The air conditioner smells like freezer burn help

have an accredited ac shop as an ac cannot produce hot air only cold air so that means that the ac is not working (leaks low on gas etc). The hot air is from the heater in the car and the smell is probably wire overheating or the resistors are burning.

do you turn on fan when using a/c ! if so heres a few causes-- burning smell in car, blower motor is going bad, or resistor is burning up.the resistor controls the fan speeds. good-day !

The burning smell could be due to gas leakage in the engine compartment. The gas smell is being sucked into the fresh air intake of the air conditioner. It can be avoided by checking either fuel pressure regulator or fuel injector.

is it a burning rubber smell or a burning eletric smell. burning rubber smell will be a slipping belt. replace the belt and pullys. tighten belt. electic smell will be a bad thing. have tested by technition

Two units, same plug, burning smell ... hire an electrician to check your wiring

Ice probably formed on the outside of the unit and the a/c is working to defrost itself. Check out this page: http://andysair.blogspot.com/2010/01/looks-like-smoke-is-coming-out-of-my.html

A burning smell could indicate an electrical problem (something overheating) or, if the unit has electric strip heaters that have not been energized for a long time, the buring smell could be the dust burning off of the heaters.

Try cleaning the filter or replacing the filter

Sounds like your blower motor in your furnace or air handler has burned up. shut the unit down and replace the motor. make sure the ice is melted and the unit is dry before you turn it back on.

Since you have a knob, I am assuming that this unit has manual controls that are mounted directly below the air conditioner on a ceiling pack. If you smell burned wiring, remove the inside shroud to access the 120VAC connections in the unit. Check these connections for OK, if they look burnt, cut them back and reattach them (be sure to turn the breaker off first). Try the AC again.

If those connections look fine, then remove the upper cover from the unit. Access the capacitors on the side of the unit and check them for ok. If any one of them looks burnt, replace it. These two places are usually the only place that you will get a burned plastic smell.

Hope this helps,

Jeff

Not sure what the smell...smells like.  My guess is dirt or dust near the heating elements.  These will cause a burning smell.  Sometimes insects even get into the act..building webs.
You will have to clean that area out...sometimes a large blower or vac can dislodge the dust.