Hydro Hot

[Planemechanic]

I have a 06 G7 with Hydro Hot system. We have two thermostats in the coach, one in bedroom and one in kitchen. Both have to be set at same temp for the hydro hot to work. Is this normal. If one is set warmer than the other the fans will come on and blow cold air for that thermostat,but hydro hot will not light till the other thremostat is set the same. It seems to work good otherwise. Was thinking maybe it not wired right. Any suggestions.

[Planemechanic]

Fixed the problem today. The pump wires were crossed so when the bedroom thermostat called for heat the fans would come and the living room pump would come on, hence only cold air from bedroom registers. With both thermostats set the same both pumps would run we would get heat from all registers. Been like this since it was new!!!!!

[RayChez1]

Glad you got the hydrohot to work properly. And yes there are some things that are cross wired out of the factory or like mine were never connected. When my coach was new I couldn't get the air to dump. Took it to Freightliner and they discovered that some electrical wires were never connected out of the factory. Fact they were even covered with three inches of sprayed on foam insulation. So it does happen, glad you discovered your problem.