Friedrich MW18C3F Service Manual
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SPLIT TYPE

ROOM AIR CONDITIONER

WALL MOUNTED
Models
Indoor unit
Outdoor unit
MW18C3F MR18C3F
CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . .1
OUTLINE AND DIMENSIONS. . . . . . . . . . . . 2
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . 4
ERROR CONTENTS . . . . . . . . . . . . . . . . . .
DISASSEMBLY ILLUSTRATION . . . . . . . . . 11
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . 14
STANDARD ACCESSORIES . . . . . . . . . . . . 16
type
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Summary of Contents for Friedrich MW18C3F

  • Page 1: Table Of Contents

    Models Indoor unit Outdoor unit MW18C3F MR18C3F CONTENTS SPECIFICATIONS ..... .1 OUTLINE AND DIMENSIONS... . 2 REFRIGERANT SYSTEM DIAGRAM .
  • Page 2: Specifications

    SPECI FICAT I ON S TYPE COOLING ONLY INVERTER INDOOR UNIT MW18C3F OUTDOOR UNIT MR18C3F COOLING CAPACITY 18,000 Btu/h (5.28 kW) ELECTRICAL DATA 208 - 230 V POWER SOURCE FREQUENCY 60 Hz 7.7 A RUNNING CURRENT INPUT WATTS 1.73 kW E.E.R.
  • Page 3: Outline And Dimensions

    DI M E N SI O NS Models : MW18C3F / MR18C3F unit : inch (mm) 8-7/16 31-1/8 (790) (215) 20 (508) 13/16 (20) 21-1/4 (540) 4-15/16 (125) 2-5/8 11-13/16 31-1/8 (790) (66) (300) 2006.03.06...
  • Page 4: Refrigerant System Diagram

    R E F R IG ER ANT SYSTE M D IA G R A M Model : MW18C3F / MR18C3F Heat exchanger ( INDOOR ) 3-Way valve 2-Way valve Muffler Sub-heat exchanger ( INDOOR ) Strainer Expansion valve 4-Way valve...
  • Page 5: Circuit Diagram

    C IRC U I T DIA GRAM Model : MW18C3F / MR18C3F CN201 WHITE WHITE WHITE WHITE INDOOR UNIT WHITE WHITE ORANGE YELLOW STEP MOTOR PINK BLUE BLUE YELLOW BLACK WHITE BLACK BLACK PIPE TEMPERATURE THERMISTOR FAN MOTOR BLACK BLACK...
  • Page 6: Indoor Pcb Circuit Diagram

    I NDO OR P C B CI RC UI T D I A GR AM Model : MW18C3F CONTROL UNIT EZ-005EWSE TERMINAL BOARD SERIAL OUTDOOR UNIT EARTH EARTH TERMINAL BLACK WHITE B3B-XASK CN11 B2B-XH TERMINAL FUSE EX-OUT CN12 EXTERNAL COMMUNICATION CONNECTOR...
  • Page 7 Model : MW18C3F CONTROLLER PCB ASSEMBLY K04CP-0504WSE-C1 R29 10K <1/10W> B3B-XASK 13.5V BD4842 R44 1K NJM7805 R39 10K R28 10K <1/10W> D1F60 <1/10W> TERMINAL BOARD <1/10W> R42 49.9K VOUT <1/10W> <F> 330/ (1%) <F> 330/ HEAT EXCHANGER WHITE BLACK <F>...
  • Page 8 Model : MW18C3F D206 SLR-325 CN201 D204 SLR-325 D203 SLR-325 C201 D201 SLR-325 <F> R201 <1/4W> I C201 GP1UM261R C202 2006.02.28...
  • Page 9: Outdoor Pcb Circuit Diagram

    O UTD OO R PCB CI RCUIT DI A GR A M Model : MR18C3F INVERTER ASSEMBLY EZ-005SHUE EMI FILTER REACTOR UL3271 AWG16 UL1015 AWG14 BLACK UL3271 AWG16 ( A-1 ) WHITE WHITE C. M. UL1015 AWG14 UL3271 AWG16 WHITE ( B-1 ) BLACK BLACK...
  • Page 10 Model : MR18C3F CONTROLLER PCB ASSY K05CM-0507HUE-C1 F100 C100-C102 660/450V x 3 15A-250V DC V U V W AC208 - 230V R200 39 L300 REACTOR <1/2W> D102 ELC0607RA 60Hz BET 3.15A-250V 1NH42 W7 W8 W9 U1JU44 x 3 LL25XB60 x 2 PFC5000 R103 -0702F...
  • Page 11: Error Contents

    ER R O R C O NTEN TS Model : MW18C3F Display Error Error Operation Timer LED 2 flash Serial signal (reverse) error, at operation start up 3 flash Serial signal (reverse) error, during oeration Serial signal error Normal 4 flash...
  • Page 12: Disassembly Illustration

    D IS A S S EMB LY ILL USTRA T ION Model : MW18C3F 2006.05.12...
  • Page 13 Model : MW18C3F 2006.06.08...
  • Page 14 Model : MR18C3F 2006.04.07...
  • Page 15: Parts List

    PARTS LIST INDOOR UNIT Ref. Part No. Ord. Description MW18C3F Q'ty Air Filter 67201200 Holder (Filter) 67201256 Clamper (Grille) 67201257 Front Panel 67200936 Intake Grille Assy 67201230 Gear-A 67201202 Casing Assy 67201206 Crossflow Fan Assy 67201233 Clamp (Motor) 67201258 Shaft Holder-C Assy...
  • Page 16 OUTDOOR UNIT Ref. Part No. Ord. Description MR18C3F Q'ty Top Panel Assy 67201400 Top Panel Seal 67201401 Cabinet Sub Assy 67201402 Blow Down Grille 67201403 Cabinet Right Assy 67201472 Fan Ring 67201405 Grip 67201406 Switch Cover Assy 67201407 4-Way Valve 67201408 Expansion Valve Assy 67201409...
  • Page 17: Standard Accessories

    STA NDAR D A CCESSORIE S Part No. Name and Shape MW18C3F Wall hook bracket 9310001004 Remote control unit 9315027061 Remote control unit holder 9305642045 Battery (penlight) 0600185534 Cloth tape 9310519004 Tapping screw (big) 4 x 25) 0700076046 Tapping screw (small)
  • Page 18 0511G2949...

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