How to Solve the Issue of Nissan Sylphy's AC Freezing Without Pump Shutoff?

[StHarmony]

First, check whether the air conditioning pipeline pressure is too high. Excessive pipeline pressure can make it difficult for the electromagnetic clutch to engage, leading to overcurrent protection. Inspect the electromagnetic clutch circuit for poor contact. The current is relatively high during operation, and it is not uncommon for the circuit to measure normally but malfunction during operation. Finally, check whether there is an issue with the electromagnetic clutch itself. Generally, there are no other problems. If it is a constant-temperature air conditioning system, also consider whether there is an issue with the control module.