[Chris Vais]

The Heater Control on my 968 has failed and does not seem to be repairable. New replacement units are no longer available from Porsche. My only option is to find a good used one if the one in the car is not repairable. Anybody know if there is a cottage industry out there, capable of repairing the unit? think the problem may be a bad circuit board but nether I nor my mechanic have the experience or the skill set to determine whether the circuit board is the point of failure. Does anyone on the Forum have a working one they would be willing to part with?

 

My mechanic knows the nearby Porsche Dealership Service Manager and suggested I reach out to them. They have 2 mechanics who work exclusively on older Porsches. 

 

Anyone else experienced this failure?

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[ds968]

What is a “ heater control “ unit ?    Heater control valves are widely available just about everywhere, but I presume you’re not talking about the valve , and something else entirely .. AC/ Heater heater core ?    This one ? 

https://www.ebay.com/p/1084064011

This one is brand new ( and at a stupidly absurd price ) but there are several used ones on ebay ( allegedly in good working condition) for $ 200- $250 

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[lbpesq]

I had my climate control head unit go bad many years ago.  I got a used one from Parts Heaven Porsche in Hayward, CA.  Unfortunately, they closed back in 2019.  Good luck with the search.  As for repairing the old unit, you might want to consider an electronics tech instead of a car mechanic.

 

Bill

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[Chris Vais]

Thanks Bill, Porsche Marin has couple of experts in old school Porsches. They will have a look. It might be repairable. We shall see.

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[lbpesq]

Hi Chris, there are currently a few on eBay.

 

Bill

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[Chris Vais]

Success achieved. At the suggestion of Bill Ravina of Ignacio Motorsports, I took the car to Porsche of Marin. They have a mechanic there who has been working on Porsches of all types for 50 years. He was able to determine that the heater control unit was OK. The problem was that it was incorrectly plumbed. When this problem first came up I initially had it looked into and was told it was the dampers the distribute the air flow. I had it looked at a second time when I was in Oregon and the mechanic was able to get it sort of working. Porsche Marin got every thing working as it should. Not an inexpensive job, but worth the cost.

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