Code xH0: Communication error between main control chip and inverter driver chip

Manual restart required: No Display: Displayed on the unit with the error Note: 'x' is a placeholder for the compressor system — 1 = compressor system A, 2 = compressor system B (e.g. 1H0 / 2H0). Description: 1H0 indicates a communication error between the main control chip and the compressor A inverter driver chip. 2H0 indicates a communication error between the main control chip and the compressor B inverter driver chip. All units stop running. Error code is only displayed on the unit with the error. Trigger condition: Main control chip and inverter driver chip cannot communication for 2 minutes. Recover condition: Communication go back to normal. Reset method: Resume automatically. Possible causes: - Incorrect compressor inverter module address setting. - Loosened communication wiring from the main PCB to - the inverter module. - Main PCB damaged. - Compressor inverter module damaged.