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Noel's avatar
Noel
Explorer
Oct 04, 2018

Dash A/C not working...advice, please ?

This is a 2003 motorhome on a W22 chassis/8.1L engine. Dash A/C is an Evans Tempcon RV218552, R134a. (Evans phone and email worthless).

No cold air comes out when activated. It makes a buzzing sound for 3 seconds..and silence for 5 seconds. Another 3 seconds of buzz and 5 seconds of silence. This goes on forever.

Heater works OK, with same noise/silence cycles.

Any ideas as to what is wrong ?
  • As said above, anyone that fixes AC units can tell you what is wrong. It sounds like the clutch is going on and off maybe from a low charge.
  • I would take it to an AC
    Guy for evaluation.
    Does the clutch engage?
    Does the compressor turn?

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