R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10
76 Troubleshooting
4 Troubleshooting
4.1 HF: not matched with M_Home indoor unit. (Only display on 18kW model)
*Outdoor unit chip refers to 0537 chip.
4.2 E0/E9: EEPROM malfunction (E0 display on 12~16kW model;E9 display on 18kW model)
The malfunction may be caused by two reasons:
1) The EEPROM is not inserted well;2) Outdoor main board is broken.
The communication between indoor unit chip and outdoor unit chip is not matched.
Whether the chip of indoor unit is right or not.
Replace indoor unit or chip of indoor unit
Check whether the model of indoor and outdoor unit is
Replace indoor unit or chip of indoor
Replace outdoor main board
Check whether the EEPROM is inserted well or
not.