Midea Aqua thermal Super Series - Drive Module Failure

Aqua thermal Super
88
Midea Aqua thermal Super Service Manual
6 Drive Module Failure
6.1 Check code table
Error code
Content
Error category
Need to power on again
L10
Overcurrent protection
Overcurrent fault
NO
L11
Transient phase current overcurrent protection
NO
L12
Phase current overcurrent lasts 30s protection
NO
L20
Module over temperature protection
Over temperature fault
NO
L30
Low bus voltage error
Power fault
NO
L31
High bus voltage error
NO
L32
Excessively high bus voltage error
NO
L34
Phase loss error
NO
L43
Current sampling bias is abnormal
hardware fault
NO
L45
Motor code not match
YES
L46
IPM protection (FO)
NO
L47
Module type not match（After module resistance detection）
YES
L50
Startup failure
Control fault
NO
L51
Out of step error（Reserved）
NO
L52
Zero speed protection
NO
L60
Fan motor phase loss protection
Diagnostic fault
NO
L65
IPM short circuit error
NO
L66
FCT detection error
NO
L6A
Open circuit of U-phase upper tube
NO
L6b
Open circuit of U-phase lower tube
NO
L6C
Open circuit of V-phase upper tube
NO
L6d
Open circuit of V-phase lower tube
NO
L6E
Open circuit of W-phase upper tube
NO
L6F
Open circuit of W-phase lower tube
NO
Lb0
High pressure switch motion
Authentication fault
NO
Lb1
Relay adhesion（Reserved）
NO
Lb2
RAM check error（Reserved）
NO
Lb3
ROM check error（Reserved）
NO
Lb4
Register or ALU check error（Reserved）
NO
Lb5
Stack over flow check error（Reserved）
NO
Lb6
Program stream check error（Reserved）
NO
Lb7
Other abnormal check /PED diagnostic errors
NO
Lb8
PED 5V abnormal（Reserved）
NO
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