I have a problem with the hvac unit in my van. A few days ago one of the relays made its presence known thorugh some very active "clicking". The next day none of the controls on the dash for the heater or ac would work, other than the blower. I've checked all the fuses - all good. I've traced power following the schematic and I have power where its expected. Short of replacin the circuit board, is there something else I should consider?
Thanks, Doug