Troubleshooting Tripped Circuit Breaker

In case your air conditioner or warmth pump unit is the offender that triggered a tripped circuit breaker in your home or workplace, there are a couple of potentialities why this occur.

The earth leakage circuit breaker(ELCB) that journeys the complete energy provide to the home when a lightning strike can simply be restored by switching the lever again to the ON place.

Within the case of a defective air conditioner gear, the ELCB might journey attributable to earth leakage. On this case, you will have to isolate the reason for the fault or restore the gear earlier than energy provide could be restored to the complete home.

If the miniature circuit breaker(MCB) journeys, the fault may very well be attributable to overcurrent or quick circuit. Rectify the issue and energy on the MCB.

These circuit breakers are safety gadgets that shield {the electrical} circuitry from additional harm with out which hearth hazard and electrical shocks might occurred.

Tripped Circuit Breaker Due To Earth Leakage

Listed here are a number of the doable causes of earth leakage that trigger the earth leakage circuit breaker to journey.

Compressor – The motor wires within the compressor touching the steel enclosure of the compressor. The wires of the motor might come off attributable to extreme vibration or fault in design.

As soon as these wires which can be linked to the new circuits touched the steel enclosure which is grounded, present will stream to the bottom inflicting the ELCB to journey.

Disconnect the ability and all of the circuits to the terminal of the compressor. Use a multimeter and set the size to measure resistance. Examine the resistance between every of the terminal to the enclosure.

If the studying is near zero, that implies that the uncovered wire closest to that terminal has touched the steel body. Restore the fault or change the compressor earlier than the gear could be operated once more.

Fan Motor – Equally, if the fault is because of the compressor fan motor or indoor blower motor, disconnect the ability and isolate the circuits to the motor. Examine the resistance of every terminal to the casing(if steel). Whether it is near zero, that implies that the uncovered wire is touching the casing inflicting it to journey. Take away the motor for restore or change with a brand new motor earlier than the gear could be operational once more.

Wires Shorted – In circuits which have dwell, impartial and earth wires bundled collectively, there’s a chance that the insulator of the wires breaks down (attributable to overheating, faults, underneath specs or inferior wires) inflicting the dwell or impartial conductor to the touch the earth conductor. This can trigger the circuit breaker to journey too. Hassle taking pictures this downside is extra sophisticated because it entails not only a specific element however the electrical circuits.

Tripped Circuit Breaker Due To Overcurrent

Typically, the miniature circuit breaker tripped after working the air conditioner for a while attributable to over-current. This downside will take extra time to troubleshoot as the issue doesn’t occur instantly. Listed here are the doable causes.

Unfastened Wire Connection – Disconnect the mains energy earlier than checking the connecting energy from the mains to the gear. For instance, if there are 3 terminals that join the ability to the compressor, open up the housing and test the connection.

Look out for darkend or black spots on the terminal indicating that overcurrent had occurred.  A free connection will trigger arching therefore drawing extreme provide and damaging the wires and the components which can be linked to it.

Tightened the connection after eradicating and reconnecting the wire that has been broken attributable to overheating.

A qualify technician will often have the ability to troubleshoot this downside by utilizing a tong clamp ammeter to measure the present of that specific conductor.

Compressor Locked – If the compressor has a mechanical half that malfunction inflicting it to lock, the present to function will probably be a couple of instances greater than the conventional operation. When this occur repeatedly, the potential for over-current to occur will occurred inflicting the circuit breaker to finally tripped after a sure interval of operation.

Section Loss – If the compressor or fan motor makes use of a 3-phase induction motor, a lack of one section will trigger overheating to happen when working at full load. If the thermal overload safety doesn’t journey, the circuit breaker will journey if the present exceeded its specification. A superb design will often has a section loss protector constructed into the circuit to forestall the motor from working within the first place.