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Thread: Vaillant V 6-105 HFI
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07-02-2014, 06:30 PM #1
Vaillant V 6-105 HFI
HI. I am working on the above system was on R410a nit changed to R1290 HC. The operation green led on the front flashes 6 times. Does anyone have a technical manual on fault codes please. ..