Ariston
Relay Operation Without Compressor Start
Unit emits clicking sounds repeatedly but does not start cooling or heating.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty compressor, Faulty outdoor PCB relay or inverter, Low supply voltage, Locked rotor condition
How to Fix / Troubleshooting
Safety first: Turn off power if repeated clicking occurs to avoid further damage.
- Step 1 – Check supply voltage: Ensure the household voltage is stable and within the specified range.
- Step 2 – Observe outdoor unit: When the indoor unit clicks, check if the outdoor fan or compressor attempts to start. If not, the issue is likely in the outdoor unit.
- Step 3 – Technician diagnosis: A technician should test compressor windings, measure starting current, and check the outdoor PCB relays or inverter module. Replacement of the compressor or outdoor PCB may be required.
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Repair Difficulty
Professional Required
5/5
Required Part
Outdoor Main Control Board (PCB)
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