LG ARWN Serie Manual De Instalación página 72

Test Run
Display
number
Slave1 outside unit liquid pipe temperature
1 1 3 2
sensor error
Slave2 outside unit liquid pipe temperature
1 1 3 3
sensor error
Master outside unit over-cooling inlet tempera-
1 1 4 1
ture sensor error
Slave1 outside unit over-cooling inlet tempera-
1 1 4 2
ture sensor error
Slave2 outside unit over-cooling inlet tempera-
1 1 4 3
ture sensor error
Master outside unit over-cooling outlet temper-
1 1 5 1
ature sensor error
Slave1 outside unit over-cooling outlet temper-
1 1 5 2
ature sensor error
Slave2 outside unit over-cooling outlet temper-
1 1 5 3
ature sensor error
1 5 1 - Outside unit 4 way valve switch failure
Master outside unit static speed compressor
1 7 3 1
error
Slave1 outside unit static speed compressor
1 7 3 2
error
Slave2 outside unit static speed compressor
1 7 3 3
error
1 8 0 - Plate type heat exchanger freeze prevention
1 8 1 - Water temperature sensor error
1 8 2 - Communication error between MICOMs
n Refer to the troubleshooting guide of service technical manual for each error.
72 Outside Unit
Error item Root cause of error
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 static speed compressor burn, locking and over-
current
Slave1 outside unit static speed compressor burn, locking and over-
current
Slave2 outside unit static 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