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MULTI V Water IV System Installation Manual
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Error Code Description Possible Cause
6 2 – 1
Master WSU inverter Insulated Gate Bipolar
Transistor (IGBT) high temp error
Master WSU inverter IGBT temperature above 194°F
6 2 – 2 Slave 1 WSU inverter IGBT high temp error Slave 1 WSU inverter IGBT temperature above 194°F
6 2 – 3 Slave 2 WSU inverter IGBT high temp error Slave 2 WSU inverter IGBT temperature above 194°F
6 5 – 1
Master WSU inverter IGBT temperature sensor
error
Master WSU inverter IGBT temperature sensor disconnection or short
circuit
6 5 – 2
Slave 1 WSU inverter IGBT temperature sensor
error
Slave 1 WSU inverter IGBT temperature sensor disconnection or short
circuit
6 5 – 3
Slave 2 WSU inverter IGBT temperature sensor
error
Slave 2 WSU inverter IGBT temperature sensor disconnection or short
circuit
7 1 – 1 Master WSU PFC CT sensor error Master WSU PFC CT sensor open or short
7 1 – 2 Slave 1 WSU PFC CT sensor error Slave 1 WSU PFC CT sensor open or short
7 1 – 3 Slave 2 WSU PFC CT sensor error Slave 2 WSU PFC CT sensor open or short
8 6 – 1 Master WSU EEPROM error
Communication error between Master WSU MICOM and EEPROM or
EEPROM failure
8 6 – 2 Slave 1 WSU EEPROM error
Communication error between Slave 1 WSU MICOM and EEPROM or
EEPROM failure
8 6 – 3 Slave 2 WSU EEPROM error
Communication error between Slave 2 WSU MICOM and EEPROM or
EEPROM failure
8 8 – 1 Master WSU PFC PCB EEPROM error
Communication error between Master WSU master PFC and EEPROM
or EEPROM failure
8 8 – 2 Slave 1 WSU PFC PCB EEPROM error
Communication error between Slave 1 WSU master PFC and EEPROM
or EEPROM failure
8 8 – 3 Slave 2 WSU PFC PCB EEPROM error
Communication error between Slave 2 WSU master PFC and EEPROM
or EEPROM failure
1 0 4 1 Slave WSU to Master WSU communication error Master WSU does not receive communication signal from Slave WSU
1 0 4 2 Master WSU to Slave 1 WSU communication error Master WSU communication signal not received by Slave 1 WSU
1 0 4 3 Master WSU to Slave 2 WSU communication error Master WSU communication signal not received by Slave 2 WSU
1 1 3 1 Master WSU liquid pipe temperature sensor error Master WSU liquid pipe temperature sensor disconnection or short circuit
1 1 3 2 Slave 1 WSU liquid pipe temperature sensor error Slave 1 WSU liquid pipe temperature sensor disconnection or short circuit
1 1 3 3 Slave 2 WSU liquid pipe temperature sensor error Slave 2 WSU liquid pipe temperature sensor disconnection or short circuit
1 1 4 1 Master WSU sub cool inlet temperature sensor error
Master WSU Sub cool inlet temperature sensor disconnection or short
circuit
1 1 4 2
Slave 1 WSU sub cool inlet temperature sensor
error
Slave 1 WSU Sub cool inlet temperature sensor disconnection or short
circuit
1 1 4 3
Slave 2 WSU sub cool inlet temperature sensor
error
Slave 2 WSU Sub cool inlet temperature sensor disconnection or short
circuit
Table 76: Water Source Unirt Error Codes - continued
ERROR CODE TABLES
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