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ERROR CODE TABLES
Table 76: Water Source Unit Error Codes - continued
Error Code
Master WSU inverter compressor discharge
3 2 –
1
temperature high
Slave 1 WSU inverter compressor discharge
3 2 –
2
temperature too high
Slave 2 WSU inverter compressor discharge
3 2 –
3
temperature too high
3 4 –
1
Master WSU high pressure too high
3 4 –
2
Slave 1 WSU high pressure too high
3 4 –
3
Slave 2 WSU high pressure too high
3 5 –
1
Master WSU low pressure too low
3 5 –
2
Slave 1 WSU low pressure too low
3 5 –
3
Slave 2 WSU low pressure too low
3 6 –
1
Master WSU low pressure ratio
3 6 –
2
Slave 1 WSU low pressure ratio
3 6 –
3
Slave 2 WSU low pressure ratio
4 0 –
1
Master WSU inverter compressor CT sensor error
4 0 –
2
Slave 1 WSU inverter compressor CT sensor error
4 0 –
3
Slave 2 WSU inverter compressor CT sensor error
Master WSU inverter compressor discharge
4 1 –
1
temperature sensor error
Slave 1 WSU inverter compressor discharge
4 1 –
2
temperature sensor error
Slave 2 WSU inverter compressor discharge
4 1 –
3
temperature sensor error
4 2 –
1
Master WSU under-voltage sensor error
4 2 –
2
Slave 1 WSU under-voltage sensor error
4 2 –
3
Slave 2 WSU under-voltage sensor error
4 3 –
1
Master WSU over-voltage sensor error
4 3 –
2
Slave 1 WSU over-voltage sensor error
118
Description
Due to our policy of continuous product innovation, some specifications may change without notification.
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Possible Cause
• Compressor turned off due to Master WSU inverter compressor
discharge temperature too high
• Master WSU flow rate insufficient or flow switch error
• Compressor turned off due to Slave 1 WSU inverter compressor
discharge temperature too high
• Master WSU flow rate insufficient or flow switch error
• Compressor turned off due to Slave 2 WSU inverter compressor
discharge temperature too high
• Slave 2 WSU flow rate insufficient or flow switch error
• Compressor turned off due to Master WSU high pressure too high
• Master WSU flow rate insufficient or flow switch error
• Compressor turned off due to Slave 1 WSU high pressure too high
• Slave 1 WSU flow rate insufficient or flow switch error
• Compressor turned off due to Slave 2 WSU high pressure too high
• Slave 2 WSU flow rate insufficient or flow switch error
Compressor turned off due to Master WSU low pressure too low
Compressor turned off due to Slave 1 WSU low pressure too low
Compressor turned off due to Slave 2 WSU low pressure too low
Master WSU pressure ratio is under limit
Slave 1 WSU pressure ratio is under limit
Slave 2 WSU pressure ratio is under limit
Master WSU inverter compressor current detection (CT) sensor
disconnection or short circuit
Slave 1 WSU inverter compressor current detection (CT) sensor
disconnection or short circuit
Slave 2 WSU inverter compressor current detection (CT) sensor
disconnection or short circuit
Master WSU inverter compressor discharge temperature sensor
disconnection or short circuit
Slave 1 WSU inverter compressor discharge temperature sensor
disconnection or short circuit
Slave 2 WSU inverter compressor discharge temperature sensor
disconnection or short circuit
Master WSU under-voltage sensor disconnection or short circuit
Slave 1 WSU under-voltage sensor disconnection or short circuit
Slave 2 WSU under-voltage sensor disconnection or short circuit
Master WSU over-voltage sensor disconnection or short circuit
Slave 1 WSU over-voltage sensor disconnection or short circuit
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