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SERVICING
(2.11 Cleaning Indoor Unit Heat Exchanger)
2.11.3 Cleaning 4-Way Cassette Type Indoor Unit
Spread a vinyl sheet over the floor to protect furnitures, etc. from cleaning water before this work.
No.
1
Remove the optional air panel according to the item 2.4.4
"Removing Optional Air Panel".
2
Remove the electrical box after opening the electrical box cover
and disconnecting the connectors between the indoor and outdoor
units and other connectors according to the item 2.4.3
"Removing Electrical Box Cover".
3
Remove the bell-mouth and fan according to the item 2.4.5
"Removing Fan Runner and Fan Motor".
4
Remove the drain pan according to the item 2.4.8
"Removing Drain Pan".
5
Remove the float switch according to the item 2.4.10
"Removing Float Switch".
6
Remove the drain-up mechanism according to the item 2.4.9
"Removing Drain-up Mechanism".
NOTES:
Remove the drain pan after removing drain water on the drain pan.
1. Remove the drain water on the drain pan after pulling out the rubber plug. Check to ensure that water
can flow smoothly through the hole by pricking it with a pencil.
2. Insert the rubber plug into the hole after the above checking.
3. Remove the drain pan after removing four fixing screws. Carefully remove the drain pan, since drain
water may remain at the bottom of the drain pan.
4. Clean and dry the drain pan after removing. Carefully handle the drain pan not to damage it.
2-120
TURN OFF all power source switches.
Procedure
Tool
Phillips Screwdriver
Phillips Screwdriver
Phillips Screwdriver
Adjustable Wrench
Phillips Screwdriver
Phillips Screwdriver
Phillips Screwdriver
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Troubleshooting
