What are the reasons why a van's air conditioning does not produce heat?

[DiKate]

The reasons why a van's air conditioning does not produce heat are: 1. Lack of coolant; 2. Internal blockage of the radiator; 3. Damage to the water pump impeller; 4. Air lock in the engine cooling system. The solutions for a car air conditioner not heating up are: 1. Add or replace the coolant; 2. Clean internal debris from the radiator; 3. Replace the water pump impeller; 4. Replace the cylinder head gasket. The functions of car air conditioning are: 1. Drawing in fresh external air for ventilation and air exchange, preventing window fogging; 2. Removing dust, odors, smoke, and toxic gases from the car's interior to freshen the air, and humidifying the car's interior air to increase relative humidity.