3 way fridge won't turn on at all...

Submitted: Tuesday, Sep 17, 2013 at 21:57
ThreadID: 104369 Views:2249 Replies:7 FollowUps:7
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hiya. We have a Dometic RM 2350 fridge which has been working fine up until now. We went to use it last weekend and couldn't get it to turn on using gas/12 or 240volt. Couldn't even hear any gas coming through when we tried the gas option. I don't know much about these things, but just wondering if there are any simple checks I can do before I call for a refrigeration mechanic? Fuses? Switches? We're still getting to know our camper (Jayco Dove outback 2006) and so accidentally drained the battery fully after the last trip...
Any help would be appreciated - school holiday trip coming up next week!!!!
ta,
lebella
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Reply By: Member - LG__ (WA) - Tuesday, Sep 17, 2013 at 22:10

Tuesday, Sep 17, 2013 at 22:10
Does the owner's manual have a troubleshooter at the back?
That should suggest what to do if you aren't getting any response at all ... shrug
AnswerID: 518328

Follow Up By: lebella - Tuesday, Sep 17, 2013 at 22:24

Tuesday, Sep 17, 2013 at 22:24
yes have checked...only mentions fridge not cooling properly - no mention of not turning on at all...
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Reply By: Member - Frank P (NSW) - Tuesday, Sep 17, 2013 at 22:49

Tuesday, Sep 17, 2013 at 22:49
Lebella,

I just read on Kulkyne Kampers website that it's electronically controlled. I have read in another thread on this forum about related matters that this means it needs a 12 volt supply before it will do anything - ie it won't operate on 240 or gas unless it has a good 12V supply. The electronic control system depends on 12V being available. If I am correct and your battery is flat that would explain it.

Charge your camper battery and try again.

Cheers
FrankP

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AnswerID: 518331

Follow Up By: oldtrack123 - Tuesday, Sep 17, 2013 at 23:48

Tuesday, Sep 17, 2013 at 23:48
Hi Frank
The RM2350 is not AES
Simply manual select.
PeterQ
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Follow Up By: Member - Frank P (NSW) - Wednesday, Sep 18, 2013 at 14:07

Wednesday, Sep 18, 2013 at 14:07
So much for that theory :-(

Thanks Peter
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Reply By: oldtrack123 - Wednesday, Sep 18, 2013 at 00:01

Wednesday, Sep 18, 2013 at 00:01
Hi lebella
That is a mystery
As you say it has been working ok

No fuses in the gas line!
A flat battery should not affect the 240V !
no fuses in the fridge
You could check the power socket with some other 240V appliance

12V is totally independent of 240V or gas but should only work [if wired correctly] when connected to vehicle & with engine running & does not go through the thermostat

But it could be the thermostat, it is common to both the gas & 240v
Select 240V
Try moving thermostat from one extreme to the other a few time
while on 240V THEN FULL "ON "wait for 30Mins then check if any heat is coming out the back.
If heating , try again with "gas" selected& thermostat full "on"


PeterQ
AnswerID: 518337

Follow Up By: Member - LeighW - Wednesday, Sep 18, 2013 at 09:21

Wednesday, Sep 18, 2013 at 09:21
The earlier model RM2350 also had the 12V wired through the thermostate, well at least the one I changed in my Finch a couple of years ago did.

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Leigh

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Follow Up By: oldtrack123 - Wednesday, Sep 18, 2013 at 12:40

Wednesday, Sep 18, 2013 at 12:40
Hi Leigh
Perhaps you have the model number wrong,possibly you are thinking of RM2310
RM2350 do not have thermo control on 12V & never have as far as I am aware

One of the reasons ANYone asking questions regarding Dometic fridges SHOULD be sure to quote the EXACT model number

Like oils, all 3way fridges are not the same!!

PeterQ
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Reply By: Member - LeighW - Wednesday, Sep 18, 2013 at 09:27

Wednesday, Sep 18, 2013 at 09:27
I damaged the thermostat in my fridge shortly after fitting a new one, wasn't all my fault though, the thermostat bulb that attaches to the evaporator in the fridge part had not been positioned properly and when I removed the shelf or something around that area (can't quite remember exactly) to clean it, it nicked the aluminum tube for the thermostat bulb. As soon as I heard the hiss I knew I was in trouble:(

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Leigh

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Follow Up By: Beergutz - Wednesday, Sep 18, 2013 at 22:52

Wednesday, Sep 18, 2013 at 22:52
That hiss you heard would have been the gas escaping out the little nick you put in the pipe , no gas equals no cold fridge !
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Follow Up By: Member - LeighW - Thursday, Sep 19, 2013 at 09:32

Thursday, Sep 19, 2013 at 09:32
Yep, and after forking out for a new thermostat no money to buy beer:(

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Reply By: glids - Wednesday, Sep 18, 2013 at 09:30

Wednesday, Sep 18, 2013 at 09:30
You say the fridge had been working fine, but have you run it on ALL THREE SOURCES (gas, 12V and 240V) before?

For Gas: Do you know the procedure for running on gas - hold one button in while clicking the starter button, and keep the first button depressed until the gauge shows the fridge is working. Also, for gas operation, check that the gas isolation valve under the floor is turned on - and obviously, have the gas cylinder turned on.

For 12V: Most fridges will not (should not) run from the on-board (house) 12V battery, only from a link to the tow vehicle. This is because the current drain from the fridge is too high (approx 14 Amps) and will quickly flatten a house battery. So to run off 12V, you probably will have to have the vehicle connected, and probably running.

For 240V: 2 weeks ago we had a 240V element on an RM2350 fridge die - burnt out. It seems that this is common, and 240V elements may only last 12 months. It is possible this is your problem on 240V, but unless you know what you are doing it is not something you should play around with to check.

All three: We had trouble a couple of years ago with the selector switch (gas/12V/240V) not connecting properly, so you could try rotating it through the complete range of rotation a few times.

good luck
glids
AnswerID: 518349

Reply By: Member - fawkesp - Wednesday, Sep 18, 2013 at 09:41

Wednesday, Sep 18, 2013 at 09:41
Lebella,

We had a similar problem with our Dometic, worked one day then not the next. We finally tracked it down to a faulty gas regulator near the gas bottle.

Have you checked to see if you are getting gas elsewhere? to the stove for example(assuming it is also gas)?

Peter F.
AnswerID: 518350

Reply By: oldtrack123 - Thursday, Sep 19, 2013 at 20:16

Thursday, Sep 19, 2013 at 20:16
HI leabella
If the thermstat fails ,iit usualy fails safe
That would cut the 240 to the 240V heater


With the gas .it will also turn 'to low flame
due to the flame not being able to light with the very small gas fow through the small by pass jet that maintains a pilot flame the safety "gas shut off" valve will not open.unless you hold the gas button in
But even then the gas flow will usually be insufficient to light due to the thermo failing safe

That still leaves the question of 12V operation , which should require connection to a vehicle with the engine running[IF it has been wired correctly] have you actually tried that??

It would need a long run before you would notice any cooling in the freezer section
THAT is the section that will get cold first


PeterQ
AnswerID: 518446

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