Dometic zone 1 dead
My front zone seems to have come up lame. (rear zone works perfect) This is a 5 button dometic duo-therm, controling a pair of 15k dometic a/c - heat pump units, and a pair of propane furnaces. ...
Forum Discussion
tropical_ron wrote:
Do all units show up in the thermostat control? If so, cableing is most likely ok. If furnace is missing in control display, suspect disconnected rj11 control cable that diasy chains between each component; front AC, rear AC, front heatpump, rear heatpump, front furnace, rear furnace... Just our experience...After service tech forgot to plug-in one of the rj11 cables...
A Cable disconnected will NOT cause a loss of only the furnace on the display. It will cause a LOSS of all functions(display) for that Roof AC unit. There are only 2 cables on a 2-roof top system.
1. Cable from Zone 1 to the wall Tstat
2. Cable from Zone 1 to Zone 2
3. Cable from Zone 2 to Zone 3 IF you have 3 roof top units
