Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: Don and Donna on January 28, 2012, 09:56:15 pm

Title: Dometic NDR1492 cooling sporadicly
Post by: Don and Donna on January 28, 2012, 09:56:15 pm
When cooling, both refrigerator and freezer cools OK but the unit will shut down completely while riding down the road and or when sitting still.  I disconnected the P2 Thermistor plug from main circuit board, turned unit on, and after 12 hr, the freezer temp was -5f and the fridge temp was +22f. I then plugged the P2 Thermistor plug back into the main circuit board and the temp adjusted according to the setting 1 through 5.
Does this problem appear to be the Thermistor, Main Circuit board or something that I have not thought of yet?  By the way, prior to disconnecting the Thermistor from the Main Circuit board, I could not get the unit to cool at all but the heating elements were heating correctly.  Thanks for every ones help.
Don Steele
Title: Re: Dometic NDR1492 cooling sporadicly
Post by: Barry Beam on January 28, 2012, 10:40:07 pm
When cooling, both refrigerator and freezer cools OK but the unit will shut down completely while riding down the road and or when sitting still.  I disconnected the P2 Thermistor plug from main circuit board, turned unit on, and after 12 hr, the freezer temp was -5f and the fridge temp was +22f. I then plugged the P2 Thermistor plug back into the main circuit board and the temp adjusted according to the setting 1 through 5.
Does this problem appear to be the Thermistor, Main Circuit board or something that I have not thought of yet?  By the way, prior to disconnecting the Thermistor from the Main Circuit board, I could not get the unit to cool at all but the heating elements were heating correctly.  Thanks for every ones help.
Don Steele
Thermister testing measurement instructions
Dometic Thermister Measurements (http://www.beamalarm.com/Documents/dometic-thermister-measurements.html)
Title: Re: Dometic NDR1492 cooling sporadicly
Post by: Don and Donna on January 29, 2012, 09:28:15 pm
Thanks Barry.  I will put your info to work.  Don Steele