A0: Emergency Shutdown - Midea VRF Series Service Manual

V6R VRF 50/60Hz

2.27 A0: Emergency shutdown

Digital display output
Description
 Compressor discharge insufficient superheat protection.
 All units stop running.
 Error code is only displayed on the master unit.
Trigger / recover condition
 Trigger condition:
The port of CN91 on the outdoor main PCB has short-circuited；
Received the emergency shutdown instructions from centralized controller.
 Recover condition:
The port of CN91 on the outdoor main PCB disconnects.
Cancel the emergency shutdown instructions from centralized controller.
 Reset method: Resume automatically.
Possible causes
 Outdoor main PCB damaged.
 Instructions of centralized controller
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