H8
Tosot
Indoor Drain Pump or Water Level Protection
Indoor unit displays H8, water leakage protection active on some models
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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
Failed internal condensate pump (if equipped), Blocked drain line causing pan overflow, Faulty water level sensor, Kinked pump discharge hose
How to Fix / Troubleshooting
Safety first: Turn off power before working near water and electrical components.
- Check drain line: Ensure the gravity drain is clear and properly sloped.
- Inspect pump (if present): Access the internal drain pump and check for blockages in the pump or discharge hose.
- Test pump: Pour water into the pan and see if the pump activates (with power on and covers in place). If not, the pump or level sensor may be faulty.
- Replace faulty components: Replace the drain pump or water level sensor as needed.
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Repair Difficulty
Medium
3/5
Required Part
Internal Condensate Drain Pump
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