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.
New install cooling issue traced to swapped control wires
Aircon case in Bukit Panjang, Singapore: post-service issue traced to two indoor-to-outdoor signal wire pairs were swapped after targeted diagnosis checks.
New installation not cold due to undercharge at handover
Aircon case in Tampines, Singapore: post-service issue traced to refrigerant charge significantly below specification — unit undercharged during installation after targeted diagnosis checks.
No airflow traced to blower blockage, not fan motor
Aircon case in Kallang/Whampoa, Singapore: airflow traced to heavy blower-wheel buildup causing severe airflow restriction after targeted diagnosis checks.
No airflow traced to burnt fan motor, not simple blockage
Aircon case in Jurong West, Singapore: airflow traced to indoor fan motor burnt out — open circuit on winding test after targeted diagnosis checks.
Not cold after servicing traced to partially closed valve
Aircon case in Bedok, Singapore: post-service issue traced to service valve left partially closed after routine service after targeted diagnosis checks.
Not cooling traced to capacitor fault, not compressor failure
Aircon case in Jurong West, Singapore: electrical/control traced to failed run capacitor — compressor motor intact after targeted diagnosis checks.
One ducted zone warm due to jammed damper linkage
Aircon case in Central Area, Singapore: airflow traced to jammed branch damper linkage serving the study room after targeted diagnosis checks.
One room not cold traced to room-side restriction, not low gas
Aircon case in Queenstown, Singapore: airflow traced to indoor coil and airflow restriction in the affected room only after targeted diagnosis checks.
Outdoor noise at night traced to mounting vibration, not compressor
Aircon case in Woodlands, Singapore: noise/vibration traced to hardened mounting rubber and loose bracket hardware amplified vibration noise after targeted diagnosis checks.
Outdoor unit dead, compressor failure confirmed after checks
Aircon case in Choa Chu Kang, Singapore: cooling loss traced to open compressor winding confirmed by resistance test after targeted diagnosis checks.
Outdoor unit error traced to PCB fault after capacitor ruled out
Aircon case in Jurong East, Singapore: electrical/control traced to outdoor PCB driver circuit fault — no output signal to compressor after targeted diagnosis checks.
Outdoor unit not running traced to contactor relay fault
Aircon case in Punggol, Singapore: electrical/control traced to contactor relay fault in the outdoor control path after targeted diagnosis checks.
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