E9

Indoor Overload Protection (Heating Mode)

Description

In heating mode, the indoor unit's coil temperature has risen too high, so the air conditioner activated overload protection and reduced or stopped operation.

Appliance Error Codes Details

Error Code
E9
Error Name
Indoor Overload Protection (Heating Mode)
Appliance Type
air_conditioner
Brand
Haier
Severity
medium

Additional Troubleshooting

1. Turn off the unit and allow it to cool down for a few minutes before restarting
2. Ensure indoor air vents and filters are clean and unobstructed
3. Contact a service technician if the protection triggers repeatedly

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