LG MULTI V 5 Manual Book page 49
Hide thumbs
Also See for MULTI V 5:
- Service manual (236 pages) ,
- Data manual (162 pages) ,
- Engineering manual (105 pages)
Table of Contents
Advertisement
Error
Error Type
Error Point
No.
23*
Error No.
Error Type
Error Point
Master
231
Slave1
Inverter Compressor DC
DC Voltage isn't charged
232
Inverter PCB DC Link
DC Voltage isn't charged
Link Low Voltage
after starting relay on
23*
Slave2
Low Voltage
after starting relay on
233
Slave3
234
n Error Diagnosis and Countermeasure Flow Chart
Are there any power wire
No
connections normal?
Yes
No
Is input voltage normal?
Yes
No
Is bridge diode normal?
Yes
No
Is DC_Link Wire connection
condition normal?
Yes
No
Is Inverter PCB assembly
bridge diode joining condition normal?
Yes
No
Is Inverter PCB assembly
normal?
Yes
Recheck power and installation condition
Copyright ©2017 LG Electronics. Inc. All right reserved.
Only for training and service purposes
096
_TROUBLE SHOOTING GUIDE BOOK
Main Reasons
Main Reasons
1. DC Link terminal misconnection/terminal
1. DC Link terminal misconnection/ter-
contact fault
minal contact fault
2. Condenser damage
2. Condenser damage
3. Comp PCB assembly damage
3. PCB assembly damage
(DC Link voltage sensing part)
(DC Link voltage sensing part)
4. Input voltage low
4. Input voltage low
1. Check R/S/T/N wiring conditions
→ Rewire them if abnormality found.
Check
R~S/S~T/T~R phase voltage is 380 V(-10 %)~415 V(+10 %)
R~N/S~N/T~N phase voltage is 220 V(-10 %)~240 V(+10 %)
→ Check connection condition and wiring if power is
abnormal
1. Check joining condition of bridge diode and heatsink
2. Check bridge diode
→ joining again or replacing bridge diode
if abnormality found
1.Check Inverter PCB assembly P,N connector
connection condition
2. Check wire disconnection and wiring
→ Reassemble if abnormality found
Check joining condition of Inverter PCB assembly and
bridge diode
→ joining again if abnormality found
Check Inverter PCB assembly IPM normality.
→ Replace Inverter PCB assembly if abnormality found.
- 112 -
LGE Internal Use Only
* Check DC_Link Connector joining condition
IPM
• DC Link Connector
Copyright ©2017 LG Electronics. Inc. All right reserved.
Only for training and service purposes
* Measuring input voltage
R(L1)
S(L2)
T(L3)
N
- 113 -
LGE Internal Use Only
097
_
- Quick Links:
- Error Code Display
- Error Code Check
Hide quick links:
Advertisement
Table of Contents
