dedwards
regular
Reged: 12/09/2003
Posts: 312
Loc: N Hampshire
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I have a waeco cooling kit installed along with a 240v->12v transformer but it has completely stopped working. I'm trying to work out whats wrong with it but have run out of ideas.
No matter what I do, there is absolutely no sign of life.
I've disconnected the power terminals and measured over 13v at them (using boat batteries and shore power), i've replaced the thermostat control with a manual switch and disconnected the fan but still no life. I've also wired up an LED which supposedly gives diagnostic flashes but again no life. Assuming that the electronic module was dead I sent it off to Dometic who returned it saying theres nothing wrong with it so now i'm stumped.
the electronic module is model no 101N0200.
Any ideas what else I can try?
Is it possible to remove the compressor without specialist tools so I can test it at home/ send it off to be checked?
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steve28
regular
Reged: 19/05/2003
Posts: 761
Loc: Cornwall
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have you tried measuring the input voltage when its connected to the fridge, if it remains the same when the fridge is turned on and the module has been tested then it has to be the compressor. They do fail but its quite rare. maybe its gone past its heeling angle and come apart inside.
The compressors are still available and it can be removed with some spanners, all going well it wont leak past the self sealing couplings.
steve
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fontmell
regular
Reged: 05/11/2004
Posts: 63
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mine went recently, £100 for new control module basically if there is power and you bridge the thermostat thats all it can be
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dedwards
regular
Reged: 12/09/2003
Posts: 312
Loc: N Hampshire
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I havent checked the voltage while connected to the fridge so will do that. Though I do have two separate power sources so I'm reluctant to blame that.
I am leaning towards the idea that the compressor is dead but that doesnt explain why I couldnt get the LED to light up as that is supposed to indicate compressor issues.
The only other explanation is that Dometic got it wrong about the control module being ok - but that also sounds pretty unlikely.
At least I now know I can remove the unit and get it sent off, thanks.
Any further suggestions still welcome....
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skipper_stu
regular
Reged: 24/02/2003
Posts: 2183
Loc: North Wales
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just for info to correct an urban myth, the compressor consists of a little piston/pistons running just like an ordinary compressor, they give up the ghost because they wear out, just like an engine, heeling angles have nothing to do with it, this myth comes from the days of ammonia filled systems when if you tilted it the liquid got in the wrong place and it stopped working. To get back to the question, the compressor is probably shagged, try to bypass the controller and apply voltage direc to the compressor terminals and see if it starts.
Stu
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http://www.beneteau-owners-association.org.uk/toast/toast.asp
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Morgana
regular
Reged: 28/08/2003
Posts: 12220
Loc: East Coast
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Woah!
Are you sure about that?..... Some compressors use an AC current..... thats what the control box does?
Connecting a DC source to it won't help at all..... and may well finish it off.... at least that's what I was led to believe....
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Bored?.... why not read my blog .... its the developing story of the trials and tribulations of boat ownership!
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MarkJohnson12345
regular
Reged: 23/12/2004
Posts: 686
Loc: Wales UK
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Not quite the same unit, but simialr problem.
The actual compressor is run by a electrical (onic) box.
Its connected by a several wires, 12v supply, the thermostat switch, and power to the compressor.
Long way round to saying that the electrical box was U/S, and easily if not expensively replaced (160 squids)
Your unit might not be the same tho......
Weaco were fairly helpful when rung up.
Phone number is on the web somewhere.
Good luck
MJ
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Mark Johnson
www.markjohnsonafloat.org.uk
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Billjratt
regular
Reged: 09/09/2004
Posts: 863
Loc: Prestwick
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I don't believe the pump will be worn out on a boat fridge. Think about the fridge/freezer that's been in aunty Mauds house for 20 years without stopping, although it's getting noisy... Morgana's right, If I remember the pump runs on AC at some odd frequency (400cps?) Anyway, sticking a battery across it won't help. The Waeco system doesn't self-seal, so if you take it to bits, you will need to send the whole lot back to get it recharged ( unless you can source a local engineer with the vac pump etc.) If you have a "mobitronic" power supply, the battery volts go though it to the compressor (via internal relay) and become 24v when you're on shorepower. You must, therefore, measure at the push on connectors on the controller to see what's really happening (with the fridge switched on and turned up). If it has a fan, does that start? ( or the pump if it's water-cooled). (different part of the controller)
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Norman_E
regular
Reged: 15/03/2005
Posts: 5059
Loc: East Sussex (near Kent border)
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If the pump runs on AC, does it have a capacitor to start it? If so it could be a blown capacitor that is stopping it from running. If I remember correctly capacitor start AC motors have more starting torque than other types, and are therefore the logical choice for a motor which is directly coupled to a compressor and has to start against load. My own fridge compressors are not Waeco make, but I think both have starting capacitors.
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Smile at us, pay us, pass us; but do not quite forget,
For we are the people of England, that never has spoken yet.
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Rogershaw
regular
Reged: 03/11/2001
Posts: 1317
Loc: Me: Johannesburg South Africa ...
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Most 12VDC fridges use Danfoss compressor
Have a look here
There is also a DIY forum here
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