2.12 H0: Communication error between main board and compressor drive board
Digital display output
Description
ï‚§ H0 indicates a communication error between main board and compressor drive board.
ï‚§ All units stop running.
ï‚§ Error code is displayed on the unit with the error.
Trigger / recover condition
ï‚§ Trigger condition: Main control board and inverter driver board cannot communication for 2 minutes.
ï‚§ Recover condition: Communication go back to normal.
ï‚§ Reset method: Resume automatically.
Possible causes
ï‚§ Loosened communication wiring from the outdoor main PCB to the inverter module.
ï‚§ Filter board damaged.
ï‚§ Compressor inverter module damaged.
ï‚§ Outdoor main PCB damaged.