Hi guys,

We are having a bit of trouble with this R22 split ducted system, In cooling it seems to be working fine most of the time, though we did see the suction temp drop to -8 for a bit but then did go back to 2 degrees. The ambient temp is 16 degrees celsius.

The customer has reported the issue in heating the supply air temp is 27 degrees celsius and the return air intake is 22. In cooling the supply air is 12 and return air intake 20.

Running in cooling the Discharge temp is 40 degrees celsius (207 PSI) and suction most of the time around 0 (58 PSI). but in heating the discharge is only at 30 degrees celsius (158 PSI) and the suction is at 12 degrees celsius (90 psi)

The evaporator/condenser coils and filters are clean. The Evap fan is running. The condenser fans start at full speed then reduce after maybe 1 minute.

We suspect that this is a refrigerant issues, reversing valve issue or compressor issue.

Any help would be appreciated.