List of Malfunction Code SiEBE18-526
256 Troubleshooting
Outdoor
Unit
L4 Malfunction of inverter radiating fin temperature rise — — — 308
L5 Inverter compressor motor grounding, short circuit — — — 309
L6 Compressor motor coil grounding on short circuit — — — —
L8 Inverter current abnormal — — — 310
L9 Inverter start up error — — — 311
LA Malfunction of power unit — — — —
LC Malfunction of transmission between inverter and
control PC board
———312
P1 Inverter over-ripple protection — — — —
P4 Malfunction of inverter radiating fin temperature rise
sensor
———314
PJ Faulty combination inverter and fan driver,
Malfunction of capacity setting
———315
System
U0 Low pressure drop due to refrigerant shortage or
electronic expansion valve failure
———316
U1 Reverse phase / open phase — — — —
U2 Power supply insufficient or instantaneous failure — — — 317
U3 Check operation is not conducted. — — — 319
U4 Malfunction of transmission between indoor and BP
units
— — 290 —
U5 Malfunction of transmission between remote
controller and indoor unit
— 282 — —
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)
— 283 — —
U9 Malfunction of transmission between indoor unit and
outdoor unit in the same system
———320
UA Mismatching of indoor unit, BP unit and outdoor unit
etc.
— 284 — 321
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
———322
UH Malfunction of system, refrigerant system address
undefined
———323
UJ Transmission error between outdoor unit and BP unit — — 292 —
9: Blink 8: ON 7: OFF
Malfunction
code
Malfunction contents Page Referred
RA Indoor
Unit
SkyAir
Indoor Unit
BP Unit Outdoor
Unit
The system operates for malfunction codes indicated in black squares, however, be sure to check and repair.
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