Daikin VRV S RXQ4/5ARV1 Service Manual page 198

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