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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2.2 Fan Mo<strong>to</strong>r<br />
Checking Item Symp<strong>to</strong>m Countermeasure<br />
(1) The fan mo<strong>to</strong>r does not<br />
operate.<br />
Does failure appears<br />
again when starting<br />
operation?<br />
(2) Vibration of the fan<br />
mo<strong>to</strong>r is large.<br />
1) When power supply is<br />
abnormal<br />
2) For wrong wiring<br />
3) For failure of mo<strong>to</strong>r<br />
Copyright ©2007 <strong>LG</strong> Electronics. Inc. All right reserved.<br />
Only for training and service purposes<br />
4) For defective fuse<br />
5) For failure of circuit board<br />
- 63 -<br />
* Modify connection status in front of or at the rear of<br />
the breaker, or if the power terminal console is at<br />
frosting condition.<br />
* Modify the power supply voltage is beyond specified<br />
scope.<br />
* For following wiring.<br />
1. Check connection status.<br />
2. Check contact of the connec<strong>to</strong>r.<br />
3. Check that parts are firmly secured by tightening<br />
screws.<br />
4. Check connection of polarity.<br />
5. Check short circuit and grounding.<br />
* Measure winding resistance of the mo<strong>to</strong>r coils.<br />
Main outdoor unit: INV [19.0±7%Ω(75˚C)]<br />
Sub outdoor unit: Main [22.8±7%Ω(75˚C)]<br />
R1 [34.8±7%Ω(75˚C)]<br />
R2 [3.7±7%Ω(75˚C)]<br />
* Replace the fuse if there is defect (Fuse 800V<br />
30A).<br />
Replace the circuit board in following procedures if<br />
problems occur again when powering on and if<br />
there are no matters equivalent <strong>to</strong> items as specified<br />
in above 1) through 4).<br />
(Carefully check both connec<strong>to</strong>r and grounding<br />
wires when replacing the circuit board.)<br />
1. Replace only fan control boards.<br />
If starting is done, it means that the fan control<br />
board has defect.<br />
2. Replace both fan control board and the main<br />
board.<br />
If starting is done, it means that the main board<br />
has defect.<br />
3. If problems continue <strong>to</strong> occur even after countermeasure<br />
of No.1 and No.2, it means that both<br />
boards has defect.<br />
<strong>LG</strong>E Internal Use Only