ELECTRIAL HELP FOR AC

Discussion in 'General RVing' started by BOATRIDE, Jun 26, 2005.

  1. BOATRIDE

    BOATRIDE New Member

    RUN THE AC WITH GENERATOR IT KICKS THE BREAKER ON THE GEN. NOT IN THE CAMPER CHECK BOTH BREAKERS IN CAMPER AND GEN. NO PROBLEM, WILL RUN FOR A AWHILE THAN KICK AT THE GEN. CAN HERE IT POP AT THE BREAKER PANEL BUT DOES NOT KICK IT JUST ON THE GEN. ALSO DOOES IT WHEN THE CAMPER IS PLUGGED UP TO THE HOUSE WILL RUN FOR AWHILE THAN KICK THE HOUSE BREAKER NOT THE CAMPER. THE AC IS COLD AAND HAS NO SHORT THAT YOU CAN SEE...ONLY DOES IT WITH THE AC
     
  2. Kirk

    Kirk Senior Member

    ELECTRIAL HELP FOR AC

    It sounds like the most likely problme is a combination of the air conditioner drawing too much current and bad breakers on the RV distribution panel. But, the problem may also be that there is some other load that is drawing enough that with the air conditioner as well, the two together cause the power to overload the genset or the breaker in the house. You don't say what the size of breaker is that is being tripped, as compared to those on the power distribution panel of the RV? I suggest that you try opening all of the breakers on your RV's power panel except the one for the air conditioner. Then test the air on both shore power and the genset. If all other breakers are open, you will then know that the air conditioner is the load causing the problem. To go much farther once you know that, you will need to have a clamp on, amp meter to know just what the load is at different points in the circuit.

    A few questions that might help. What is the rating of the circuit breakers for the air conditioner? Do you have one, or two air conditioners? What size of genset do you have and what make is it? Do you have 30A or 50A shore power cord and is it plugged into an outlet that is rated for the full supply that it can draw?
     
  3. Ed H.

    Ed H. New Member

    ELECTRIAL HELP FOR AC

    I was mulling this one over in my head and came up with a probable cause. It sounds like the A/C compressor is short-cycling. If the unit runs and cools for a while, this could be the scenario:
    1) The A/C starts and cools
    2) The thermostat satisfys and stops the compressor
    3) The thermostat calls for cooling again before the refrigerant pressure can equalize
    4) The compressor tries to start under a heavy load and trips the breaker
    This can be caused by either a faulty thermostat or restricted air flow. Check to see if your unit has an air filter. If it does, clean it. Make sure the evaporator coil is clean,
    As to why the breaker trips at the generator or the house and not the trailer, make sure they are of the time-delay type. Some trip at the first sign of overload, but an HCR rated breaker will carry a small overload for several seconds to allow a motor to start.
     

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