Troubleshooting by Error Code SiAF332111E
192 Part 6 Service Diagnosis
The system operates for error codes indicated, however, be sure to check and repair.
System U0 k Refrigerant shortage 293
U1 l
Open phase 297
Reverse phase, open phase 298
U2 l Power supply insufficient or instantaneous abnormality 299
U3 l Check operation not executed 307
U4 l Transmission error between indoor units and outdoor units 310
U5 l Transmission error between remote controller and indoor unit 314
U8 l Transmission error between main and sub remote controllers 315
U9 l Other indoor units and outdoor unit abnormality 316
UA l
Improper combination of indoor unit and outdoor unit, indoor unit and remote
controller
317
UC k Address duplication of centralized controller 320
UE l Transmission error between centralized controller and indoor unit 321
UF l System not set yet 324
UH l System abnormality, refrigerant system address undefined 326
M1 l Defective PCB 327
M8 l Transmission error (between centralized controllers) 328
MA l Poor centralized controller combination 329
MC l Address duplication, poor setting 330
— l Operation lamp blinking 331
— l Central control indicator lamp blinking (one blink) 333
— l Central control indicator lamp blinking (two blinks) 336
Error code
Operation
lamp
Description
Reference
page
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