3 way fridge - gas won't light

I have an Electrolux 3 way fridge in my Jayco Swan. The gas will not light. I have checked in the back of the fridge and there is spark and there is gas but the flame does not light.
I believe gas is flowing to the fridge. The stove burners are lighting and I unscrewed the nut near the burner tube and there was gas flowing out.
I have not cleaned it out and will do this, but there should be some flame shouldn't there?
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Reply By: Member - wicket - Wednesday, Mar 05, 2014 at 21:29

Wednesday, Mar 05, 2014 at 21:29
I had a problem that sounded just like this, turns out an earth wire had come loose somewhere near or in the bottom of the flue, some disassembly was necessary not done by me but a fridge mechanic.
AnswerID: 527733

Reply By: Member - Charlie M (SA) - Wednesday, Mar 05, 2014 at 21:34

Wednesday, Mar 05, 2014 at 21:34
Hi
Is your in line gas tap turned on to the fridge. ??

Charlie
AnswerID: 527734

Reply By: Member - Rosco from way back - Wednesday, Mar 05, 2014 at 22:05

Wednesday, Mar 05, 2014 at 22:05
Dirty jet? May be the problem disrupting the flow so it won't maintain the correct burn.
AnswerID: 527736

Follow Up By: Ross M - Wednesday, Mar 05, 2014 at 22:15

Wednesday, Mar 05, 2014 at 22:15
Could also be the selector hasn't quite turned the gas cock on in the valve, hence no gas out to light.

I wonder if he has the spark visible?
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FollowupID: 810154

Reply By: SDG - Wednesday, Mar 05, 2014 at 22:31

Wednesday, Mar 05, 2014 at 22:31
How much gas in the bottle???? I had the same problem. Enough to use stove, not enough to run fridge. Person who refilled bottle said common problem. How, I don't know. Pressure is all I can think of.
Either way, once I refilled bottle, fridge lit first go.
AnswerID: 527737

Follow Up By: jaycoswan99 - Wednesday, Mar 05, 2014 at 22:38

Wednesday, Mar 05, 2014 at 22:38
New bottle. Filled up and hardly been used.
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FollowupID: 810161

Follow Up By: SDG - Wednesday, Mar 05, 2014 at 22:41

Wednesday, Mar 05, 2014 at 22:41
I'm assuming you are level?
Can take a little time to build up pressure in the line to fridge, or so I have been told.
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FollowupID: 810162

Follow Up By: jaycoswan99 - Wednesday, Mar 05, 2014 at 22:49

Wednesday, Mar 05, 2014 at 22:49
No, not totally level. On a small hill. There is gas coming through, though because I undid a nut in the gas line close to the outlet and the gas was flowing out.
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FollowupID: 810164

Reply By: jaycoswan99 - Wednesday, Mar 05, 2014 at 22:36

Wednesday, Mar 05, 2014 at 22:36
I have spark over the burner. The gas is coming through. No flame. I don't know the technical names of parts - but here goes. It would appear that the gas is not getting to the burner where the spark is. It is getting close but probably is not blowing across the gap from the jet to the burner tube.
Simon
AnswerID: 527738

Reply By: jaycoswan99 - Wednesday, Mar 05, 2014 at 22:45

Wednesday, Mar 05, 2014 at 22:45
I think I know where the jet is. Will try cleaning it out.
AnswerID: 527739

Reply By: John B1 - Wednesday, Mar 05, 2014 at 22:46

Wednesday, Mar 05, 2014 at 22:46
drive past the petrol station and pump some air true your exaust
maybe just a bit of dirt stopping from lighting up

Cheers John B1
AnswerID: 527740

Follow Up By: jaycoswan99 - Wednesday, Mar 05, 2014 at 22:55

Wednesday, Mar 05, 2014 at 22:55
Do you mean the exhaust outlet for the fridge flu, that comes out in the vent at the caravan's side.
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Reply By: Member - Michael P (QLD) - Wednesday, Mar 05, 2014 at 22:52

Wednesday, Mar 05, 2014 at 22:52
Try running the stove or another gas appliance if that is closer to the fridge. I have found that is the quickest way to get rid of an airlock.
Mike.
AnswerID: 527741

Reply By: Member - Bruce C (NSW) - Thursday, Mar 06, 2014 at 07:55

Thursday, Mar 06, 2014 at 07:55
If you have replaced the bottle and the system has not been used for a while then more than likely there is air in the lines. Nothing will light till this air is purged and pure gas is coming through. This may be the problem.

To purge the gas lines merely attempt to turn the stove on, something that is easy to get to and very visible, Keep trying till the stove lights. This then indicates that the line has been purged of air.

Now try and light the fridge but be prepared to try for a couple of minutes as your gas line layout may mean there is a lengthy run to the fridge and that line might need some purging also by continually attempting to light the fridge, till it does light. If no success after around 5 minutes then look for other causes.

