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2003 Patriot no 12v power to Hydro-hot and rear thermostat

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Mike Hallgrimson:
I have looked through several posts and cannot find something similar.
Went out to work on the floor replacement. Everything inside the coach works except:
Hydro-hot is not getting any 12v power. No green light on Diesel burner. Electric heat light turns green.
No 12V power to rear thermostat.
Went through all the fuses and breakers that I can find.
Checked wiring diagrams and cannot find any reference to thermostat or hydro-hot 12V.
Any suggestions on where to start?
Thanks
Mike

Eric Maclean Co-Admin:
Mike
We need a little more information like the hydro hot model number and your coach year and model.

You should be able to find the hydro hot manual in the coach assist section of the form under heating ( aqua hot hydro hot library link )

On page three of the service manual you will find the hydro hot wiring diagram.
In the wiring diagram you will see the J 1 plug terminals are responsible for the thermostat power feeds and zone controls.

Eric

Mike Hallgrimson:
Eric,
Thanks. I have not been able to go check this until this morning. I took the cover off of the control board and saw a red light on. Checked the cover and it was the low voltage light. Could not stretch my neck enough to see it with the cover on. Reset and all is good now. Thanks again.

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