Fridgemaster MTRF 226A Compressor always on!!

[freezemerlin]

I have one of these combo fridge freezers that just runs all the time regardless of thermostat position. Ice builds up on the back wall of the fridge part. The unit is nearly 5yrs old, has anyone got the number for a thermostat as that seems to be always closed. ❓

[spimps]

Re: Fridgemaster MTRF 226A Compressor always on!!

If the thermostat was permanently on and your appliance was running correctly the contents of the fridge would be frozen.
You may have one of the following:
compressor, part failure or loss of refrigerant
An engineer would be needed to establish either.

[freezemerlin]

Re: Fridgemaster MTRF 226A Compressor always on!!

spimps wrote:If the thermostat was permanently on and your appliance was running correctly the contents of the fridge would be frozen.
You may have one of the following:
compressor, part failure or loss of refrigerant
An engineer would be needed to establish either.

Thanks for the reply.
The contents of the fridge would be frozen if I allowed the unit to run all day, I turn it off to allow the ice build up to melt then back on! The thermostat is u/s as there is no control over the setting, I was needing the number of a replacement. There is no loss of refrigerant or ice would not occur.

[spimps]

Re: Fridgemaster MTRF 226A Compressor always on!!

Ice would still occur seen the same smptom many many times,it’s actual evaporating temperatures that count.
If the system has a minute loss pressure will be affected,evaporating temperature possibly usually -23c would rise a few degrees maybe to -17c say,will still frost up but doesn’t have the capacity to attain the temp needed to switch off thermostat.
Also the thermostat sensing phial is positioned at the end of the evaporator channel run so a slight loss will still frost up,it also wont switch off,or freeze the food just runs and frosts up,frosting is not a given that it is freezing correctly its temperatures that count.
As I said if it it is not switching off and everything is OK bar the thermostat then contents would freeze,allow to run for 6 hours or so,if lettuce and lower stuff in the fridge starts to ice then i would agree you have a thermostat problem,thermometer would tell you also.Cheapo chinese compressors usually fitted to these which are carp and prone to losing efficency/pressure also.
Trying to help and save wasting your dosh.
If you still want a part number go back to suppliers,Comet,Currys etc or where you purchased it from.

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