The indoor unit shows H8; the unit may stop; this is sometimes associated with low-pressure or refrigerant issues.

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.

Possible Causes

Refrigerant leak in the indoor or outdoor coil, blocked expansion device, faulty low-pressure sensor or switch, severely restricted airflow causing coil freeze.

How to Fix / Troubleshooting

Safety: Do not attempt to open the refrigerant circuit without proper certification. Always turn off the power before inspection.

Steps:

1. Check indoor airflow: Clean filters and ensure supply and return air paths are unobstructed.
2. Inspect for ice: Look at the indoor coil for ice buildup. If present, turn off the unit and let it thaw completely.
3. Visual leak check: Look for oil stains on refrigerant piping, coils, and joints, which may indicate leaks.
4. Professional service: H8 usually requires a technician to check system pressures, locate leaks, repair them, and recharge the system according to Airwell specifications.

Repair Difficulty

Professional Required 5/5

Required Part

Refrigerant Circuit (Low Pressure Sensor / Expansion Device)

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