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Originally Posted by Ikeshel
I did not know that there is a "Defrost" mode, have to look into that.
As for the model, it's 1210IMD
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We have a 1210 as well.
Every 49 hours (not 48 hours) the Norcold 1210 and apparently the larger 2118 will shut the cooling unit off until the fridge reaches roughly 42 degrees F to defrost the fins. (Some sites say the maximum "cooling unit is off" period of time is four hours but Norcold is silent on that themselves.)
Unfortunately this also causes the freezer temp to also increase, sometimes into the low 20's.
Then the fridge turns the cooling unit back on.
But depending on the time of day the fridge and freezer temps may continue to increase until the cooling unit catches up.
Because Norcold chose 49 hours, the start of the defrost cycle changes one hour every two days.
So if you turned the fridge on at 10 AM then two days later it turns itself off at 11 AM. Two days later it turns off at noon, etc.
What I would do is turn our 1210 off about 9 PM on the first day of a trip, leave it off for about 30 seconds, and then turn the fridge back on. That resets the defrost cycle timer so it runs overnight instead of in the heat of the day. Of course, every few weeks I had to repeat that as the defrost start time started to occur in the morning.
What you can try right now if the temps seem high AND the fridge has been turned on for at least two full days is turning the fridge off for 30 seconds and turning it back on. That resets the start of the defrost cycle to "now" so if a defrost cycle is in progress right now, it stops and the cooling unit turns on.
Make sense?
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I do know that my rig was slightly forward (bubble touching line but not over) and leaning right (bubble about 1/8th bubble over line 7/8th within the lines) Using a torpedo level.
I leveled it again so bubbles were within the "lines" even though I thought that I was still in the "safe zone" This may have been the 2nd or 3rd time in the past 6 years of owning that I was not almost or perfectly level (I tend to be anal about that)
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Lose those levels. Install a bubble level app on your phone that will read in tenths of degrees. I use Bubble Level from Gamma Play on my Android phone. Real bubbles and lines on a bubble don't mean squat; real measurements of the degrees does.
Set the phone on a counter next to the fridge or a similar location. If you are less than 3.0 degrees off-level front of RV to rear of RV you're golden (because most RV fridges are installed "sideways".)
Our driveway is 2.5 degrees front-down and our fridge fires up and cools normally. I have an ARP Fridge Defend installed and it shows the same boiler temperatures as when perfectly level.
I won't run the slides unless I'm within 0.5 degrees of level but the fridge is perfectly happy.
Ray