El 01 (Indoor And Outdoor Units Communication Error Diagnosis And Solution) - MrCool DIY-MULTI2-18HP230C Service Manual

8.2 EL 01(Indoor and outdoor unit communication error diagnosis and solution)
Description: Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this condition
happens 4 times continuously.
Recommended parts to prepare:
• Indoor PCB
• Outdoor PCB
• IPM module board
• Reactor
Troubleshooting and repair:
 Troubleshooting 28 