INVENTOR O3MVO32-12 Service Manual

Troubleshooting
 Page 75 
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.
Correct the connections. Turn on the
unit when the power supply is good.
NO
Indoor main PCB is defective. Replace
indoor main PCB.
YES
Is it normal?

INVENTOR O3MVO32-12 Specifications

General

Brand	INVENTOR
Model	O3MVO32-12
Category	Air Conditioner
Language	English