York HIDS006B21S Service Manual page 13

4. Maintenance ..........................................................................................................................4-1
4.1 Maintenance of Outdoor Unit ..........................................................................................................4-2
4.2 Maintenance of Indoor Unit .............................................................................................................4-3
4.2.1 Ducted High Static Type ((H,Y)IDH018 - 048B21S) . ..............................................................4-3
4.2.1.1 Removing Long-Life Filter . ................................................................................................4-3
4.2.1.2 Removing PCB .................................................................................................................4-3
4.2.1.3 Removing Fan and Fan Motor ..........................................................................................4-4
4.2.1.4 Removing Thermistors for Liquid Pipe and Gas Pipe .......................................................4-11
4.2.1.5 Removing Electronic Expansion Valve Coil ......................................................................4-12
4.2.1.6 Removing Float Switch .....................................................................................................4-12
4.2.1.7 Removing Condensate Pump ...........................................................................................4-13
4.2.1.8 Removing Condensate Pan ..............................................................................................4-14
4.2.2 Ducted Medium Static Type ((H,Y,C)IDM006 - 048B21S) . .....................................................4-17
4.2.2.1 Removing Long-Life Filter . ................................................................................................4-17
4.2.2.2 Removing PCB .................................................................................................................4-17
4.2.2.3 Removing Fan and Fan Motor ..........................................................................................4-18
4.2.2.4 Removing Thermistors for Liquid Pipe and Gas Pipe .......................................................4-23
4.2.2.5 Removing Electronic Expansion Valve Coil ......................................................................4-24
4.2.2.6 Removing Float Switch .....................................................................................................4-24
4.2.2.7 Removing Condensate Pump ...........................................................................................4-25
4.2.2.8 Removing Condensate Pan ..............................................................................................4-26
4.2.3 Ducted Slim Type ((H,Y,C)IDS006 - 018B21S) ......................................................................4-29
4.2.3.1 Removing Long-Life Filter . ................................................................................................4-29
4.2.3.2 Removing PCB .................................................................................................................4-29
4.2.3.3 Removing Fan and Fan Motor from Bottom Side (For All Models) ...................................4-30
4.2.3.4 Removing Thermistors for Liquid Pipe and Gas Pipe .......................................................4-34
4.2.3.5 Removing Electronic Expansion Valve Coil ......................................................................4-35
4.2.3.6 Removing Float Switch .....................................................................................................4-35
4.2.3.7 Removing Condensate Pump ...........................................................................................4-36
4.2.3.8 Removing Condensate Pan ..............................................................................................4-37
4.3 Cleaning Indoor Unit Heat Exchanger . ............................................................................................4-39
4.3.1 Required Tools for Cleaning . ..................................................................................................4-39
4.3.2 Cleaning Procedure ...............................................................................................................4-40
4.4 Main Parts .......................................................................................................................................4-43
4.4.1 for Outdoor Unit . .....................................................................................................................4-43
4.4.2 for Change-Over Box .............................................................................................................4-43
4.4.3 for Indoor Units . ......................................................................................................................4-44
4.4.3.1 Printed Circuit Board . ........................................................................................................4-44
4.4.3.2 Fan Motor . .........................................................................................................................4-47
4.4.3.3 Thermistor . ........................................................................................................................4-52
4.4.3.4 Electronic Expansion Valve . ..............................................................................................4-54
SM-18001-rev.1
- Table of Contents -
xi