Fault Phenomenon: SANY SW936 wheel loader cab interior is stuffy, AC vents not blowing cold air.

Troubleshooting Process:
– Checked condenser: condenser surface clogged with dust and leaves.
– Checked refrigerant: refrigerant leak, low pressure.
– Checked compressor: compressor clutch slipping or not engaging.
– Checked filter: AC filter clogged.

Root Cause: The AC condenser surface is completely clogged with dust, causing poor heat dissipation and system high-pressure protection shutdown or extremely low cooling efficiency.

Required Parts: Clean condenser, recharge refrigerant, replace AC filter.