Haier troubleshooting My freezer will get cold but runs until the high temp sensor shuts it down even if the thermostat is turned all the way down

check thermostat, or relay on one side or back cclose to the compressor area there is a removable lid. removed and look for a thermostat disconect the 2 wires and bridge them then plug the the freezer on if runs replace the temp thermostat for a new one should be freezer thermostat

Check for a small wire sometimes copper color that ends in a small bulb in the refrigerator. Then check to make sure this sensor is not unplugged from its source. This if the thermal sensor that measures temp in the refrig

it could be that your fridge,freezer setting is not turned up high enough to keep the freezer cold enough.turn it up to setting number 5 at least and if that dont do it u could have a faulty thermostat.have it checked by a engineer.

Hi,check that the thermostat is set correctly,if so the it could be the compressor has gone down.

Melt the iced up evaporator with a hairdryer for a temp. fix. The auto defrost system isn't working. I can't find diagrams of yours but here is basically how it works.

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.

What makes a compressor to run constant is the thermostat. Bang on it to see if it will turn off. turn the setting to 1. if it still wont shut off replace cold control (aka thermostat)
worry about the light later hope this was helpful

check the defrost timer but the cold control could be bad

Hello there:
first make sure that the back of the unit is clear of any dirt or obstructions
also make sure that the food is not stacked up so high that the air cannot circulate also you may want to check the temperature setting if the unit does not respond to a lower setting your refrigerant level may be low or than you will have to have the temperature controle thermistor serviced or replaced

thermostat is stuck on! set to medium setting and gently tap stat. does it turn off? it was stuck. does it still run? its still stuck. if you feel comfortable find stat and power in and out. disconnect - it has to turn off then. but 99 % of the time its the stat. they fail closed and run 24 -7 or fail open and temps get real hot and they never close and restart compressor . yours appears to have failed closed. sometimes you can firmly twist em max cold to min cold a few times and break the stuck contacts and they'll do ok for a while. try to reset at a little higher or warmer temp when done so its not making and breaking on the same old worn spot again. good luck.

Sounds like bad cold control. Replace it. I cannot see your repyl due to some tech issue w/ the site, so it may be a day or so before I can reply again. Please leave feedback for me if appropriate. Thanks