Daikin VRV S RXQ4/5ARV1 Service Manual page 193

SiAF332111E
Monitor mode
To enter the monitor mode, press
the MODE (BS1) button when in
"Setting mode 1".
Selection of setting item
Press the SET (BS2) button and set
the LED display to a setting item.
Confirmation of error 1
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.
Confirmation of error 3
Press the SET (BS2) button once to
display "error location".
Confirmation of error 4
Press the SET (BS2) button once to
display "master or slave 1 or slave 2"
and "error location".
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".
Part 6 Service Diagnosis
Inverter circuit capacitor high voltage
Radiation fin thermistor abnormality
Poor inverter and fan drive combination
Refrigerant shortage
Power supply insufficient or
instantaneous abnormality
Check operation not executed
Transmission error between indoor
units and outdoor units
Transmission error between indoor
units and outdoor units in the same
system
Improper combination of indoor units
and outdoor units, indoor units and
remote controller
System not set yet
System abnormality, refrigerant
system address undefined
Detailed
description
on next
page.
Error Code via Outdoor Unit PCB
Error Description
Imbalance of inverter power supply
voltage
Defective thermistor of inverter fin
Refrigerant shortage alarm
Insufficient Inverter voltage
Open phase in inverter (Phase T)
Error due to SP-PAM overvoltage
Error due to P-N short circuit
I/O transmission error
Indoor unit system error
Indoor unit system abnormal in other
system or other indoor unit system
abnormal in own system
System transmission error
Overconnection error of indoor units
Error of field setting
Refrigerant abnormal
Connection error (BP unit)
Conflict in wiring and piping
Wiring error (Auto-address error)
Error Code
P1
P4
PJ
U0
U2
U3
U4
U9
UA
UF
UH
187