Get someone inside the van while you are outside near the bottom vent and then get them to press the gas start button (over-ride button) while you listen to hear if gas is coming out. If the gas flows when the button is pressed then it should light provided that there is nothing wrong with the lighter. To check if it is the lighter remove the cover from around the pilot and try lighting with some other source such as a gas lighter.

Even if it is the thermocouple is faulty it will not stop the gas from lighting in the normal way while you are holding in the start button (thermocouple over-ride).

The thermocouple is the probe which sits in the flame and, once hot, merely produces a very small current to keep the gas valve open. No heat on the thermocouple and the gas valve closes. This is the safety device.

Cheers, Bruce.






At home and at ease on a track that I know not and
restless and lost on a track that I know. HL.

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AnswerID: 527746

Follow Up By: jaycoswan99 - Thursday, Mar 06, 2014 at 22:48

Thursday, Mar 06, 2014 at 22:48
Thanks. I will try this.
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Follow Up By: jaycoswan99 - Thursday, Mar 06, 2014 at 23:04

Thursday, Mar 06, 2014 at 23:04
Bruce, you mentioned a faulty bypass button. What is this and where is it?
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FollowupID: 810259

Follow Up By: Member - Bruce C (NSW) - Friday, Mar 07, 2014 at 08:03

Friday, Mar 07, 2014 at 08:03
The bypass button is the one you press to get the pilot to light.
How it works is this, there is a device called a thermocouple or thermopile and its function is to shut off the gas when the pilot flame goes out. This is the safety device.

The button you press to get the pilot light going is a bypass to this thermocouple. You hold in this button till the little gauge on the fridge shows the needle going into the green section. What this is doing is allowing the flame to stay on till the heat has generated enough current in the thermocouple to hold the special gas valve open. We are talking a very small current here, something like 400 milliamps.

Now, what this means is that if you can get the pilot to light when holding the button in then there is nothing wrong with the gas supply however, if it will not stay alight then there are a few possibilities.
The first is that the thermocouple probe is not in the flame thereby not getting hot enough to generate current to hold the valve open
or............ the thermocouple needs replacing or........ perhaps there is an earth problem as stated above by one of the other responders.

There may be other causes but these are the ones that first come to mind.

The wasps in the flue problem, I've had that a few times, will only cause the fridge to not get cold as the heat flow up the flue is disturbed and does not function properly.
In this case the pilot flame will light and run properly but the fridge will not get cold. I recently had a wasps nest in the nephews van fridge which was out of sight, we had the fridge out and cleared the flue pipe but the fridge still did not work.

Eventually found a wasps nest just above the flame which was sending the heat everywhere but up the flue. This was only accessible from the back of the fridge while in situ and only then by removing the pilot cover plate and probing with wire.

Best way to avoid this is to make some cardboard covers for the fridge vents and keep them in place till you hit the road. Once the system is hot the wasps won't go near it anyway, besides, they are seasonal anyway.
Hope this helps.

Cheers, Bruce.
At home and at ease on a track that I know not and
restless and lost on a track that I know. HL.

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Reply By: Shaker - Thursday, Mar 06, 2014 at 08:07

Thursday, Mar 06, 2014 at 08:07
Check the flue for mud wasp or spider nests!

AnswerID: 527747

Reply By: tazbaz - Thursday, Mar 06, 2014 at 09:26

Thursday, Mar 06, 2014 at 09:26
I've had exactly the same problem with the Dometic fridge on my Jayco Eagle outback. Turned out that the small pipe that directs the ignition spark onto the gas was out of alignment. An adjustment with a pair of needle nose pliers will fix it.
AnswerID: 527753

Follow Up By: jaycoswan99 - Thursday, Mar 06, 2014 at 22:49

Thursday, Mar 06, 2014 at 22:49
Thanks. Will try this.
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FollowupID: 810255

Reply By: Razerback - Thursday, Mar 06, 2014 at 19:26

Thursday, Mar 06, 2014 at 19:26
What about the old age cure these types of fridges are famous for? Turn the fridge upset down (Disconnected) and leave overnight, try connecting up and doing it again. Correct me if I am wrong these fridges are notorious for not starting after a long sit on the shelf? These gas fridges often behave like an outdoor patio heater that hasn't been used for a while, dirty jets, who knows..?
AnswerID: 527782

Follow Up By: Shaker - Thursday, Mar 06, 2014 at 20:00

Thursday, Mar 06, 2014 at 20:00
That is for fridges that are running but not cooling!

The symptoms sound like a blocked chimney/flue, usually by mud wasps.

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FollowupID: 810243

Follow Up By: Member - Bruce C (NSW) - Thursday, Mar 06, 2014 at 21:22

Thursday, Mar 06, 2014 at 21:22
I think he is having problems getting it to light as opposed to not getting cold.
It could be a faulty bypass button or a blocked pilot jet, then again it may be the gas needs time to come through.
At home and at ease on a track that I know not and
restless and lost on a track that I know. HL.

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Follow Up By: jaycoswan99 - Thursday, Mar 06, 2014 at 22:53

Thursday, Mar 06, 2014 at 22:53
Thanks fellas. I will try these. And see how I go.
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