Selection of setting item
Confirmation of error 1
To enter the monitor mode, press
the MODE (BS1) button when in
“Setting mode 1”.
Press the SET (BS2) button and set
the LED display to a setting item.
Press the RETURN (BS3) button
once to display "First digit" of error
code.
Confirmation of error 2
Press the SET (BS2) button once to
display "Second digit" of error code.
Press the RETURN (BS3) button
and switches to the initial status of
“Monitor mode”.
∗ Press the MODE (BS1) button and
returns to “Setting mode 1”.
Confirmation of error 3
Press the SET (BS2) button once to
display "error location".
Detailed
description
on next
page.
Confirmation of error 4
Press the SET (BS2) button once to
display "master or slave 1 or slave 2"
and "error location".
Monitor mode
Error Description
Error Code
Imbalance of inverter power supply Inverter circuit capacitor high voltage
voltage
P1
Radiation fin thermistor abnormality Defective thermistor of inverter fin P4
PJPoor inverter and fan drive combination
Power supply insufficient or
instantaneous abnormality
Refrigerant shortage Refrigerant shortage alarm U0
Insufficient Inverter voltage U2
Open phase in inverter (Phase T)
Error due to SP-PAM overvoltage
Error due to P-N short circuit
U3Check operation not executed
Transmission error between indoor
units and outdoor units
U4I/O transmission error
Indoor unit system error
Transmission error between indoor
units and outdoor units in the same
system
Indoor unit system abnormal in other
system or other indoor unit system
abnormal in own system
U9
Improper combination of indoor units
and outdoor units, indoor units and
remote controller
System transmission error UA
Overconnection error of indoor units
Error of field setting
Refrigerant abnormal
Connection error (BP unit)
System not set yet Conflict in wiring and piping UF
UHWiring error (Auto-address error)
System abnormality, refrigerant
system address undefined
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