It may be caused by three reasons: the thermostat is normally open or the thermostat is opened too early, the heater water tank is clogged, or the heater valve is faulty.
The heater is not hot in crv24 four-wheel drive manual:
1. It may be that the thermostat is normally open or the thermostat is opened too early, causing the cooling system to perform a large-scale operation prematurely. circulation, but the outside temperature is very low, the engine water temperature cannot rise, and the warm air will not heat up.
2. The heater water tank is clogged: The car heater water tank can actually be regarded as a reduced version of the engine water tank radiator. Its internal structure contains many small heat dissipation pipes. This kind of structure is just like the water tank radiator, which is prone to internal blockage. After it is clogged, the flow rate of the coolant inside the heater water tank will slow down, the flow rate will become smaller, the heat supply will be insufficient, and the air conditioner heater will naturally not be hot.
3. Warm water valve failure: After the warm water valve fails, the opening of the electronically controlled valve is no longer controlled by the computer and is in a normally open, normally closed or fixed position. At this time, the warm air valve If there is no coolant flowing through the tank or the flow is not controlled, the temperature of the air-conditioning warm air will naturally be out of control.
You can start the engine and drive normally. After preheating for a period of time, wait for the water temperature gauge temperature pointer to reach the middle position, then turn on the heater, and at the same time set the air circulation to external circulation to let the cold air out of the car first. Externally, adjust to internal circulation after 2-3 minutes, so that the interior of the car will warm up in a short while, and it will not put a burden on the engine.