LG Multi V Water IV - Error Code Tables: Water Source Unit Errors (Part 5); Water Source Unit Error Codes (Section 5)

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Error Codes
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Error Code Description Possible Cause
1 1 5 1
Master WSU sub cool outlet temperature sensor
error
Master WSU Sub cool outlet temperature sensor disconnection or short
circuit
1 1 5 2
Slave 1 WSU sub cool outlet temperature sensor
error
Slave 1 WSU Sub cool outlet temperature sensor disconnection or short
circuit
1 1 5 3
Slave 2 WSU sub cool outlet temperature sensor
error
Slave 2 WSU sub cool outlet temperature sensor disconnection or short
circuit
1 1 6 1 Master WSU oil sensor error Master WSU oil sensor disconnection or short circuit
1 1 6 2 Slave 1 WSU oil sensor error Slave 1 WSU oil sensor disconnection or short circuit
1 1 6 3 Slave 2 WSU oil sensor error Slave 2 WSU oil sensor disconnection or short circuit
1 4 5 1
Master WSU main board to external board
communication error
Master WSU main board communication signal is not received from the
external board
1 4 5 2
Slave 1 WSU main board to external board
communication error
Slave 1 main board communication signal is not received from the
external board
1 4 5 3
Slave 2 WSU main board to external board
communication error
Slave 2 main board communication signal is not received from the
external board
1 5 1 1 WSU 4 way valve switch failure WSU 4 way valve switch error
1 8 1 1 Master WSU water temperature sensor error Master WSU water temperature sensor open/short
1 8 1 2 Slave 1 WSU water temperature sensor error Slave 1 WSU water temperature sensor open/short
1 8 1 3 Slave 2 WSU water temperature sensor error Slave 2 WSU water temperature sensor open/short
1 8 2 1
Master WSU communication error between external
board MICOMs
Communication error between Master WSU external board main MICOM
and sub MICOM
1 8 2 2
Slave 1 WSU communication error between
external board MICOMs
Communication error between Slave 1 WSU external board main MICOM
and sub MICOM
1 8 2 3
Slave 2 WSU communication error between
external board MICOMs
Communication error between Slave 2 WSU external board main MICOM
and sub MICOM
Table 76: Water Source Unirt Error Codes - continued
ERROR CODE TABLES