Originally Posted by PTJeep
Hey Steve !!!
Well currently it says 54 degrees F. I have picked out a repairman to come and take a look at it but.
Check the refer for stored codes. Instructions on how to do this are in the troubleshooting guide in the files section or directly from Norcold.
Maybe I can help with this. I have the same refer and have been able to make it maintain the interior temp right at 34F, as long as nobody leaves it open too long.
You're going to need a volt/ohm meter. Even a cheap one will do the trick.
If it's too warm on gas take a look at the flame. If it's too warm on A/C check the resistance of the two heating elements. If the flame/heaters look OK try moving the thermistor UP on the fin, or even to a fin further to the right.
Chech the resistance of the Thermistor. The proper resistance at 68F is in the troubleshooting manual. (meaning I don't remember what it is!)
Look up the 'Muddypaws Mod'. This will fool the thermistor into reading higher fin temps than actual and won't cause the refer to go into BOS mode or shut down completely when it goes into defrost.
I know it's counter to what everyone thinks but my 1201 works best on a setting of 3 or 4. If I put it any higher than that it actually raises the interior temp.
How is it installed? There should be no more than an inch clearance between the heat exchanger and the exterior walls of the refer box. Anything bigger misses up the air flow and makes it much less efficient. The installation manual states it very clearly but some builders 'do their own thing'.
Are both fans working? One dead fan will do exactly what you're experiencing. So will anything that obsructs the airflow. Like a critter nest, leaves in the vent etc.
Is the thermostatic fan switch working? On mine it's mounted high up on the right side of the upper most fin. For me it was easy to get to but your's may not be.
And of course, you may have bad door seals.
I was able to get a friends 1201 to cool down to 40 by simply putting a small desk fan at the bottom of the cooler to force air in and up. It was a Winnebago, it had 6 inches of airspace behind the heat exchanger. Installed improperly.
I'm sure Wayne will attest to how resistant I am to putting a residential in my rig. Lets just say I have my reasons and let it go at that.
Good luck with it. If I can help with specific questions shoot me a PM.
Muddypaws, Proud to be Mutant #56 (I think - the numbers keep mutating in my mutated head)