LG AC Smart IV CACS4B000 Owner's Manual page 36

28
Troubleshoot
Error
Code
133 SLAVE2 outdoor unit sensor (static speed compressor 1 discharge temperature error)
134 SLAVE2 outdoor unit sensor (static speed compressor 2 discharge temperature error)
135 SLAVE2 outdoor unit sensor (heat exchanger temperature sensor A error)
136 SLAVE2 outdoor unit sensor (heat exchanger temperature sensor B error)
137 SLAVE2 outdoor unit (fluid pipe temperature sensor error)
138 SLAVE2 outdoor unit (overcooling inlet temperature sensor error)
139 SLAVE2 outdoor unit (overcooling outlet temperature sensor error)
140 Fluid pipe sensor error of heat recovery unit
141 Overcooling inlet sensor error of heat recovery unit
142 Overcooling outlet sensor error of heat recovery unit
143 Heat recovery unit communication error
144 Heat recovery unit reserve 1
145 Heat recovery unit reserve 2
146 Heat recovery unit reserve 3
147 Heat recovery unit reserve 4
148 Heat recovery unit reserve 5
176 SLAVE2 static speed 1 compressor over-current/under-current
177 SLAVE2 static speed 2 compressor over-current/under-current
178 SLAVE3 static speed 1 compressor over-current/under-current
179 SLAVE3 static speed 2 compressor over-current/under-current
180 Anti-Freeze (water-cooling)
181 Water temperature sensor error (water-cooling)
182 Sub Micom communication error
183 Oil supply failure
184 Inverter oil pipe temperature sensor error
185 Static #1 oil pipe temperature sensor error
186 Static #2 oil pipe temperature sensor error
193 Fan board heat plate temperature surge
194 Fan board heat plate temperature sensor error
Description