I have a 2011 Eclipse Attitude toy hauler with a Dometic refer. The fan cycles on and off every 30 seconds AFTER being "fixed" by the local dealer. Supposedly the fan will turn on when the temp gets above 100 degrees and then goes off below that. At first it was cycling every 7 seconds, they "fixed" it by replacing the thermal switch and now it is every 30 seconds. After returning it to the dealer upon further inspection they said the hole in the roof is too small, it is about 70% the size of the inside of the vent, plus there is a rafter going through the center of the hole, as is a bunch of wiring. I suppose it is possible, has anyone ever heard of a problem of like this? It won't be that hard to open up the hole (they wanted $400.00 to do it) but I don't want to waste the time if it is a refer issue not a circulation issue. Thanks all!Tony

I would be worried about the heat deteriorating the wiring over time.Why not call the manufacturer and ask them. Could be they took the obstruction into account when putting in the vent.I would troubleshoot by first putting a good digital thermometer in the went and seeing what the temperature actually is when the fan kicks on.http://www.eclipservmfg.com/contacts

IIRC that thermodisc switch closes when temp goes above 100*F and then opens temp drops below 90*F.If outside ambient air temps are over 90*F then the fan is going to be running constantly Proper clearances for correct air flow (draft affect) is critical to good cooling unit operation on absorption fridges.The roof opening being smaller than roof vent and obstructed doesn't sound like the rv mfg. met Dometics installation requirements.Which model of Dometic fridge.....installation manuals will give max/min clearances & measurements needed.

You have a another bad snap thermistor or it is touching something it should not be. It is designed to run with air temps and not be contacted to something that will dissipate heat quickly. If your refer is working normally other than the fan cycling access the device and see if they have it screwed to some fin that may cause it to cool quickly.

Don't let then mess wit the hole in the roof. They're grasping at straws because they don't know how to fix it or whats going on.

No way I am spending 400 bones for them to enlarge the hole in the roof, if that is the issue I will do it myself. I sent an email to Eclipse and my contact there who has helped me several times said she would forward it to and engineer and they would get back to me. The way I see it I can either cut the hole bigger (a few hours work) or take the fridge out to check the thermistor myself (also a couple hours). Depends on what Eclipse says, but my guess is they use the same template for every trailer with that size refer, so I really doubt that is the problem. The other odd thing is the fact that no matter what the temp outside it cycles every 28 seconds like clockwork. The other thing is that my buddies have NEVER heard their fans turn on - EVER - and their rigs are the same age as mine.

Dometic Refer Fan Issue | Good Sam Community

14 Replies

ScottG
Nomad
Sep 25, 2014
Don't let then mess wit the hole in the roof. They're grasping at straws because they don't know how to fix it or whats going on.
YC_1
Nomad
Sep 25, 2014
You have a another bad snap thermistor or it is touching something it should not be. It is designed to run with air temps and not be contacted to something that will dissipate heat quickly.

If your refer is working normally other than the fan cycling access the device and see if they have it screwed to some fin that may cause it to cool quickly.
Old-Biscuit
Explorer III
Sep 25, 2014
IIRC that thermodisc switch closes when temp goes above 100*F and then opens temp drops below 90*F.

If outside ambient air temps are over 90*F then the fan is going to be running constantly

Proper clearances for correct air flow (draft affect) is critical to good cooling unit operation on absorption fridges.

The roof opening being smaller than roof vent and obstructed doesn't sound like the rv mfg. met Dometics installation requirements.

Which model of Dometic fridge.....installation manuals will give max/min clearances & measurements needed.
darsben
Explorer II
Sep 25, 2014
I would be worried about the heat deteriorating the wiring over time.
Why not call the manufacturer and ask them. Could be they took the obstruction into account when putting in the vent.
I would troubleshoot by first putting a good digital thermometer in the went and seeing what the temperature actually is when the fan kicks on.

http://www.eclipservmfg.com/contacts

Forum Discussion

Dometic Refer Fan Issue

14 Replies

About Technical Issues

Related Content

Dometic 2-Way fridge repair issues

Dometic ac/gas refer issue

Dometic issue

Electrical outlet issues

Dometic DM2652 Refer Not Working