Lennox refrigerator error codes

Lennox refrigerator error code e6

Lennox refrigerator error code e6

Communication failure between indoor unit and outdoor unit. PFC module protection

Yes: Check that the connecting wiring between the main board and the PFC module is connected tightly
No: Correct faulty connections, then check proper unit operation


1.
Yes: Check the voltage range between P-N on IPM module is normal? DC277-356V for 18-27KBtu/h; DC277-410V for 36KBtu/h
No: Replace the outdoor main board

2.
Yes: Check if the inductance of the PFC module is good. If the inductor is good, the resistance value of the two ports is 0
No: Replace the inductor

3.
Yes: Replace the PFC module.