Is this a FIRE hazzard???

[blackbetty]

A few years back someone posted that a A/C evaporator core can and will ignite the dead leaves in a heater box.

I just bought a 1973 Charger and a previous owner disconnected the refrigerant lines from the compresser to the evaporator core.

I was testing the heater to see if the heater core leaked and I saw smoke pouring form the A/C vents. The way the Charger/Cornonet contol switch is designed, you have to pass through A/C and max A/C before you can select heat or vent

So I wanted to know if i selec A/C or Max A/C, if I'm in fact powering the evaporator core the and if I almost started a fire?

Until I reinstall A/C, I just want the heat to work
Is there any way to have the heater work and not provide power to the A/C?
Very Respectfully
Vic

 

[440roadrunner]

An evap can NOT produce heat. The only heat source in a heater / A/C system is the motor(s) and the heater core itself. I cannot see the heater core generating enough heat to ignite anything?????

Are you sure this was smoke and not steam from a leaking heater core?

 

[RustyRatRod]

The evaporator core and heater core are NON powered units. They both change air temperature as the air flows through each one. The only thing I could think of might be the blower resistor if some debris got around it. They do get rather hot, but their position is such that it is usually located high up in the HVAC box.

 

[Sixer]

Yep, blower motor or blower resistor.

 

[440roadrunner]

the blower resistor

I don' know how I spaced that out!!