A SERVICE OF

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9
Procedure
Pressthepiping/wiringcorrectionswitch(SW871)1minuteormoreafter
turningonthepowersupply.
• Correction completes in 10 to 15 minutes. When the correction is com
-
pleted,itsresult
isshownbyLEDindication.Detailsaredescribedin
the following table.
• To cancel this function during its operation, press the piping/wiring cor-
rectionswitch
(SW871)again.
• When the correction completed without error, do not press the piping/
wiringcorrectionswitch(SW871)again.
When the result was “cannot be corrected”, press the piping/wiring cor
-
rectionswitch
(SW871)againtocancelthisfunction.Then,conrmthe
wiringandpipingcombinationinaconventionalmannerbyoperatingthe
indoorunitsonebyone.
• The operation is done while the power is supplied. Make sure not to
contactpartsotherthantheswitch,includingtheP.C.board.Thismay
causeelectricshockorburnbyhotpartsandlivepartsaroundthe
switch.ContactingthelivepartsmaycauseP.C.boarddamage.
• To prevent electronic control P.C. board damage, make sure to per
-
form static
elimination before operating this function.
• This function does not operate when the outside temperature is 0°C
(32°F)orbelow.
4-4. EXPLANATION TO THE USER
• Using the OPERATING INSTRUCTIONS, explain to the user how to
use the air conditioner (how to use the remote controller, how to re-
movetheair
lters,howtoremoveorputtheremotecontrollerinthe
remotecontrollerholder,howtoclean,precautionsforoperation,etc.)
• Recommend the user to read the OPERATING INSTRUCTIONS care-
fully.
LED indication during detection:
LED
1(Red) 2(Yellow) 3(Green)
Lighted Lighted Blinking
Result of piping/wiring correction function
LED
Result
1(Red)
2(Yellow) 3(Green)
Lighted Not lighted
Lighted Completed(Correctedsuccessfully)
Blinking Blinking Blinking Cannot be
corrected
Other indications
Refer to “SAFETY PRECAUTIONS
WHEN LED FLASHES” located
behind the service panel.
4-3. TEST RUN
• Be sure to perform the test run for each unit. Make sure each indoor
unitoperatesproperlyfollowingtheinstallationmanualattachedtothe
unit.
• Ifyou
performthetestrunforallindoorunitsatonce,youcannotde-
tectanyerroneous
connection,ifany,oftherefrigerantpipesandthe
indoor/outdoor unit connecting wires.
About the restart protective mechanism
Onc
e the compressor stops, the restart preventive device operates so the
compressor will not operate for 3 minutes to protect the air conditioner.
Wiring/piping correction function
This unit
has a wiring/piping correction function which corrects wiring
andpipingcombination.Whenthereispossibilityofincorrectwiringand
pipingcombination,andconrmingthecombinationisdifcult,usethis
functiontodetectandcorrectthecombinationbyfollowingtheproce
-
dures below
.
Make sure that the following is done.
• Power is supplied to the unit.
• Stop valves are open.
Note:
Duringdetection,theoperationoftheindoorunitiscontrolledbytheout-
doorunit.
Duringdetection,theindoorunitautomaticallystopsoperation.
This is not a malfunction.
SG79Y871H02.indb 9 9/7/2007 1:09:45 PM