Midea MHC-V6W/D2N8-B User Manual

M thermal Mono
202004 91
4.21 Inverter module Troubleshooting for three-phase models
Digital display output
Description
 Inverter module protection or high pressure protection.
 M thermal Mono stops running.
 Specific error code L0, L1, L2, L4, L5, L8 , L9 is displayed on the user interface and the refrigerant system main PCB.
Possible causes
 Inverter module protection.
 DC bus low or high voltage protection.
 MCE error(DC bus low or high voltage protection or software over current protection)
 Zero speed protection.
 Excessive compressor frequency variation.
 Actual compressor frequency differs from target frequency.
 High pressure protection.
 Contactor stuck or 908 self checking fail.
Specific error codes for inverter module protection
Table 4-4.4: Specific error codes
Specific error code
Content
L0
Inverter module protection
L1
DC bus low voltage protection
L2
DC bus high voltage protection
L4
MCE error(DC bus low or high voltage protection or software over current protection)
L5
Zero speed protection
L8
Compressor frequency variation greater than 15Hz within one second protection
L9
Actual compressor frequency differs from target frequency by more than 15Hz protection
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Midea MHC-V6W/D2N8-B Specifications

General

Brand	Midea
Model	MHC-V6W/D2N8-B
Category	Air Conditioner
Language	English