to download LG Multi V Plus - Hawco
to download LG Multi V Plus - Hawco
to download LG Multi V Plus - Hawco
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Troubleshooting Guide<br />
Error No. Error Type Error Point Main Reasons<br />
79*<br />
Master 791<br />
Slave1 792<br />
Slave2 793<br />
Fan Starting Failure<br />
Error<br />
Copyright ©2007 <strong>LG</strong> Electronics. Inc. All right reserved.<br />
Only for training and service purposes<br />
Fan Mo<strong>to</strong>r initial starting failure<br />
■ Error Diagnosis and Countermeasure Flow Chart<br />
Is fan mo<strong>to</strong>r assemble<br />
condition normal?<br />
Yes<br />
Are the resistance<br />
Between each phase and insulation<br />
resistance of mo<strong>to</strong>r output<br />
terminal normal?<br />
Is fan mo<strong>to</strong>r connection<br />
condition normal?<br />
Is fan PCB assembly normal?<br />
Yes<br />
Recheck power and<br />
installation condition<br />
Measuring fan mo<strong>to</strong>r phase<br />
resistance<br />
Fan mo<strong>to</strong>r wire connection<br />
No<br />
No<br />
No<br />
No<br />
Check ODU fan mo<strong>to</strong>r assemble condition and locking<br />
→ Reassemble or replace if abnormality found<br />
- 128 -<br />
1.Fan mo<strong>to</strong>r defect/ assemble condition abnormal<br />
2.Fan mo<strong>to</strong>r connec<strong>to</strong>r misconnection(Hall sensor,<br />
U,V,W ouput)<br />
3.Fan PCB defect<br />
1. Check resistance between each mo<strong>to</strong>r output terminal<br />
(16.8 Ω ±5% at 75°C)<br />
2. Check insulation resistance between ODU fan mo<strong>to</strong>r terminal(U,V,W) and pipe<br />
(over 100MΩ)<br />
→ Replace fan mo<strong>to</strong>r if abnormality found<br />
1. Check if color of mo<strong>to</strong>r output terminal(U,V,W) connec<strong>to</strong>r matched with PCB’s<br />
2. Check wire disconnection and wiring<br />
→ Reassemble or replace if abnormality found<br />
Check fan PCB assembly IPM normal<br />
→ Replace Fan PCB assembly<br />
Measuring insulation resistance<br />
between fan terminal & chassis<br />
Hall Sensor connection<br />
Fan wire wiring<br />
<strong>LG</strong>E Internal Use Only
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