Odd problem with a/c thermostat
My 2012 Tiffin Open Road has a thermostat problem that I have traced to the remote sensor.....maybe. The front A/C has a remote sensor about in the center of the coach on the drop ceiling. I noted th...
Forum Discussion
1. On Tiffin the remote sensor is next to a RETURN vent. There should be NO cold air in that area. The COLD exhaust is on the Passenger side of the ceiling.
2. As you found out, replacing parts is not the best way to tackle a problem. The remote sensor goes to the front AC control board, You need to go on top and remove the top AC cover and the Evaporator cover to access the control board and look at the wiring connections on the control board. The connections will be labeled.
3. Are you stating that regardless of the air temp or condition, the tstat shows 99 all the time? What I would do, is take the original Sensor and go up to the front AC control board and connect its 2 wires to the control board and see what the Wall Tstat shows. IF it shows a correct different temp then the wire from the ceiling to the roof AC control board is pinched somewhere. If so, you just run a new 2 wire harness down the return ductwork to the remote sensor. Doug
Are you the original owner? If so, has ANY work been done on the front AC? Replaced?
You did not state what model tstat you have. RVP has about a dozen models. The RV Comfort HP model does have the remote sensor connected to the wall tstat. They are the 2 Green/white wires coming out of the wall tstat. All others, the sensors go to each AC control board.
2. As you found out, replacing parts is not the best way to tackle a problem. The remote sensor goes to the front AC control board, You need to go on top and remove the top AC cover and the Evaporator cover to access the control board and look at the wiring connections on the control board. The connections will be labeled.
3. Are you stating that regardless of the air temp or condition, the tstat shows 99 all the time? What I would do, is take the original Sensor and go up to the front AC control board and connect its 2 wires to the control board and see what the Wall Tstat shows. IF it shows a correct different temp then the wire from the ceiling to the roof AC control board is pinched somewhere. If so, you just run a new 2 wire harness down the return ductwork to the remote sensor. Doug
Are you the original owner? If so, has ANY work been done on the front AC? Replaced?
You did not state what model tstat you have. RVP has about a dozen models. The RV Comfort HP model does have the remote sensor connected to the wall tstat. They are the 2 Green/white wires coming out of the wall tstat. All others, the sensors go to each AC control board.
