Fall pm on 12/05/19 On arrival set unit to call for heat measured supply and return air temp measured voltage and amps inspected electrical connections checked drain checked air filter and replaced checked compressor capacitor checked coil checked blower motor checked EWP and LWP it was low pump it back up to 55/49 psi checked water temp checked all other electrical connections unit tested unit operating normal at this time. Recommended UV lights installation and single or hole house surge protector also wet switch installation to avoid future problems.