h8
Moderate
Daikin · Mini-Splits & Ductless Systems
Compressor Current Sensor Fault
Quick Answer
Error code H8 on your Daikin Mini-Splits & Ductless Systems means: Compressor Current Sensor Fault. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Locate the compressor current sensor (CT) on the outdoor PCB or compressor wiring
2
Check the sensor connector for proper seating on the outdoor PCB
3
Verify the CT is properly clamped around the compressor power lead
4
Measure compressor current independently with an external clamp meter to verify actual current draw
5
Replace the current sensor if it is not providing accurate readings. A licensed HVAC technician should perform this repair
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Compressor current sensor (CT)
Outdoor PCB (if sensing circuit failed)
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