I HAVE REPLACE THE TERMOSTAT SESOR AT THE EVAPORATOR AND THE HEATER THERMOSTAD IS OK...
Need more info.
Generally, Hoshi freezers have 2 sensors and a limit in the evap compartment. One sensor is for conditioned space temp, one is for evap temp, and limit if for the heater.
Basically, while in defrost, the controller monitors the evap temp, and when it reaches approx. 70 degrees, the defrost should terminate. The limit kills power to the heater should it get too hot prior to defrost termination. I would first check to see if heater is getting power, if not, check the limit as they go bad frequently. If it is getting power but the defrost termination is happening too early, I would replace the probes first as it is the cheaper route and even if the controller is bad, I would not replace it without doing the probes too. The safety in the controller is usually set for if the unit does not terminate defrost on temp, it will terminate on time, usually 1 hour set at factory specs. Let me know if you need any further help.
SOURCE: Grand am heater works ok but wont defrost
check cable behind dials rod most likely off on that dial.
SOURCE: when i have the heater/defroster on the heater
It sounds like you have a blend air door stuck. This is in the housing of the heater a/c blower unit under the passenger side of the dash. There is a motor on the top of the housing that could possibly be stuck or on working.
SOURCE: heater/defrost control knob
Here's the wiring diagram of the manual AC controls. I suspect the problem is in the 'mode' switch/motor.
SOURCE: 2004 Impala rear window defroster not working
the 30 amp breaker is behind the fuses ....u have to take the glovecompartment out and pull the whole fusebox out if ur hands r too big ....the power seat circuit breaker is there 2
nab
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