Chescold thermostat playing up on gas

Hi All

I've got a Chescold F400 3 way fridge.It works well and will freeze items overnight.
On 240V, it will keep a desired temperature, depending on where you set the thermostat. On gas, the position of the thermostat doesn't matter, as it just keeps chilling- hence it will freeze everything if left running on gas. Even when the thermostat is turned to the off position it keeps running!! Obviously with it like this I have to turn the gas off at night to prevent everything being frozen the next morning, but apart from that it works well.
Before i take it the get fixed, I was wondering if anybody knew what could be wrong. They look pretty simple, yet the parts are expensive, so would rather have a crack at it myself.

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Reply By: Richard Kovac - Wednesday, Jan 21, 2009 at 00:37

Wednesday, Jan 21, 2009 at 00:37
I have a chest type 3 way and the thermostat only works on 240 volt 12 volt will never get cold enough and gas it will freeze every thing.

not sure about all models


AnswerID: 345313

Follow Up By: oldtrack123 - Friday, Jan 23, 2009 at 15:56

Friday, Jan 23, 2009 at 15:56
Some models CHEST TYPE don't have any regulator & certainly will freeze every thing on cold nights.
Others have 240v & gas regulators but not 12v.[HIS HAS]
I ,m not sure if any chest type are fitted for 12v regs.
Uprights often/ usually are [ if late models] fitted with regulator for all sources.
Re comment on 12v , the heater element size [watts] is usually the same for both 12v & 240v. They both will perform the same IF BOTH ARE RECIEVING THE CORRECT VOLTAGE @ THEIR TERMINALS.
The problem is due to undersized wiring, the 12v element rarely gets anything like 12v & of course if used directly from a battery, which is not being charged, will quickly flatten the battery
FollowupID: 613621

Reply By: oldtrack123 - Wednesday, Jan 21, 2009 at 11:14

Wednesday, Jan 21, 2009 at 11:14
Hi ozwasp
3 possibilities as I see it
#1The thermo is faulity, needs replacing/
#2The gas pressure is too high & the pilot flame is thus also too big causing fridge to freeze[ faulity gas reg leaking @ low flow rates or simplty needs readjusting]
Can you see any change in flame size between max & min settings of thermo?
#3 Rubbish has got under seat of regulator valve seat causing it to leak pressure.
#4Rubbish has got under thermo valve seat also allowing it to pass to much gas.
AnswerID: 345338

Follow Up By: ozwasp - Wednesday, Jan 21, 2009 at 13:35

Wednesday, Jan 21, 2009 at 13:35
# 4 seems like a plausible cause. As I said the thermostat works on 240V.

I might try blowing the system out sometime - hopefully do the trick.

Has anyone else got any ideas???
FollowupID: 613314

Follow Up By: Member - DAZA (QLD) - Wednesday, Jan 21, 2009 at 17:11

Wednesday, Jan 21, 2009 at 17:11
Your screen name Ozwasp reminds of the time, a Mud Wasp built a
nest in the Gas line of the Fridge, we couldn't get any gas through
the lines, so when we wern't using it we would tape up the end of
the gas pipe.
FollowupID: 613356

Reply By: Member - DAZA (QLD) - Wednesday, Jan 21, 2009 at 11:18

Wednesday, Jan 21, 2009 at 11:18
I had a problem with a 3x Way Fridge several years ago, similar thing
it kept on freezing up, I replaced the Gas Regulator on the hose
connection, after that it was all good.

AnswerID: 345339

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