E2 (Zero Crossing Detection Error Diagnosis And Solution) - Kaisai FLY INVERTER Series Service Manual

5.4

E2 (Zero crossing detection error diagnosis and solution)

Description: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time
interval is abnormal.
Recommended parts to prepare:
• Connection mistake
• Faulty PCB
Troubleshooting and repair:
Check the connections and
power supply.
Is it normal?
indoor main PCB.
Correct the connections. Turn on the
unit when the power supply is good.
Page 75