Completed one ccm maintenance on air handler heat pump, I checked thermostat operations inspected drain checked heat strips, they would not kick on checked my 24v and got it at board and thermostat was not helping reach desired temp it took awhile and wasn’t cold outside but they never kicked on customer would like replaced checked zone board And dampers did not change 20x20x5 filter as it was good at this time checked blower motor amps and cleanliness outside I checked fan Motor amps capacitor mfd and Freon levels in heating mode everything performed as it should at this time.