Allied 4DHV Mini-Split Series - Error Codes and Troubleshooting; Error Code E2 Diagnosis

508067-01Issue 2016Page 64 of 75
Error Code: E2
Description: Zero crossing detection error diagnosis and solution
General Note: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time
interval is abnormal.
Check the connecons and
power supply.
Is it normal?
NO
YES
Indoor main PCB is defecve. Replace
indoor main PCB.
Correct the connecons. Turn on the
unit when the power supply is good.