Bill R Posted February 14 Share Posted February 14 Since purchasing our coach about 1 1/2 years ago I have had off and on issues of controlling the temp of the dash air. At times I would have the temp setting at 60F and nothing but hot air. And vice versa at high temp settings. By changing the digital temp controller up and down several times the temp would eventually change to where the temp coming out was close to the selected temp. I have determined the cause is that the heater control valve is not always moving when I change the temperature settings. And sometimes the heater control valve moves significantly more with respect to the magnitude of the set temperature change. Could this be a bad motor controller for the heater valve? Should I clean the contacts on motor controller connector? Is the system designed with a feed back loop that changes the heater control valve as the inside temp approaches the set temp? Or does it require constant adjustment to get the temp set where you want it. Right now when the heater valve moves to a position, it just stays there until I change the set point. And when I change the set point from one temp, to another, and back to the same, the heater control valve does not go back to the same position. The heater control valve is erratic at best. Also, recently my digital display has also been freezing up. No change when pushing the temp select up or down. If I cycle the ignition switch, it starts to work. Suggestions on a fix for this. Clean contacts? Has anyone experienced these issues, and where do you suggest to start troubleshooting? Link to comment Share on other sites More sharing options...
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!Register a new account
Already have an account? Sign in here.Sign In Now