Aircon Case Studies
Review real diagnosis journeys to see what was checked, confirmed, and fixed.
All Case Studies
Search by symptom, brand, location, or case outcome pattern.
Portable unit not cooling traced to kinked exhaust and recirculation
Aircon case in Bukit Merah, Singapore: airflow traced to exhaust hose kinked against the wall behind the unit — heat could not exit the room, recirculated back to intake after targeted diagnosis checks.
Portable unit warming up traced to kinked exhaust path
Aircon case in Tampines, Singapore: airflow traced to exhaust recirculation from kinked hose and loose window panel seal after targeted diagnosis checks.
Rainy-day breaker trips traced to water ingress in switch box
Aircon case in Pasir Ris, Singapore: electrical/control traced to rusty outdoor switch box with water entry after targeted diagnosis checks.
Recurring cooling loss traced to hidden Schrader valve leak
Aircon case in Yishun, Singapore: cooling loss traced to hidden leak at the service-port Schrader valve core after targeted diagnosis checks.
Refrigerant top-up loop traced to leak at flare connection
Aircon case in Sengkang, Singapore: cooling loss traced to slow leak at the outdoor flare joint connection after targeted diagnosis checks.
Remote not working traced to receiver path, not indoor PCB
Aircon case in Pasir Ris, Singapore: electrical/control traced to IR receiver path fault causing command signal failure after targeted diagnosis checks.
Repeat top-ups traced to leaking service valve core
Aircon case in Woodlands, Singapore: cooling loss traced to slow leak at outdoor service valve core after targeted diagnosis checks.
Repeated gas loss traced to outdoor pipe-joint leak
Aircon case in Pasir Ris, Singapore: cooling loss traced to refrigerant leak at outdoor unit pipe connection after targeted diagnosis checks.
Repeated gas loss traced to slow leak at flare joint
Aircon case in Clementi, Singapore: cooling loss traced to slow refrigerant leak at indoor flare joint after targeted diagnosis checks.
System-3 one zone warm due to indoor-side restriction
Aircon case in Sembawang, Singapore: airflow traced to evaporator coil and blower wheel heavily fouled in affected indoor unit only — airflow restricted to near zero after targeted diagnosis checks.
System-4 tripping traced to one indoor PCB fault
Aircon case in Queenstown, Singapore: electrical/control traced to faulty indoor PCB in one bedroom unit drawing abnormal current and sending fault signal upstream, triggering outdoor protection trip after targeted diagnosis checks.
Told to replace unit, capacitor fix restored cooling
Aircon case in Sengkang, Singapore: electrical/control traced to run capacitor degraded significantly below rated value — outdoor unit could not start after targeted diagnosis checks.
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