Panasonic GHP, Test Run Manual

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System P (activation of indoor/outdoor protection devices)
If the system does not operate normally after the above causes of trouble have been corrected, or if any display other than
the above appears on the remote controller display, refer to the “TROUBLESHOOTING” in the separate <Technical Service
Materials>.
During a remote controller test run,
is not detected.
Some of the displays may not appear depending on the model type.
Other
Outdoor unit control board
display
Contents
Group slave unit trouble (trouble detected by system controller)
Oil change time warning ( appears on the Remote Controller)
Defrosting fault alarm
High power backup operation
Compressor oil empty
Trouble with temp. sensor for oil level measurement
System L (settings trouble)
Outdoor unit control
board display
Contents
Mismatch of indoor/outdoor unit types
(Non-GHP device present)
Multiple master units set for group control
Duplicate system address settings
Duplicate indoor unit priority settings
(priority indoor unit)
Duplicate indoor unit priority settings
(other than priority indoor unit)
Group control cable present for individual-control
indoor unit
Indoor unit address not set
Outdoor unit control
board display
Contents
Indoor unit capacity not set
Outdoor unit capacity not set
Indoor unit type setting failure
Indoor unit pairing trouble
Water heat exchanger unit setting failure
Mismatch in outdoor units
Water heat exchanger unit parallel address duplication
Gas type setting failure
Outdoor unit control
board display
Contents
Indoor unit fan trouble
Compressor discharge temp. high
Refrigerant high-pressure switch activated
Power phases reversed (open phase)
Indoor unit ceiling panel connector connection failure
Indoor unit float switch trouble
Indoor unit drain pump error
Water heat exchanger unit freezing trouble
Indoor unit DC fan trouble
Refrigerant circuit failure
Outdoor unit control
board display
Contents
O
2
sensor failure
Refrigerant gas completely absent
Bypass valve failure
4-way valve lock trouble
Refrigerant pressure too high
Outdoor unit fan (inverter) trouble
Water heat exchanger unit interlock trouble
Clutch connection trouble
Group control trouble