Running fine but blowing warm air

There are more than reason: first check the fan in the upper part of the freezer (you have to unscrew 3 bolts of the cover),second check the freezer door sealing,third is to check that the cooling tubes inside the freezer are cold enough without heavy snow (you have to unscrew about 6 bolts of the cover),Heavy snow reduces cooling and it means that the timer is not working or the heater is not working.I hope to help you in reform

Sounds like one or more of ofvyour 3 defrost components have failed which are defrost heater , defrost thermostat, and defrost timer or board

Hi,
You have a defrost problem and will need to thaw out your freezer to change the one of the bad parts and restore air flow. The other bad part is PCA (this is a control of defrost and compressor run). First bad part is a defrost thermostat link under bad and the other is the PCA which controls the defrost cycle. Unplug unit, de-ice the freezer and this will buy you time to get parts, I don't like the use of blow dryers but people use them in this case. Watch the heat, is can warp the plastic.
Good Luck

I’m happy to help further over the phone at https://www.6ya.com/expert/gere_bf68e6055dd61249

Two thoughts. If the fan is running... and you can here it in the freezer when it is on. Then the fan is fine and it is the mixer control. IF the fan is not working, then fix the fan.

The mixer control is in the top of the fridge where the air comes out on the wall between the fridge and freezer.

I think maytag calls this a cold control / damper.

Basically it controls the air flow rate between the fridge and freezer. When it is opens it allows air from the freezer into the fridge and cools it off.

Hope this helps.

sounds like compressor has failed remove the fridge and put your hand on the black unit at the back (compressor) it should be quite warm if running if not its not starting compressor are at there most stress when starting up and if failing this defrost may have killed it completely

One you can to try and extend the life of the fridge is to vacuum off the compressor and coils. They can be located either behind the toe grill on the bottom front or through an opening on the back of the fridge. It is natural for a fridge to blow warm air.

The fridge gets its cold air from the freezer through a vent(damper) between the freezer and fridge.The fan in the freezer blows air through it. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp ..
If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control.
How to check everything
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php

if your fridge has 2 set of dials one numbers and the other letters than you need to adjust the dial that has letters on it. If the fan in your freezer is not blowing, then it won't force the cold air from the freezer to the fridge. Make sure fan blows then adjust the letter knob.

I had similar problem in that the fan in the freezer that blows freezing air into freezer and over to fridge was not working. Fridge was running warm (over 40 deg and freezer up near 20) Service call around $160 with new fan.

IF THE FAN ISN'T RUNNING, CHECK IT FOR AN OBSTRUCTION. IF NO OBSTRUCTION, AND YOU HAVE A METER, CHECK FOR 120 VOLTS AT THE FAN MOTOR TERMINALS. IF 120 VOLTS IS PRESENT, REPLACE THE MOTOR.