Pioneer UB048GMFILCFHD User Manual

101
16.3.10 Inverter compressor drive error diagnosis and solution(P4)
Error Code
P4
Malfunction decision
conditions
An abnormal inverter compressor drive is detected by a special
detection circuit, including communication signal detection,
voltage detection, compressor rotation speed signal detection
and so on.
Supposed causes
Wiring mistake; IPM malfunction; Outdoor fan ass’y faulty
Compressor malfunction; Outdoor PCB faulty
Trouble shooting:

Pioneer UB048GMFILCFHD Specifications

General

Cooling Capacity (BTU)	48000
SEER	16
HSPF	9.5
Refrigerant	R-410A
Heating Capacity (BTU)	48000
Power Supply	208-230V, 60Hz, 1 Phase
Indoor Unit Weight	44 lbs