Norcold 2118 polar max fan/hi-limit question

So the shakedown cruise continues. Had the high temp limit switch shut down my fridg in transit. Reset with magnet...yes it worked.
But I notice that the 12 v computer fan in the lower rear of the fridg isn't t working. It was working the other day.
Can anyone advise if this fan is on a thermistor and only works at certain temps...or if it failed and could be the cause of my high temp issue.

Thanks...Celt.

PS...getting tired of the issues....AC failure, slides creeping out and now this not to mention other minor issues....irritating at best.



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Re: Norcold polar max fan questiin

If it's a Norcold 1210, it has a thermostatic switch controlling fan operation. I think in the past someone tied the wires together to bypass the thermostat as a temporary workaround.

Re: Norcold polar max fan questiin

Answering my own question...the fans are thermistor controlled...all seems working well at the moment. Thanks danemayer!

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Re: Norcold polar max fan questiin

They are controlled by a small thermostat located on the fins on the backside of the refrigerator.
Dans attachment shows it pretty well.
If you have two fans then you should see three wires going to that thermostat.

Peace
Dave

Norcold 2118 hi temp limit switch question

So my 2118 has been brought back to life by resetting the high temp limit switch. Now trying to troubleshoot the cause.
High temp switch was triggered in propane mode while traveling in South FL...very hot and humid day.
Interesting that when we switched into gas mode it lit with a loud noise...but stayed lit.

So, I am wondering if an out of adjustment flame will cause both the "loud" start and hi temp switch trip....or any other thoughts on why this 3 week old fridg would overheat in gas mode traveling in hot weather. We have run it a few days on gas prior to this incident to test system with no issues.

Fridg is operating fine now on elec. It has 2 fans in the back compartment, one high and one low.

Any suggestions appreciated... Nowhere near a Heartland dealer.

Celt

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So...would this insulation blockage cause hi temp limit

Thus us a follow-up to my previous post...but the only way I could get a pic up on Tapatalk.

This shot taken after I moved the insulation that was partially blocking the vent. Notice where it was stuck onto the cooling system tube.

I suspect this caused my fridg to throw the high limit switch...anyone agree?

Celt





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Re: So...would this insulation blockage cause hi temp limit

That sounds like a pretty good cause and effect. Free upward convective air flow (think chimney air flow) is VITAL to ammonia adsorption refrigerators. Is your refrig located in a slide? If so, there should be thermostatic airflow fans to aid in this heat exchange airflow. If in a slide, is there an airflow baffle near the top vent? You can purchase these at http://rvcoolingunit.com/-Improve-your-Cooling-Items-C320215.aspx?sid=298 .

High temps should be avoided in ammonia cooling units. High temps in the cooling unit due to being strongly off level is the classic killer of RV refrigerators, causing the internal circulating coolant additives to solidify into a steel-like plug.

Re: So...would this insulation blockage cause hi temp limit

wdk450 said:

High temps should be avoided in ammonia cooling units. High temps in the cooling unit due to being strongly off level is the classic killer of RV refrigerators, causing the internal circulating coolant additives to solidify into a steel-like plug.

Click to expand...

There was a gentleman at the Tucson Rodeo Rally in February that did a seminar on this very issue, and of course he has a device to help with this issue.

While many there thought his product was 'snake oil', it made sense to me, most especially after seeing his demonstration (I took photos, will post them later).

And a few people had him install his unit there at the rally, and I am considering having him put one in our Prowler at the National Rally in Las Vegas in October.

Here is how I see it . . .

I see lots of people here spend lots of money on all kinds of safety products for their RV's . . . most way more expensive than this product!

$200 for basic product and install and I think it was $280 for the 2-fan kit!

His website is: www.ARPrv.com

The other day on my way to work I saw a wrecker pulling a large motorhome and the whole roof was burned off of it, however, I could easily see where that fire started . . . the refrigerator!

Re: So...would this insulation blockage cause hi temp limit

My refrig has a meltable link wired into the incoming 12volt DC circuit. If there is a fire, the link is supposed to melt, cut off the 12 volts DC, which will close the spring loaded solenoid valve for the propane supply to the refig burner, thus limiting the fire. But, I also have spent $175 for a self-deploying Halon fire extinguisher that is mounted in the external refrigerator compartment. http://rvcoolingunit.com/SS-30-Halon-Extinguisher-90-Degree-Auto-Deploy-P1872453.aspx