Specifications

SiBE28-805 Troubleshooting by Remote Controller
Troubleshooting 133
System U0 k Low pressure drop due to refrigerant shortage or electronic expansion valve
failure
190
U1 l Reverse phase, open phase 191
U2 l Power supply insufficient or instantaneous failure 192
U3 l Check operation not executed 195
U4 l Malfunction of transmission between indoor units 196
U5 l Malfunction of transmission between remote controller and indoor unit 198
U5 h Failure of remote controller PC board or setting during control by remote
controller
198
U7 l Malfunction of transmission between outdoor units 199
U8 l Malfunction of transmission between main and sub remote controllers 201
U9 l Malfunction of transmission between indoor and outdoor units in the same
system
202
UA l Improper combination of indoor and outdoor units, indoor units and remote
controller
203
UC k Address duplication of centralized controller 205
UE l Malfunction of transmission between centralized controller and indoor unit 206
UF l System is not set yet 209
UH l Malfunction of system, refrigerant system address undefined 210
Central
Remote
Controller
and
Schedule
Timer
M1 k or h PC board defect 212
M8 k or h Malfunction of transmission between optional controllers for centralized
control
213
MA k or h Improper combination of optional controllers for centralized control 215
MC k or h Address duplication, improper setting 217
Heat
Reclaim
Ventilation
64 k Indoor unit’s air thermistor error —
65 k Outside air thermistor error —
6A k Damper system alarm —
6A l Damper system + thermistor error —
6F k Malfunction of simple remote controller —
6H k Malfunction of door switch or connector —
94 l Internal transmission error —
k : ON h : OFF l : Blink
Malfunction
code
Operation
lamp
Malfunction contents Page
Referred
The system operates for malfunction codes indicated in black squares, however, be sure to check and repair.