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Questions & Answers
Compressor will not start
Take and close down the suction valve on the compressor and then try to start the unit after you recover some of the refrigerant out of the compressor the reason that it is acting like that is probebly because the compressor is full of refrigerant and slugging the valves. also verify the you have all the lesgs of power going to the unit. let me know how this turned out.
Master Bilt 95...
on Dec 25, 2008
Where can get parts
Hello, here is some places to get parts. Just copy and paste links in your browser.
I hope this helps, mike from fixya
on Sep 14, 2011
MASTER BILT FREESER M.N. THC27
The evaporator coil behind the cover on the back wall inside the freezer will ice up under normal conditions. Every 8 to 10 hours for around 20 minutes the defrost timer (or in most newer models the electronic adaptive defrost control) will turn the defrost heater on to melt the built up ice. There is a defrost thermostat which prevents the heater from overheating the freezer by breaking the heater circuit when the temp reaches close to 32 degrees F. The entire cooling system shuts off during the defrost cycle and starts back when the timer advances through the cycle.
If this ice is not melted it will continue to build up until the air can't flow over the coil to circulate the cold air through the freezer and into the fridge. The temperature change in the fridge is usually noticed first followed by the freezer.
If the defrost thermostat is bad, it can prevent the heater from coming on OR it won't turn the heater off when it gets too warm. It is clamped to the evaporator coil at the top to sense the temp. If it appears to be misshapen it is bad.
With an ohm meter it should show continuity when cold and none when warm.
You can also bypass(disconnect the two wires plugged into it and twist them together) the thermostat to see if the heater comes on then. If it does then you know the thermostat is bad and needs replaced.
The defrost heater is located on the evaporator. It is in a tube which is at the bottom and can also go up the sides of the evaporator. On some types you can see a burnt spot if it's bad. With an ohm meter it should show continuity from end to end when disconnected from the wiring in the freezer. You can also test the wiring for voltage when it's in the defrost mode.
If you have a defrost timer you can test it. It can be located under the fridge behind the kick panel on the front. Some are in the fridge with the controls at the top. You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer because that means the timer is not running. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.
If you have an adaptive defrost control instead of a timer, replace it if the heater and thermostat test good. It is located in the fridge with the controls in some models and on the back in others.
You can post your model number into one of several appliance parts sites on the internet and search for defrost components to find your parts.
on May 12, 2011
Its not freezing is there
There is no switch along the lines of like a button or light switch. There is a thermo switch that opens and closes from the temp. If the compressor is running then its either a blockage or or leak in freon. You could use an amp meter and check the draw. Look on the manufacture sticker for the running amps. If your getting much more the double then it blocked. If the compressor is running and your amps are below 1amp its a leak and needs to be addressed by someone EPA certified.
on Jan 30, 2011
Why is my green light on on my freezer
Green light usally means that the freezer is in good working condition. Red light means the door is slightly open and wasn't shut properly. Sometimes the seal on the door has gotten old or twisted.
on May 11, 2019
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