Hi all just joined the club. I have a 'Y' reg KA Collection and have had a problem with the A/c and then the cabin heater. I have fixed the A/c with a second hand compressor and recharge kit but the heater is eluding me. The Haynes manual is a bit thin to say the least on info! The temperature control has no affect, just blows air at outside air temperature (unless a/c is on). The temp control appears to be electric any ideas what I should be checking?