Sleeper AC not blowing 2021 Freightliner Cascadia (2024)

Is the fan working? Does it blow at all? No? Blower motor. Check your fuses first.

Yes, it’s blowing, but it’s hot air. Under the hood, there may be some heater valves. There would be two, one for the front blower, one for the rear. Turn the rear valve (you will see the water lines going towards the sleeper while the other stops at the firewall) off and see what f it blows cool now.

Sleeper AC not blowing 2021 Freightliner Cascadia (2024)
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