

If your air conditioner keeps tripping the power, circuit breaker or safety switch, there is usually an underlying electrical or air conditioning fault that needs to be identified.
Resetting the breaker repeatedly is not a repair. If the air conditioner trips the power again after being reset, leave the system switched off and arrange professional fault diagnosis.
Deadshort Services takes a repair-first approach. Our air conditioning and electrical technicians can investigate whether the fault is within the air conditioner, the electrical circuit or a combination of both, then explain the available repair options.
For broader air conditioning fault diagnosis and repairs, visit our air conditioning service and repair Adelaide page.
South Australian Owned – Licensed Air Conditioning & Electrical Technicians – Repair-First Diagnosis – Same-Day Attendance Where Available – RAA Trade Assist Provider
An air conditioner can trip a circuit breaker or safety switch for several reasons.
Possible causes include:
• Compressor faults
• Fan motor faults
• Failed or deteriorating capacitors
• Electrical wiring faults
• Damaged electrical components
• Control-board faults
• Moisture or water affecting electrical components
• Excessive electrical current
• Short circuits
• Earth leakage faults
• Problems with the dedicated air conditioning circuit
• Circuit breaker faults
The breaker is designed to protect the electrical circuit. When it repeatedly trips, the cause should be diagnosed rather than bypassed or repeatedly reset.
If the circuit breaker has tripped, you can check whether other electrical equipment in the property is operating normally.
The air conditioning breaker can generally be reset once.
If the air conditioner trips it again:
• Switch the air conditioner off
• Do not continue resetting the breaker
• Do not remove electrical covers
• Do not attempt to bypass the circuit breaker or safety switch
• Arrange professional fault diagnosis
If you notice burning smells, smoke, damaged wiring, unusual noises or excessive heat around electrical equipment, leave the system switched off.
For broader electrical fault information, visit our electrical repairs Adelaide page.
If the circuit breaker trips as soon as the air conditioner starts, the fault may be associated with a component that operates during the start-up sequence.
Possible causes include:
• Compressor faults
• Failed capacitor
• Fan motor problems
• Electrical short circuit
• Damaged wiring
• Contactor or relay faults
• Control-board problems
The exact cause cannot be determined from the timing of the trip alone.
Electrical testing and air conditioning fault diagnosis may be required to determine which component is causing the excessive current or electrical fault.
Some systems start normally but trip the breaker after operating for several minutes.
This can indicate a fault that becomes more noticeable as the equipment heats up or operates under load.
Possible causes include:
• Compressor overheating
• Fan motor overheating
• Restricted airflow
• Dirty outdoor coil
• Electrical components deteriorating under load
• Loose electrical connections
• Refrigeration-system problems increasing compressor load
If the system repeatedly runs for a similar period before tripping, tell the technician approximately how long it operates before the fault occurs. This information can assist with diagnosis.
Yes. A compressor fault can cause an air conditioner to draw excessive electrical current and trip the circuit breaker.
However, a breaker tripping does not automatically mean the compressor has failed.
Other electrical components can create very similar symptoms.
Before recommending a major component replacement, Deadshort Services aims to diagnose the actual fault and determine whether the existing air conditioner can be economically repaired.
A faulty capacitor can affect the starting or operation of motors and compressors in some air conditioning systems.
Symptoms may include:
• Air conditioner struggling to start
• Outdoor fan not operating correctly
• Compressor not starting
• Humming or unusual noises
• Intermittent operation
• Circuit breaker tripping
Capacitors are electrical components and should be tested and replaced by appropriately qualified technicians.
Yes. A damaged or failing indoor or outdoor fan motor can create an electrical fault or draw excessive current.
Other symptoms may include:
• Fan not starting
• Fan operating intermittently
• Grinding or unusual noises
• Reduced airflow
• Outdoor unit overheating
• Air conditioner not cooling properly
For broader troubleshooting where the system is also not cooling or operating correctly, visit our air conditioner not working Adelaide page.
A safety switch and a circuit breaker perform different protective functions.
