3 replies to this topic

[Kevee]

Hello,

I wonder if anyone can help, my 06 reg KA has been blowing out hot air no matter what temperature the temperature dial is set to. It is a nightmare on the rare hot days we have :-)

I have used a multimeter on the plug going to the heater control valve, I got different readings depending on where the dial was set to, including a pulsing for mid-range. This prompted me to go out and get a new OEM heater control valve thinking that was the part that was faulty. I have replaced the valve and once the engine heats up I am still getting hot air no matter where the dial is.

Can anyone shed any light on where the problem may be?

[btmaldon]

Sounds like the replacement HCV is faulty. If you are getting changing voltages between 0 and 12v when you turn the dial between hot and cold, it can only be the HCV or the connection to it.

I would take it out and see if you can get the solenoid work. When set to cold it should be closed and the voltage should be circa 12v . Hot it will be open and at 0 volts.

[Kevee]

Thanks, it is good to know I am not going mad by thinking that the panel was working by sending the varying voltages. Maybe I should take it out and replace with a genuine ford one and try and get my money back.

[btmaldon]

After market ones do have a habit of failing. The Ford one is only about £40 anyway.

Good luck with it.