July 3, 2012, 11:07 am
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?
July 3, 2012, 12:29 pm
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.
July 3, 2012, 1:24 pm
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.
July 3, 2012, 3:34 pm
After market ones do have a habit of failing. The Ford one is only about £40 anyway.
Good luck with it.
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