Arrived on site to diagnose a no heating 2006 carrier unit. Spoke to husband and they stated they had another company servicing unit but are no longer using them. Bill stated he had us out in summer and got repairs done then but had never tested to run the heater as it was in summer and now that they tried to fire up unit heater did nothing. Arrived and cycled heater and thermostat clicked but nothing happened. Checked electrical compartment and wiring. Found power but there was not sending the calling command and tires to jump unit at the board and u it did not operate. Found board doing a lot of clicking but not turning on unit. Wires are good and found thermostat bad. Cycled at board it self and unit staters clicking but not turning it on. Advised client of issues going on. They are aware unit is old. Blower motor is leaking a lot of oil and covered in dirt build up. Found burn marks on board from operation and age. Called up Lynn and went over all findings and areas of concerns. Ly