Midea VRF Series User Manual

V6R VRF 50/60Hz
149
Part
6
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Diagnosis and Troubleshooting
2.34 U4: Indoor unit refrigerant pipe and signal cable connection are inconsistent
Digital display output
Description
 Indoor unit refrigerant pipe and signal cable connection are inconsistent.
 All units stop running.
 Error code is only displayed on the master unit.
Trigger / recover condition
 Trigger condition:
Indoor unit refrigerant pipe and signal cable connection are inconsistent.
 Recover condition:
Indoor unit refrigerant pipe and signal cable connection are consistent.
 Reset method: Manually restart.
Possible causes
 Indoor unit refrigerant pipe and signal cable connection are inconsistent.
Procedure
U4
Check the indoor unit refrigerant pipe
and signal cable connection are correct.

Midea VRF Series Specifications

General

Compressor Type	Inverter Scroll Compressor
Type	Variable Refrigerant Flow (VRF)
Refrigerant	R410A
Control	Centralized control, individual control
Indoor Unit Types	Wall mounted, cassette, ducted, floor standing
Energy Efficiency	High energy efficiency with DC inverter technology
Indoor Unit Noise Level	19 dB(A) to 45 dB(A)