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Error Code
The A3 error code indicates abnormal drainage in your Fujitsu air conditioning system. This could mean a blockage in the drainage line or a malfunction with the drainage pump.
Dust, debris, or algae growth can block the drainage system.
Ice formation in the drainage system may block water flow.
The drainage pump could be malfunctioning and unable to expel water properly.
Inspect the drainpipe for any visible clogs or debris.
If the drainpipe is frozen, allow it to thaw before attempting to clear it.
If the pump appears faulty, it may need to be replaced.
Your manual may provide specific instructions on how to clean the drainpipe or pump.