A safety switch may operate where electrical current is leaking to earth, while a circuit breaker generally protects wiring and equipment against excessive current and electrical faults.
If operating the air conditioner repeatedly trips a safety switch, possible causes can include:
• Damaged wiring
• Moisture affecting electrical equipment
• Compressor electrical faults
• Fan motor faults
• Damaged insulation
• Internal component faults
The system should remain switched off until the cause has been investigated.
If an air conditioner begins tripping electrical protection after heavy rain or after developing a water leak, moisture may be involved.
Possible areas requiring investigation include:
• Outdoor electrical connections
• Isolators
• Wiring
• Control components
• Condensate drainage
• Indoor electrical components
If the air conditioner is also leaking water, visit our air conditioner leaking water Adelaide page.
Do not operate equipment where water is visibly affecting electrical components.
A split-system air conditioner can trip the breaker because of faults in either the indoor or outdoor equipment.
Possible causes include:
• Outdoor compressor faults
• Outdoor fan motor faults
• Indoor fan faults
• Capacitor problems
• Damaged wiring
• Control-board faults
• Communication faults
• Electrical circuit problems
Because the indoor and outdoor units work together, testing may be required across both sections of the system.
For more information about these systems, visit our split system air conditioning Adelaide page.
Ducted air conditioning systems can also develop electrical faults that cause circuit breakers or safety switches to trip.
Possible causes include:
• Compressor faults
• Indoor or outdoor fan motor faults
• Electrical control faults
• Zone-control problems
• Damaged wiring
• Capacitor faults
• Excessive electrical load
• Problems within the dedicated air conditioning circuit
Because ducted systems involve equipment in several locations, including roof spaces and outdoor units, systematic fault diagnosis is important.
For more information, visit our ducted air conditioning Adelaide page.
Yes.
Not every air conditioner that trips the power has a fault within the air conditioning equipment itself.
The problem may involve:
• Circuit breaker condition
• Electrical wiring
• Loose connections
• Damaged isolators
• Circuit capacity
• Electrical supply issues
• Previous electrical alterations
This is one of the advantages of Deadshort Services having both air conditioning and electrical technicians.
Where required, we can investigate both sides of the problem rather than assuming the fault is automatically within the air conditioner.
A circuit breaker or safety switch that continues to operate is responding to a fault or abnormal electrical condition.
Repeatedly resetting it without identifying the cause may allow damaged equipment to continue operating and can make diagnosis more difficult.
Stop using the air conditioner and arrange professional inspection where:
• The breaker trips repeatedly
• A safety switch trips when the air conditioner starts
• There is a burning smell
• Electrical equipment feels unusually hot
• The system makes unusual noises
• Water is near electrical equipment
• The system starts and then repeatedly shuts down
Do not bypass circuit protection or replace a circuit breaker with a higher-rated breaker in an attempt to stop it tripping.
Deadshort Services charges a diagnosis fee to attend and investigate air conditioning faults.
Depending on the symptoms, our technician may inspect or test:
• Electrical supply to the system
• Circuit breaker and circuit protection
• Air conditioning isolator
• Electrical connections
• Compressor operation
• Indoor and outdoor fan motors
• Capacitors and electrical components
• Controllers and sensors
• Control boards
• Wiring between indoor and outdoor equipment
• Operating current and system performance
• Fault or error codes
The aim is to determine why the electrical protection is operating before parts or components are replaced.
Where the repair is practical and suitable parts or materials are available, we can proceed with your approval.
Where additional parts, labour or further work are required, we can provide a quote before proceeding.
Air conditioning tripping faults are one of the clearest examples of where two trades can overlap.
Deadshort Services provides both licensed air conditioning and electrical services, allowing us to coordinate the fault investigation where required.
This may include:
• Air conditioning technicians for equipment and refrigeration faults
• Electrical repairs Adelaide for circuits, wiring, breakers and electrical supply faults
This helps determine whether the problem is within the air conditioner, the electrical installation or both.
An air conditioner developing a fault does not automatically mean it needs replacing.
