Panasonic U-120ME2U9 Service Manual page 152

3. 2WAY Alarm Codes
Alarm code
P03
P04
P05
P15
P14
P16
P26
P17
P20
P22
1 P29
P19
Blinking Inspection Display on the remote controller
2
3
4
5
6
7
8
9
1st compressor discharge temperature too high.
Protection device activated. High pressure switch (63PH, 63PH1 or 63PH2) or compressor
thermal protector (49C1 / 49C2).
Open phase in power input is detected at HIC for 1st compressor.
Open phase in power input is detected at HIC for 2nd compressor.
Input detected at EXCT terminal on indoor PCB for refrigerant detector.
Overcurrent of 1st compressor on the secondary side of inverter circuit, or inverter failed to
syncronize with rotation.
Overcurrent of 2nd compressor on the secondary side of inverter circuit, or inverter failed to
syncronize with rotation.
2nd compressor discharge temperature too high.
Too high load in refrigerant circuit.
Fan motor or inverter drive of outdoor unit has failure.
Inverter for 1st compressor failed to start or failed to syncronize with rotation.
Inverter for 2nd compressor failed to start or failed to syncronize with rotation.
Alarm meaning
5 - 6
2WAY VRF SYSTEM
Trouble Diagnosis
Page
5-25
5-26
5-27
5-27
5-27
5-27
5-27
5-25
5-28
5-28, 5-29
5-29
5-29
5-30