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9.4 Wiring method of indoor unit
Loosen wire cover and connect the power cord and communication wire of indoor unit to the terminal
correspondingly.
Note:
When connecting power cord to power supply terminal, please pay attention to the following items:
Do not connect the power cord with different dimensions to the same connection wire end. Improper contact will
cause heat generation.
Do not connect the power line with different dimensions to the same grounding wire end. Improper contact will
affect protection.
Do not connect the power line to the connecting end of communication wire. Incorrect connection will cause
damage to the connected unit.
The wiring should ensure that the ground line is the last one to be broken off by force.
9.5 Example wiring diagram.
Wiring diagram please refers to the following.
• Before starting the test running, please conrm the following works have been done successfully.
1) Correct piping work;
2) Correct wiring work;
3) Correct match of indoor and outdoor unit;
4) Proper recharge of refrigerant if needed.
• Make sure that all the stop valves are fully open.
• Check the voltage supplied to the outdoor and indoor units, please conrm that is 220-240V.
• Wiring Error Check
This product is capable of automatic checking of wiring error.
YCZ A004
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