Daikin VRVIII-S Service Manual page 115

4. Troubleshooting by Indication on
5. Troubleshooting by Indication on
104
3.27 "J9" Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe
Thermistor (R4T) ..................................................................................154
3.28 "JA" Outdoor Unit: Malfunction of High Pressure Sensor......................155
3.29 "JC" Outdoor Unit: Malfunction of Low Pressure Sensor.......................156
3.30 "L1" Outdoor Unit: Malfunction of PC Board ..........................................157
3.31 "L4" Outdoor Unit: Malfunction of Inverter Radiating
Fin Temperature Rise...........................................................................158
3.32 "L5" Outdoor Unit: Inverter Compressor Abnormal ...............................159
3.33 "L8" Outdoor Unit: Inverter Current Abnormal.......................................160
3.34 "L9" Outdoor Unit: Inverter Start up Error..............................................161
3.35 "LC" Outdoor Unit: Malfunction of Transmission between
Inverter and Control PC Board .............................................................162
3.36 "P1" Outdoor Unit: High Voltage of Capacitor in
Main Inverter Circuit .............................................................................163
3.37 "UO" Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................164
3.38 "U2" Power Supply Insufficient or Instantaneous Failure ......................166
3.39 "U3" Check Operation not Executed......................................................168
3.40 "U4" Malfunction of Transmission between
Indoor Units and Outdoor Units............................................................169
3.41 "U5" Malfunction of Transmission between
remote control and Indoor Unit.............................................................171
3.42 "U8" Malfunction of Transmission between
Main and Sub remote controls .............................................................172
3.43 "U9" Malfunction of Transmission between
Indoor and Outdoor Units in the Same System....................................173
3.44 "UA" Excessive Number of Indoor Units ................................................175
3.45 "UC" Address Duplication of Central remote control ..............................176
3.46 "UE" Malfunction of Transmission between Central remote control
and Indoor Unit.....................................................................................177
3.47 "UF" System is not Set yet .....................................................................179
3.48 "UH" Malfunction of System,
Refrigerant System Address Undefined ...............................................180
the Centralized remote control ............................................................181
4.1 "UE" Malfunction of Transmission between Centralized remote control
and Indoor Unit.....................................................................................181
4.2 "M1" PC Board Defect ............................................................................182
4.3 "M8" Malfunction of Transmission between
Optional Controllers for Centralized Control.........................................183
4.4 "MA" Improper Combination of Optional Controllers for
Centralized Control...............................................................................184
4.5 "MC" Address Duplication, Improper Setting ..........................................186
the Unified ON/OFF Controller............................................................187
5.1 Operation Lamp Blinks .........................................................................187
5.2 Display "Under Host Computer Integrate Control" Blinks
(Repeats Single Blink)..........................................................................189
5.3 Display "Under Host Computer Integrate Control" Blinks
(Repeats Double Blink) ........................................................................192
SiENBE34-703
Troubleshooting