GlennWest Posted October 6, 2021 Report Share Posted October 6, 2021 Have you tried to reset it. Quote 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
Kirk W Posted October 6, 2021 Report Share Posted October 6, 2021 5 minutes ago, GlennWest said: Have you tried to reset it. How do I reset my Dometic 5 button thermostat? Quote How do I reset my Dometic 5 button thermostat? To RESET the Dometic 5 Button Thermostat: Press and Hold in the top and bottom buttons, Turn ON the bottom On/Off switch. FF will appear, release the buttons. IF EE appears, there is a fault with the communication cable. It would appear that Amazon has a replacement? Quote Good travelin !...............KirkFull-time 11+ years...... Now seasonal travelers.Kirk & Pam's Great RV Adventure Link to comment Share on other sites More sharing options...
vermilye Posted October 6, 2021 Report Share Posted October 6, 2021 Or, if you want to add Bluetooth & WiFi, check out a Hutch Mountain Micro Air EasyTouch RV 357. They make a number of different models so be sure to use the menu to find the correct one. Quote Travel photos RV Blogs Journals & Travelogues at:http://www.lakeshoreimages.com My Travel Blog - Jon's Journeys Link to comment Share on other sites More sharing options...
Roy & Ann Posted October 7, 2021 Author Report Share Posted October 7, 2021 I have reset the unit many times. No help. Quote 2005 New Horizons 36ft 5th/upgrades-Generator, Disk Brakes, Solar Package, Inverter. and more2008 Ford F450 crew cab DRW K3ROYhttp://www.roanontheroad.blogspot.com/ Link to comment Share on other sites More sharing options...
Wrknrvr Posted October 7, 2021 Report Share Posted October 7, 2021 A few things to do before a full replacement with new pc board in ac unit. Unplug the connector on the back of the thermostat. And plug it back in. I would suggest then to cut the plug end off and replace it. Now when you do that you need to get the color code of wires in the same direction. I have solved several thermostat problems by doing that. Now on my 5 button unit the zone one furnace has quit after 17 years. I installed a new thermostat. It did not work. I also cut the plug off and that did not work. So my next move will be to go to the a/c unit and remove the communication cable and replace that end. If that does not work I will either swap pc boards from the front Ac to the rear Ac. Or install another pc board. I have been doing rv repair since 2008. And only ever replaced maybe two 5 button thermostat. Safe Travels, Vern Quote Link to comment Share on other sites More sharing options...
GlennWest Posted October 7, 2021 Report Share Posted October 7, 2021 I tried to give one away a few years ago. Finally threw it away. They give little trouble. I did fix a issue like yours when I had my DRV by going to ac that didn't work and simply unplug and replug thermostat wire. Quote 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
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