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The unit would be fused through the circuit breaker it gets power from in the main box of the house or in some cases a sub box to the main house circuit breaker box. If it is tripping the breaker something is seriously wrong and to reset over and over causes a fire risk, call a repair person.
The reason the lights are not flickering and breaker not tripping when 6 pin harness disconnected that goes to roof unit is because the compressor and fan are disconnected, which would be the major draw that causes it. There is a few ways you can narrow down the cause, or defective relay, but my guess is if it's causing lights to flicker and breaker to trip, it's on the compressor circuit. The fan coming on and off unless capacitor faulty wouldn't draw it down that much, and obviously capacitor is good otherwise it wouldn't operate good when turned on normally. I'd start by inspecting wires to and from thermostat for possible rubbing or touching against one another at a bare spot perhaps. Can't rule out 100% that thermostat isn't defective as well. When thermostat set to cooler temperature, and on, does it turn off and on in normal cycles, to maintain temperature?
First check the outlet the unit is plugged into. It may be dead, due to a circuit breaker being tripped. Also, the interior of the outlet may be damaged or has a loose wire.
If a circuit breaker was tripped, unplug the unit before resetting the circuit breaker. Then plug the unit back in and turn it ON. If the breaker trips again, there may be a short in the AC wiring or there is another electric appliance on that same circuit, that may be causing an overload, when the AC unit is ON.
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ok this can be simple or tricky is the breaker that trips the same size as the one in the breaker panel 2.look in the unit itsself see if there r breakers inside the unit there usually are and they might have tripped it might be as simple as flipping a breaker but the problem with the breaker tripping is what concerns me now it may just be undersized or getting weak and finally crapped out get ur meter and flip the breaker on and see if u r getting power to the unit if ur not u have gott a breaker that isnt letting power go thru now if u have power u might have a bad blower motor turn the unit on and calling for the fan on if the fan doesnt start try spinning the blower by hand now if it starts then u probably have a bad capacitor they r usually mounted on the side of the blower housing it is oval and its gonna be a 5mfd(microfarad) or 7.5mfd and that couldve been what was kicking the breaker now if the blower is stuck and it wont turn or its very hard to turn then make sure the blower wheel hasnt slipped on the shaft and is rubbing up against the housing if it is just loosen the set screw and set it back even and tighten it back up now if the wheel is free and its still hard to turn then u have a bad blower motor its not a big deal to change out and not real expensive if this dont help hit me back and well walk thru it hope this gets lil momma and the pets warm have a good day
Normally pump motors are connected on a separate circuit with its own circuit breaker. At your house there is always a electrical control panel housing several circuit breakers for lights, power outlets, range, aircon, motors, etc...Find a tripped off breaker and reset it. To reset the circuit breaker is to switch it to off position and back to on position. Better still you may reset all the circuit breakers except the main circuit breaker (biggest amp rating). After resetting the circuit breakers, try to switch your bathtub pump on, (to test it, if it is still okey). Other- wise, your motor is damaged and you got to have the motor rewinded, to be operational.
It sounds like the unit is tripping the breaker because the breaker is not rated high enough to handle the heaters power usage! If its not that then it may very well be the thermostat needs replaced in unit!
Test at a friends house to see if its your system or the unit!
If the circuit breaker was tripped, more likely the fuse inside the TV power supply might also be blown. If that is the case there might be a short circuit in the power supply components, more likely on a diode or transistor/mosfet.
Contact these website to see if they have the parts for your plasma.
What you have is a 24v control circuit problem. There is a transformer in the air handler ( inside unit ) you will have 220v on the one side and 24v on the other. If you have 24v from transform there is a small fuse on the pc board that could blow during power problems. On the inside cover you should find a wiring diagram.
You must make sure that there is power to both the inside unit and outside unit. Is the room air blower blowing? If not you have either a plugged filter, iced up coil, the access door is not quite closed or there is no power to the unit. Is the outside unit fan turning? If not, you either have no call from the thermostat, the fan is broken or the unit has no power to it. I would turn off the breaker to the inside unit and switch the breaker near the outside unit to off and let them sit idle for 5 minutes. Switch both breakers back on and chect to see if the outside unit turns on. Then check the indoor unit and see if this starts blowing. Let us know what you find.