Midea ATOM B Series Service Manual page 65

Atom B Series VRF 50/60Hz
2.16 HF: Indoor unit and outdoor unit program mismatch (For all models)
2.16.1 Digital display output
HF
2.16.2 Description
 Indoor unit and outdoor unit program mismatch.
 The system stops running.
 Error code is displayed on the unit with the error.
2.16.3 Trigger / recover condition
 Trigger condition: Indoor unit and outdoor unit program mismatch.
 Recover condition: Indoor unit and outdoor unit program match.
 Reset method: Resume automatically.
2.16.4 Possible causes
 Indoor units and outdoor unit program mismatch.
2.16.5 Procedure
64
HF
Replace indoor units with Atom series
indoor units