Use a multimeter to measure the communication voltage of an inverter air conditioner
Teach you how to measure the communication signal of the inverter air conditioner.
Tools/Materials
A pointer or a digital multimeter
One inverter air conditioner
method/step
1. Use the DC gear of the multimeter to measure the communication voltage of the inverter air conditioner, connect the black test lead to the power supply neutral line N, and use the red test lead to connect the communication line S.
2. Standby state is DC 24V (some are negative voltage)
3. The normal operation after booting up is the DC voltage of DC 0~24V jumping change (some are 0~140V jumping change voltage)
