My AC on my 94 C220 only works intermittently. If it's really warm & humid, only warm air blows out of the vents. If the temp is reasonable, I get cool air coming from the vents. I just had the system recharged, so it has a full load of R134a, and the compressor is OK.
Does anyone have an idea of what the problem may be?

Thanks
Darko

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Darko Vusir
1994 C220