Lennox E6

Critical

Mini-Split MWM/MPA (Außeneinheit) — Power Factor Correction (PFC) module protection (MPA036S4M-1P and MPA048S4M-1P only).

Lennox E6: Power Factor Correction (PFC) module protection (MPA036S4M-1P and MPA048S4M-1P only). This fault typically halts operation and needs immediate attention.

Possible causes

PFC module overloaded or faulty.

Check steps

Check PFC module and line voltage.

Affected parts

PFC-Modul

Safety note

Discharge capacitors, isolate power.

Source: Lennox Mini-Split Systems Service Manual — Indoor and Outdoor Unit Error Codes (Corp. 1816-L7, 2018), "Extended Reference Guide - Outdoor Unit Error Codes" §4 and "Indoor Unit Error Codes" §5

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.

Look up in Enthalio →

Related fault codes

Outdoor EEPROM malfunction — main control boarE0 Communication error between outdoor unit main E3 Indoor unit coil outlet temperature sensor (T2E4 Outdoor coil sensor (T3) error — voltage outsiF1 Outdoor ambient sensor (T4) error — voltage ouF2 Compressor discharge sensor (T5) error — voltaF3