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  #11  
Old 01-18-2023, 02:37 AM
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It sounds like the IHKA might be turning the heater valve off for some reason. I asked about the sensor/fan because if that isn't working it could be that the IHKA is sensing heat from inside of the module instead of the car interior. It's unlikely there is a wiring problem at the heater valve because it's normally open but would be good to double check all that. Did you happen to check the coolant flow at the top of the tank with aux pump running and heater valve unplugged? I would double check the work you have done and then the quickest/easiest thing to do next might be to replace the IHKA.

Is it possible that you actually miswired the heater valve to another circuit?? Did you just replace a wire at a time or rip everything out and start from scratch?

When you were checking this initially you had the IHKA set at highest temp for full heat right?
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  #12  
Old 01-18-2023, 05:46 AM
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Quote:
Originally Posted by TC2 View Post
The temperature doesn't automatically adjust as far as I am aware.

I keep it set at 90F for testing and it never changes.
so if the interior is 90F then the heat goes off, no?
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  #13  
Old 01-18-2023, 08:47 AM
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No, at highest setting heat stays on and is not controlled, at lowest setting A/C stays on.
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  #14  
Old 01-18-2023, 09:04 AM
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ah ok, never tried that
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  #15  
Old 01-20-2023, 01:12 PM
TC2 TC2 is offline
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I wanted to follow up that this issue is resolved.

I checked the wiring to the heater valve and it was good. I looked at pictures online to see if I had installed the hoses incorrectly when I replaced the heater valve and that's what it was.

At the front of the heater valve the hoses were installed backwards. I swapped them and the heat is working correctly now.

I appreciate the help.
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