Norcold refrigerator alarm

[doublehooked]

Yesterday I started my refrigerator and it ran for about 3 hours. Then I got an alarm that read no co and according to the book this means the refrigerator cooling has stopped cooling. It said check vents to be blocked, if doors are closed if vechile is level. Everything looks correct. Last time I ran it was last month and everything was fine. I just tried it again this morning and as soon as I turn it on it gives me the same alarm. I've only had this coach for 2 months and still new to all this. It's a four door Norcold ref. with ice maker. Operating it on 120v ac when this happens. Anybody know what I should check next?

Thanks
Gary

[rsholm]

I've had this happen routinely - check for a flame obstruction. It's usually a large rust flake that falls down the flue and blocks the burner. Hope this helps.

[doublehooked]

I'm going outside and try it on lp gas to see if it works that way.
Gary

[doublehooked]

Unit gets same alarm on gas. Looking into the book a little further it states if you get the no co alarm you can reset it one time then if it does not go through the full cooling cycle it locks out. Then need to take to dealer.
Here we go.
Gary

[Clifftall]

Quote:

Originally Posted by doublehooked Yesterday I started my refrigerator and it ran for about 3 hours. Then I got an alarm that read no co and according to the book this means the refrigerator cooling has stopped cooling. It said check vents to be blocked, if doors are closed if vechile is level. Everything looks correct. Last time I ran it was last month and everything was fine. I just tried it again this morning and as soon as I turn it on it gives me the same alarm. I've only had this coach for 2 months and still new to all this. It's a four door Norcold ref. with ice maker. Operating it on 120v ac when this happens. Anybody know what I should check next? Thanks Gary

Besides the 120 V, it also needs DC to run. Are your batteries on and charged?

["007"]

Good point clifftall you need a good 12v's.
Heres a thread that also may help in adding some fans to get the heat down in this hot weather from behind your refrigerator.
Thread is on page #5 go back to page #1 for full story there are other links you may want.

[Gary RVRoamer]

If you get the NoCo condition twice in a row, the circuit board shuts down and needs a reset before you can get it going again. Officially it requires a service tech to do that, but you can find the rest procedure here, about halfway down the page see Norcold NoCo reset. There are two different procedures, depending on the year of the fridge.

Service Documents

[JWatkins]

You can do the reset yourself, but it is a bit of a pain getting into the circuit board. An option for you is to drill a hole into the circuit board cover while you have it off, so that next time.... and there could be more, you can insert the jumper through the hole and not have to pull the cover off. I suggest that you cover the hole with duct tape or similar to keep out dust, water etc. I have had to reset mine several times and the hole makes it a snap.
Joe

[RVDude]

You might get some more detail by using the diagnostic features on the refer. Click to see an irv2 post on how to use the Norcold diagnostic features.

[Purplefans & Harvey]

I just had this happen on my 04. 1200lrim 4 door fridge.

The service tech said because of the high heat and humidity
the circuit switched and had to be reset.