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AC blows cold, but turn on/off randomly.

subdural · 2025-06-05 06:52

306E2 Mini Hyd Excavator E2W03692​ trying to figure out what to start with looking into this issue. The AC worked great for months, however now over last week the AC turn on - blows cold - blows full fan. but then it all shuts off/down. few moments later - but seems to be random, it will click on again. the AC will run for 3 seconds to 10 min then turn on/off again. thank you.

Replies8
  1. #1HarleyHappy2025-06-05 08:17

    Sounds like a breaker is being tripped and it’s resetting itself. Need to check wiring.

  2. #2Vetech632025-06-05 09:53

    The whole system shuts down? Blower Fan, a/c cutch?

  3. #3HeavyMetalRepair2025-06-05 09:58

    And every time it comes back on it works good/blows cold? Does it have some kind of auto climate control setting?

  4. #4HarleyHappy2025-06-05 12:56

    Sounds like your condenser is freezing up.

  5. #5subdural2025-06-05 18:38

    if it was the breaker, where do i start with wires for that- under the seat? the whole system does shut down - like no fan and no AC. then it restarts. i thought i could have heard a relay at one time ticking on and then ticking off. every time it blows - yes good cold air. There isnt any auto-climate setting from any of the controls that i can see. if the condensor was freezing up id think it would run a bit. this 'symptom' starts from a cold start - or can condensor freeze up in a few minutes? thanks for all the help, i just dunno what to start tearing into.

  6. #6ianjoub2025-06-05 19:03

    If the blower shuts off it is a control or control wiring issue. It isn't the compressor/condenser/evaporator. It may help to see if the compressor clutch is engaged when the blower shuts off.

  7. #7Nige2025-06-05 19:04

    An electrical schematic is what you need. Check your message inbox.

  8. #8KenMac2025-06-05 20:40

    I've never seen a condenser freeze up. Evaporator, yes. It wil not kill fan if frozen. Suction line would ice over as well back to comprssor. Easy visual check for this. I think your problem is electrical also.