SiE-05C
Table of Contents
iii
3.12 Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller . 138
3.13 Outdoor Unit: Actuation of Safety Device ............................................ 139
3.14 Outdoor Unit: PC Board Defect ........................................................... 139
3.15 Outdoor Unit: Actuation of High Pressure Switch................................ 140
3.16 Outdoor Unit: Actuation of Low Pressure Switch................................. 141
3.17 Outdoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E)....................................................... 142
3.18 Outdoor Unit: Abnormal Discharge Pipe Temperature........................ 143
3.19 Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T)........... 144
3.20 Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T) .......... 144
3.21 Outdoor Unit: Malfunction of Thermistor (R4T) for Suction Pipe ......... 145
3.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger ... 145
3.23 Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor........... 146
3.24 Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor............... 147
3.25 Outdoor Unit: Malfunction of Oil Temperature Thermistor (R5T) ........ 148
3.26 Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure ..................................................... 149
3.27 Negative Phase, Open Phase ............................................................. 150
3.28 Malfunction of Transmission Between Indoor Units ............................ 151
3.29 Malfunction of Transmission Between Remote Controller
and Indoor Unit .................................................................................... 152
3.30 Malfunction of Transmission Between Outdoor Units.......................... 153
3.31 Malfunction of Transmission Between Master and
Slave Remote Controllers.................................................................... 154
3.32 Malfunction of Transmission Between Indoor and
Outdoor Units in the Same System ..................................................... 155
3.33 Excessive Number of Indoor Units ...................................................... 156
3.34 Address Duplication of Central Remote Controller.............................. 156
3.35 Refrigerant System not set, Incompatible Wiring/Piping ..................... 157
3.36 Malfunction of System, Refrigerant System Address Undefined......... 158
4. Failure Diagnosis for Inverter System .................................................159
4.1
Points of Diagnosis.............................................................................. 159
4.2
How to use the Monitor Switch on the Inverter PC Board ................... 160
5. Troubleshooting (Inverter)...................................................................161
5.1
Outdoor Unit: Malfunction of
Inverter Radiating Fin Temperature Rise ............................................ 161
5.2
Outdoor Unit: Inverter Instantaneous Over-Current ............................ 162
5.3
Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload ..... 163
5.4
Outdoor Unit: Inverter Stall Prevention, Compressor Lock.................. 164
5.5
Outdor Unit: Malfunction of Transmission between Inverter and
Control PC Board ................................................................................ 165
5.6
Power Supply Insufficient or Instantaneous Failure ............................ 166
5.7
Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature
Rise Sensor ......................................................................................... 167
5.8
Outdoor Unit: Inverter Over-Ripple Protection..................................... 168
6. Troubleshooting (OP: Central Remote Controller) ..............................169
6.1
Malfunction of Transmission between Central Remote Controller and
Indoor Unit ........................................................................................... 169
6.2
PC Board Defect.................................................................................. 170
6.3
Malfunction of Transmission between Optional Controllers
for Centralized Control......................................................................... 170
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