Specifications

SiBE28-805
120 Troubleshooting
3.30 “L4” Outdoor Unit: Malfunction of
Inverter Radiating Fin Temperature Rise .............................................175
3.31 “L5” Outdoor Unit: Inverter Compressor Abnormal ...............................177
3.32 “L8” Outdoor Unit: Inverter Current Abnormal.......................................179
3.33 “L9” Outdoor Unit: Inverter Start Up Error.............................................181
3.34 “LC” Outdoor Unit: Malfunction of Transmission Between
Inverter and Control PC Board.............................................................183
3.35 “P1” Outdoor Unit: Inverter Over-Ripple Protection...............................186
3.36 “P4” Outdoor Unit: Malfunction of
Inverter Radiating Fin Temperature Rise Sensor.................................187
3.37 “PJ” Outdoor Unit: Faulty Field Setting after Replacing Main
PC Board or Faulty Combination of PC Board .....................................189
3.38 “U0” Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................190
3.39 “U1” Reverse Phase, Open Phase........................................................191
3.40 “U2” Outdoor Unit: Power Supply Insufficient or
Instantaneous Failure...........................................................................192
3.41 “U3” Outdoor Unit: Check Operation not Executed ...............................195
3.42 “U4” Malfunction of Transmission Between Indoor Units ......................196
3.43 “U5” Indoor Unit: Malfunction of Transmission Between
Remote Controller and Indoor Unit.......................................................198
3.44 “U7” Indoor Unit: Malfunction of Transmission Between
Outdoor Units .......................................................................................199
3.45 “U8” Indoor Unit: Malfunction of Transmission Between
Main and Sub Remote Controllers .......................................................201
3.46 “U9” Indoor Unit: Malfunction of Transmission Between
Indoor and Outdoor Units in the Same System....................................202
3.47 “UA” Improper Combination of Indoor and Outdoor Units,
Indoor Units and Remote Controller.....................................................203
3.48 “UC” Address Duplication of Centralized Controller...............................205
3.49 “UE” Malfunction of Transmission Between
Centralized Controller and Indoor Unit .................................................206
3.50 “UF” System is not Set yet.....................................................................209
3.51 “UH” Malfunction of System, Refrigerant System Address Undefined...210
4. Troubleshooting (OP: Central Remote Controller) ..............................212
4.1 “M1” PC Board Defect ...........................................................................212
4.2 “M8” Malfunction of Transmission Between Optional Controllers for
Centralized Control...............................................................................213
4.3 “MA” Improper Combination of Optional Controllers for
Centralized Control...............................................................................215
4.4 “MC” Address Duplication, Improper Setting .........................................217
5. Troubleshooting (OP: Unified ON/OFF Controller) .............................220
5.1 Operation Lamp Blinks .........................................................................220
5.2 Display “Under Centralized Control” Blinks (Repeats Single Blink) .....222
5.3 Display “Under Centralized Control” Blinks (Repeats Double Blink) ....225