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Larger split system air con gets power from the external unit while smaller air con gets power from the internal unit. Can you find any power switch or power socket/plug around the external or internal units?
The fuses, if installed, should be in the unit connected to the power supply/point. The other unit will be connected to the first unit. So if there is no sign of power, as in this case, we need to verify if power is available in the unit that connect to the power supply/point.The fuses, if installed, should be in the unit connected to the power supply/point. The other unit will be connected to the first unit. So if there is no sign of power, as in this case, we need to verify if power is available in the unit that connect to the power supply/point.
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in most cases like this (circuit breaker tripping at compressor switch On ) compressor is burnt out ! A Meg ohms test Leakage to earth would confirm this
Want to install split unit aircon in my caravan but see it only has a 16amp breaker, would this be able to run fridge, kettle and aircon at the same time?
Split system Air conditioners are very often on two or more separate breakers, with a control voltage (24vac commonly) connecting their operation. the condensor unit and out-door fan generally on a 220 vc 'paired' breaker, possibly a quick disconnect near the unit with fuses inside, or an independant breaker pair, and the evaporator unit with INDOOR fan on a 110 or 220 vac breaker.
switch the fan to 'ON' at the thermostat... this is the midpoint of the system electrically. If the fan comes on check for voltage at the condensor unit. a check to see if the thermostat is the problem... remove the thermostat and connect the red, green and either the white or yellow wires (not both) if you chose white you should have heat...yellow AC...
most split system AC have a small buss fuse on the control circuit board of the indoor unit. looks like a glass tube with metal caps held by metal clips. In 40+ yrs experience I have found it is more likely one or both of the 30 amp buss fuses near the outdoor unit (replace both even if one is still ok) or a 30 amp breaker in the quick disconnect box.
In many systems the control voltage to the thermostat derives from a transformer in the outdoor unit... it could be as simple as a broken wire. Without a full diagnostic, a complete description of the unit ( AC or heat pump, etc) this is all speculation
check your circuit breaker or fuse, then check to see if the compressor itself has a circuit breaker, it may have tripped, if it is humming you may need a new start capacitor, also check your switch
Disconnect the heating element,remove lower panel and take the 2 wires off the heater and tape.Reset the breaker and turn it on,if it's ok you know the heaters bad if not let me know.
Generally when an ac trips the main breaker and the breaker its self isn't bad, the compressor is going bad or is bad. To check you will need to do an ohms test on the compressor. If you get a reading of less than infinite, then the compressor is bad. You will need to test every lead going to the compressor which is usually 3 unless you have a crank house heater installed but they are not typical on a small unit. If the compressor has gone bad it is possible the it took the board out as well.
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