Midea
Heat Pump Heating Failure
Indoor unit runs but no heating in HEAT mode; air is cool or only slightly warm
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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
Reversing valve stuck or not energized, Low refrigerant charge, Outdoor coil heavily frosted, Faulty four-way valve coil on outdoor unit
How to Fix / Troubleshooting
Safety first: Turn off power before touching outdoor components.
Steps to check:
- 1. Confirm mode: Ensure the unit is in HEAT mode and temperature is set higher than room temperature.
- 2. Check outdoor unit operation: In HEAT mode, the outdoor fan and compressor should run. If only the fan runs or there are unusual noises, note this for the technician.
- 3. Inspect for frost: Look at the outdoor coil. A light frost is normal, but a solid block of ice indicates defrost or refrigerant issues.
- 4. Power cycle: Turn the system off for 10 minutes, then restart in HEAT to see if heating resumes briefly.
When to call a technician: Heating failures usually require a technician to test the reversing valve coil, defrost control, and refrigerant charge.
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Repair Difficulty
Hard
4/5
Required Part
Reversing Valve Coil
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