Why is my aircon indoor unit running but the outdoor unit is not?

The indoor fan can continue operating even when the outdoor unit has a power supply problem, faulty capacitor, damaged fan motor, PCB fault or compressor issue. A technician needs to inspect the system to identify the actual cause.

Can I use my aircon if the outdoor unit is not running?

It is not recommended to continue operating the aircon if the outdoor unit remains inactive and the system is not cooling. Switch it off and arrange an inspection, especially if there are unusual noises, burning smells or electrical problems.

Does a faulty capacitor cause the outdoor unit not to start?

Yes. A faulty capacitor can prevent compatible fan or compressor motors from starting. However, inverter aircon systems may use different electronic starting arrangements, so proper diagnosis is necessary.

Why does my outdoor aircon fan stop spinning?

The outdoor fan may stop because of a faulty motor, electrical connection, control board, obstruction or protective shutdown. Some inverter systems also vary fan speed or stop the fan temporarily depending on operating conditions.

How much does it cost to repair an outdoor aircon unit in Singapore?

The cost depends on the fault. Capacitor replacement, fan motor replacement, PCB repair and compressor replacement have different costs. Letscool Aircon repair services start from $50, with the final repair quotation depending on the actual diagnosis and parts required.

Should I replace my compressor if the outdoor unit is not running?

Not necessarily. A compressor may fail to start because of a capacitor, electrical supply, wiring, PCB or protective shutdown issue. Have the system tested before deciding on compressor replacement.

Can dirty outdoor coils cause an aircon to stop working?

Yes. A heavily contaminated condenser coil can restrict heat transfer and contribute to overheating or protective shutdowns. Professional inspection and suitable cleaning may help restore normal operation if dirt is the cause.

How long does outdoor aircon repair take?

Simple component repairs may be completed during one appointment if the required parts are available. More complex electrical, PCB or compressor repairs may take longer, particularly when parts need to be ordered.

Does an outdoor unit need regular servicing?

Yes. The outdoor condenser, fan and electrical components should be checked as part of suitable aircon maintenance. The service frequency depends on the installation environment, usage and equipment condition.

Can low refrigerant stop the outdoor unit from running?

Some aircon systems can stop the compressor or outdoor unit when abnormal refrigerant pressure or temperature conditions are detected. However, low refrigerant is not the only possible cause. A technician should check the refrigerant circuit and identify any leak before adding gas.