Technician using diagnostic equipment on a split-system air conditioning unit

Air Conditioning Fault Finding

Methodical diagnosis to find the real cause of a problem — not just treat the symptoms.

Air Conditioning Fault Finding

When a system isn't cooling, keeps switching off, or is showing an error code, guesswork wastes time and money. We take a structured approach to fault finding — inspecting, testing and measuring before recommending any repair — so you get an accurate diagnosis and know exactly what's involved in putting it right.

Signs You May Have a Fault

• Little or no cooling or heating

• Ice or frost forming on the indoor or outdoor unit

• Water leaking from the indoor unit

• Unusual noise or vibration

• Error or fault codes on the controller

• System switching off unexpectedly or short-cycling

• Tripping the electrical circuit breaker

• Reduced airflow from vents

• Rising energy bills with no change in use

Our Fault-Finding Process

• Discussion of symptoms and system history

• Visual inspection of indoor and outdoor units

• Electrical testing of components and connections

• Operating pressure and temperature readings where relevant to the reported fault

• Leak detection using appropriate F-Gas-compliant methods where leakage is suspected

• Airflow and performance measurement

• A clear explanation of findings before any repair work goes ahead

Common Faults We Diagnose

• Refrigerant leaks or loss of charge

• Faulty compressors or fan motors

• Blocked condensate drains and leaks

• Failed capacitors and electrical components

• Sensor and control-board faults

• Blocked or heavily fouled coils restricting airflow

• Installation-related drainage, insulation, vibration or pipework problems

Repair or Replace?

Not every fault is worth repairing. Once we've diagnosed the problem, we'll give you a straightforward view of the options — factoring in the age of the system, the cost and availability of parts, and the type of refrigerant it uses. Where a repair isn't economically worthwhile, we'll tell you plainly rather than replacing parts on a system that isn't worth the investment.

Book a Fault-Finding Visit

Tell us what the system is doing and we'll arrange a visit to get to the bottom of it.