Service call on 11/29/19 On arrival customer explained to me one of her unit thermostat it was red set needs service I set the unit to call for heat measured supply and return air temp measured voltage and amps inspected electrical connections checked drain checked air filter checked EWP and LWP also water temp measured pressure and temp and unit indicating zero leaks unit operating normal at this time. No repair collected $124 diagnostic fee on C.C on file.