Panasonic U-16GE2E5 Test Run Manual page 55

System L (settings trouble)
Outdoor
unit control
board
display
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
System P (activation of indoor/outdoor protection devices)
Outdoor
unit control
board
display
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 fl oat switch trouble

Water heat exchanger unit freezing trouble

Indoor unit DC fan trouble

Refrigerant circuit failure

Other
Outdoor unit
control board
display
Group slave unit trouble (trouble detected by system controller)

Oil change time warning (

Defrosting fault alarm

High power backup operation

Compressor oil empty

Trouble with temp. sensor for oil level measurement

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 "Failure Diagnosis Section" 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.
Contents
Contents
appears on the Remote Controller)
Outdoor
unit control
board
display
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
O sensor failure

2
 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

Contents
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Contents
Contents