Si-95
Table of Contents iii
2.31 Malfunction of Transmission Between MAIN
and SUB Remote Controllers .............................................................. 107
2.32 Malfunction of Transmission Between Indoor
and Outdoor Units in the Same System .............................................. 108
2.33 Excessive Number of Indoor Units ...................................................... 109
2.34 Address Duplication of Central Remote Controller.............................. 110
2.35 Refrigerant System not set, Incompatible Wiring/Piping ..................... 111
2.36 Malfunction of System, Refrigerant System Address Undefined......... 112
3. Failure Diagnosis for Inverter System .................................................113
3.1 Points of Diagnosis.............................................................................. 113
3.2 How to use the Monitor Switch on the Inverter PC Board ................... 114
4. Troubleshooting (Inverter)...................................................................115
4.1 Outdoor Unit: Malfunction of
Inverter Radiating Fin Temperature Rise ............................................ 115
4.2 Outdoor Unit: Inverter Instantaneous Over-Current ............................ 116
4.3 Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload ..... 117
4.4 Outdoor Unit: Inverter Stall Prevention, Compressor Seized .............. 118
4.5 Outdoor Unit: Malfunction of Transmission between Inverter
and Control PC Board ......................................................................... 119
4.6 Power Supply Insufficient or Instantaneous Failure ............................ 120
4.7 Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise
Sensor ................................................................................................. 121
4.8 Outdoor Unit: Inverter Over-Ripple Protection..................................... 122
5. Troubleshooting (OP: Central Remote Controller) ..............................123
5.1 Malfunction of Transmission between Central Remote Controller
and Indoor Unit.................................................................................... 123
5.2 PC Board Defect.................................................................................. 124
5.3 Malfunction of Transmission between Optional Controllers
for Centralized Control......................................................................... 125
5.4 Improper Combination of Optional Controllers
for Centralized Control......................................................................... 126
5.5 Address Duplication, Improper Setting................................................ 127
6. Troubleshooting (OP: Schedule Timer)...............................................128
6.1 Malfunction of Transmission between Central Remote Controller
and Indoor Unit.................................................................................... 128
6.2 PC Board Defect.................................................................................. 129
6.3 Malfunction of Transmission between Optional Controllers
for Centralized Control......................................................................... 130
6.4 Improper Combination of Optional Controllers
for Centralized Control......................................................................... 131
6.5 Address Duplication, Improper Setting................................................ 132
7. Troubleshooting (OP: Unified ON/OFF Controller) .............................133
7.1 Operation Lamp Blinks ........................................................................ 133
7.2 Display “Under Host Computer Integrate Control” Blinks
(Repeats Single Blink)......................................................................... 134
7.3 Display “Under Host Computer Integrate Control” Blinks
(Repeats Double Blink)........................................................................ 136
SI-95.BOOK Page iii Friday, March 31, 2000 10:59 AM
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