Daikin Super Multi Plus D-Series Service Manual page 267

List of Malfunction Code
Malfunction
code
Outdoor L4 Malfunction of inverter radiating fin temperature rise
Unit
L5 Inverter compressor motor grounding, short circuit
L6 Compressor motor coil grounding on short circuit
L8 Inverter current abnormal
L9 Inverter start up error
LA Malfunction of power unit
LC Malfunction of transmission between inverter and
control PC board
P1 Inverter over-ripple protection
P4 Malfunction of inverter radiating fin temperature rise
sensor
PJ Faulty combination inverter and fan driver,
Malfunction of capacity setting
System U0 Low pressure drop due to refrigerant shortage or
electronic expansion valve failure
U1 Reverse phase / open phase
U2 Power supply insufficient or instantaneous failure
U3 Check operation is not conducted.
U4 Malfunction of transmission between indoor and BP
units
U5 Malfunction of transmission between remote
controller and indoor unit
U5 Failure of remote controller PC board or setting
during control by remote controller
U7 Malfunction of transmission between outdoor units
U8 Malfunction of transmission between master and
slave remote controllers (malfunction of slave remote
controller)
U9 Malfunction of transmission between indoor unit and
outdoor unit in the same system
UA Mismatching of indoor unit, BP unit and outdoor unit
etc.
UC Address duplication of central remote controller
UE Malfunction of transmission between central remote
controller and indoor unit
UF Refrigerant system not set, incompatible wiring /
piping
UH Malfunction of system, refrigerant system address
undefined
UJ Transmission error between outdoor unit and BP unit
The system operates for malfunction codes indicated in black squares, however, be sure to check and repair.
256
Malfunction contents
9: Blink 8: ON 7: OFF
Page Referred
RA Indoor SkyAir BP Unit
Unit Indoor Unit
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SiEBE18-526
Outdoor
Unit
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Troubleshooting