The right decision depends on:
• The actual fault
• Age and condition of the equipment
• Repair cost
• Availability of parts
• Previous breakdown history
• Energy efficiency
• Refrigerant and system condition
• Whether the existing system still suits the property
Deadshort Services takes a repair-first approach where practical.
If the air conditioner can be economically and reliably repaired, we will explain the repair option.
Where equipment is badly damaged, unsupported or no longer economical to repair, we can discuss suitable air conditioning replacement and installation options.
Deadshort Services can diagnose faults across a range of commonly installed air conditioning systems.
These include:
• Wall split systems
• Multi-split systems
• Ducted reverse cycle air conditioning
• Evaporative cooling systems
• Suitable commercial air conditioning equipment
For broader information about our complete air conditioning services, visit our air conditioning Adelaide page.
Regular servicing cannot prevent every electrical failure, but it can help identify developing issues and maintain correct airflow and system operation.
Restricted airflow, dirty coils and poorly performing components can increase the workload on an air conditioning system.
For regular maintenance information, visit our air conditioning service Adelaide page.
If your air conditioner continues tripping a circuit breaker or safety switch, Deadshort Services can investigate the system and explain the available repair options.
For our complete repair service, visit air conditioning service and repair Adelaide.
For broader information about our services, visit air conditioning Adelaide.
For local coverage, visit air conditioning near me.
Possible causes include compressor faults, fan motor problems, failed capacitors, damaged wiring, electrical component faults or problems with the air conditioning circuit. The actual cause should be diagnosed before components are replaced.
No. The breaker can generally be reset once. If the air conditioner trips it again, leave the system switched off and arrange fault diagnosis rather than repeatedly resetting the circuit protection.
A fault occurring during start-up may involve the compressor, capacitor, fan motor, wiring or another electrical component. Testing is required to identify which component is responsible.
Some faults appear only after components warm up or operate under load. Possible causes include overheating motors, compressor faults, restricted airflow, loose connections or deteriorating electrical components.
Yes. A failed or deteriorating capacitor can affect the starting or operation of motors and compressors and may contribute to electrical faults or breaker tripping.
Yes. Compressor electrical faults can cause excessive current or other electrical problems. However, breaker tripping does not automatically mean the compressor has failed, so diagnosis is important before major repairs are recommended.
A safety switch may operate where electrical current is leaking to earth. Possible causes include damaged wiring, moisture, compressor faults, fan motor faults or other electrical component problems.
Yes. The electrical circuit, connections or circuit breaker can sometimes be responsible rather than the air conditioner itself. Deadshort Services can investigate both the air conditioning equipment and associated electrical supply where required.
Yes. Moisture affecting electrical components, wiring or connections can cause electrical protection to operate. If water is visible near electrical equipment, leave the system switched off until it has been inspected.
Yes. Deadshort Services charges a diagnosis fee to attend, inspect the system and identify the likely cause of the fault. Once diagnosed, we can complete repairs where practical and approved or provide a quote for further work.
Some faults can be repaired during the initial visit where the problem has been identified and suitable parts or materials are available. Where additional parts or further work are required, we can provide a quote before proceeding.
Not necessarily. Many electrical and component faults can be repaired. Replacement is generally considered where the system is badly damaged, unreliable, unsupported or no longer economical to repair.
Yes. Deadshort Services provides air conditioning fault diagnosis and repairs across metropolitan Adelaide for split systems, ducted air conditioning and other suitable air conditioning equipment.
Deadshort Services provides air conditioning and electrical fault diagnosis across Adelaide for systems that repeatedly trip circuit breakers, safety switches or electrical protection.
Our combination of air conditioning and electrical services means we can investigate both the equipment and the electrical circuit where required.
For local service in your area, visit our air conditioning near me page.
If your air conditioner keeps tripping the power, circuit breaker or safety switch, Deadshort Services can diagnose the fault and explain the available repair options.
Our approach is simple: identify the fault first, repair where practical and consider replacement only where it makes better long-term sense.
Book Air Conditioning Fault Diagnosis Online
Or call (08) 8410 0887.


