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 Topic: How can i fix my fridge
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25/2/2010 at 10:10am
Location: Stafford
Outfit: ABI Manhatten
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Quote: Originally posted by wizard9956 on 24/2/2010
I did read something about the knob ( dial ) not being able to be pushed in fully to engage the thermocouple .
Or something like that , may be worth a quick check of the knob .
atb
Wizard
Thanks wizard
I removed the front facia so i could push the gas dial all the way in but still no joy. Thanks for the suggestion though. Any ideas who could fix it for me and how much do you think i'm looking at if it is the thermo coupling.
Post last edited on 25/02/2010 10:16:46
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25/2/2010 at 10:38pm
Location: None Entered
Outfit: http: www.arcsystems.biz
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I would have expected the knob to be the problem, simply setting it in the lighting position and then pulling the knob off and pushing the spindle in on it's own while lighting the flame, proves if it's the cause or not.
If not then it's possible the 8mm gland nut holding the thermocouples cold end into the gas valve is loose, or if not loose, unscrew it and pull out the tip and clean it, once screwed back in and nipped up this often gets them working. (see explanation of how it works below)
If all that fails, then it's the hot end in the flame at fault, this could be lack of maintenance or in very rare cases the thermocouple actually needs replacing.
This really needs to be done by someone who knows just how it should be so it works perfectly, and not just gets it barely working again!
When heated by the flame, thermocouples produce a tiny amount of electricity this is then used to energises an electro-magnet.
When the knobs pushed in, it holds a piece of iron in contact with the magnet, once energised it grabs the iron and holds the the gas safety valve open when the knobs released
When the knob hits the fascia first before the iron makes contact with the magnet, or the tip of the thermocouple is not making a good electrical connection, then the magnet cannot grab the iron so the valve will always shut when you let go.
Thwack, your mixing up thermocouples with thermostats? it's the Thermostats on fridges that work in the way you describe
Post last edited on 25/02/2010 22:51:26
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