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ENGLISH
Installation Manual 83
Test Run
n Refer to the troubleshooting guide of service technical manual for each error.
Display
Error item Root cause of error
number
Slave1 outside unit liquid pipe temperature sensor disconnection or
short circuit
Slave2 outside unit liquid pipe temperature sensor disconnection or
short circuit
Master outside unit over-cooling inlet temperature sensor disconnec-
tion or short circuit
Slave1 outside unit over-cooling inlet temperature sensor disconnec-
tion or short circuit
Slave2 outside unit over-cooling inlet temperature sensor disconnec-
tion or short circuit
Master outside unit over-cooling outlet temperature sensor disconnec-
tion or short circuit
Slave1 outside unit over-cooling outlet temperature sensor disconnec-
tion or short circuit
Slave2 outside unit over-cooling outlet temperature sensor disconnec-
tion or short circuit
Outside unit 4 way valve switch error
Master outside unit Fixed speed compressor burn, locking and over-
current
Slave1 outside unit Fixed speed compressor burn, locking and over-
current
Slave2 outside unit Fixed speed compressor burn, locking and over-
current
Plate type heat exchanger freeze prevention error
Water temperature sensor open/short
Communication error between main MICOM and sub MICOM
1132
Slave1 outside unit liquid pipe temperature
sensor error
1133
Slave2 outside unit liquid pipe temperature
sensor error
1141
Master outside unit over-cooling inlet tempera-
ture sensor error
1142
Slave1 outside unit over-cooling inlet tempera-
ture sensor error
1143
Slave2 outside unit over-cooling inlet tempera-
ture sensor error
1151
Master outside unit over-cooling outlet temper-
ature sensor error
1152
Slave1 outside unit over-cooling outlet temper-
ature sensor error
1153
Slave2 outside unit over-cooling outlet temper-
ature sensor error
1 5 1 - Outside unit 4 way valve switch failure
1731
Master outside unit Fixed speed compressor
error
1732
Slave1 outside unit Fixed speed compressor
error
1733
Slave2 outside unit Fixed speed compressor
error
1 8 0 - Plate type heat exchanger freeze prevention
1 8 1 - Water temperature sensor error
1 8 2 - Communication error between MICOMs
Outside unit
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