if the blower motor still works, somebody probably bypassed the heater core in the past.
my heat doesnt work in my2000 lincoln ls what causes this
could be a sticking thermostat.
Check to seee if it has anti freeze.
it doesnt work, it breaks it doesnt work, it breaks it doesnt work, it breaks
you have a bad electrical connection. Start at you battery and work back through the rest of the car.
If your heat and air conditioner doesn't work on your 1989 Cadillac Eldo and you have install a new compressor, check the thermostat. The thermostat may be stuck close or has gone bad.
Had the same problem myself. Check the ignition feed to the fusebox in passenger footwell.
PB blaster and a sludge hammer. If that doesnt work, heat it up and sledge hammer.
You need to be more specific as to what is not working. The blower doesn't work? No air comes out? Air comes out but is cold?
The headlights on a Jaguar my not work if the bulb or fuse is defective. Alternatively the wiring can be damaged or the switch my have stopped working.
check for a faulty speed buffer module
It is transferred by the energy of photons and heat radiation. Convection doesnt work as there is vacuum between sun and earth.