Judge the system without fluorine Vn

Mitsubishi air conditioner is not cooling. Beijing Mitsubishi Air Conditioning After-sales Service Telephone. The operation light and the 18 light flash simultaneously, and the air conditioner cannot be turned on.

Analysis and Maintenance: Check the power voltage at 390V, balanced pressure at 0MPa, it can be determined that the system is out of refrigerant, and the whole machine has low-pressure protection. After opening the casing of the outdoor unit for inspection, oil stains were found at the welding point of the condenser distributor, which was caused by a cracked weld leading to refrigerant leakage. After re-welding and adding refrigerant, it returned to normal.

Technical Summary of Beijing Mitsubishi Air Conditioning Repair Center.

Tip: If the system pressure is zero during operation, it can be immediately judged that the system has leaked refrigerant.