Gree H5 error code: intelligent power module protection

What Does Error H5 Mean?

Gree identifies H5 as intelligent power module protection caused by an IPM synchronization or overcurrent condition; the protection can have airflow, refrigerant, wiring, board, or compressor causes. Applies to: Gree residential inverter systems covered by the OEM guide H5 as described here follows the Gree technical guide for residential inverter systems. Protection codes are tied to a specific drive design, so confirm the service manual for your model before treating this as the definition, and never assume a Gree code carries across to another manufacturer. Owner-safe checks: Turn the system off and look for a blocked return filter or obvious debris restricting the outdoor coil. | Record whether H5 appears immediately or only after the compressor begins operating. Qualified technician: Refrigerant pressure, compressor winding, DC bus, and live-voltage tests are technician work. | Do not replace a board or compressor until the root operating condition is confirmed.