Thermostatic Controls - RV Thermosts Cycles to fast

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markschm
10-08-09, 12:31 PM
I Have a 12 volt powered RobertShaw thermostat D87005. It is very basic and controls my propane furnace in a 20' RV. I am having issues with it because it cycles very fast. It will turn the heater on which will run for about 2 minutes and then it turns off for a few minutes and then back on again. Are there any controls that should be able to slow the cycle rate down? The thermostat is not located near a heat duct.

Any suggestions would be appreciated
markschm

Jay11J
10-08-09, 09:31 PM
Is the model # D87005 correct? I am not able to find that model on the web.

Have you taken the cover off to see if there is a setting/pointer that may be say "Longer' on it?