My tub trips out upon power up was working ok last nite 28/4/2010.
I don't know how you have it wired, but it is possible that the heater is on at the same time the pump starts and trips. The starter windings in the motor need all of 15 or more amps to start, that is why the lights dim when the fridge starts up. Anyway, if the heater is on the same line, same breaker, it needs to be bigger, and in 110 volt mode , you can't go any bigger than 20, but in 220 volt mode, you can go to 60 amp. that would be 30 amps each, potentially. depending on the voltage of each. Last time it worked ok because it wasn't crossing the line with a start up motor and water heater working at the same time. Now that you are totally confused. Check the breaker, see if there are 2. one for the heater, one for the motor. Hope this helps.
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