Fault Phenomenon: Palazzani HT29 telescopic boom aerial work platform cab air conditioner blows hot air, does not cool.

Troubleshooting Process:
– Checked refrigerant: refrigerant leak.
– Checked compressor: compressor not working.
– Checked condenser: condenser clogged.
– Checked fuse: fuse blown.

Root Cause: The AC compressor electromagnetic clutch coil is burnt or there is a refrigerant leak.

Required Parts: AC compressor clutch or refrigerant recharge.