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Mark
Mark, Technician
Category: Car
Satisfied Customers: 1504
Experience:  Qualified City & Guilds
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I have no heat coming through the heater. The water is full

Customer Question

I have no heat coming through the heater. The water is full in the engine and the blower is working, just no heat, can you advise please?
Submitted: 4 years ago.
Category: Car
Expert:  Mark replied 4 years ago.

Hello.

 

Possible causes of no heat are an air lock in the heater matrix, a blocked heater matrix, faulty thermostat or faulty waterpump.

 

If the hoses to the matrix are both getting warm and water can flow through the matrix then there could be a fault with the flaps inside the heater box.

 

Mark.

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