Chigo air conditioning shows that dp is mostly caused by outdoor unit problems. It is suggested to check whether the air conditioner has high and low voltage protection caused by fluorine deficiency, then measure whether the compressor is short-circuited or thermally protected, and finally check the problems of the circuit board and connecting wires. Just find out the problem and eliminate it.
The answer is applicable to Chigo NEW-GD9F 1H3 air conditioner.