Table of Contents
Advertisement
Test Run
Display
number
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.
70
Outside Unit
Error item
Root cause of error
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
Advertisement
Table of Contents
