Service and Parts Manual Models Indoor Units MW18Y3H MW18Y3H Outdoor Units MR24Y3H MR24Y3H
CUSTOMER SATISFACTION and QUALITY ASSURANCE Friedrich is a conscientious manufacturer, concerned about customer satisfaction, product quality, and controlling warranty costs. As an Authorized Service Provider you play a vital role in these areas. By adhering to the policies and procedures you provide us with vital information on each warranty repair you complete.
SP EC IFIC A TION S ELECTRICAL DATA Cool & heat inverter TYPE INDOOR UNIT MW24Y3H MW18Y3H OUTDOOR UNIT MR24Y3H MR18Y3H COOLING CAPACITY 18,000 BTU/h 5.28 kW 22,000 BTU/h 6.50 kW HEATING CAPACITY 21,600 BTU/h 6.30 kW 27,600 BTU/h 8.10 kW POWER SOURCE 208 V / 230 V 208 V / 230 V 60 Hz 60 Hz Cooling 6.3 A 7.9 A Heating 8.0 A 10.5 A Cooling 1.38 kW 1.76 kW Heating 1.80 kW 2.38 kW FREQUENCY RUNNING CURRENT INPUT WATTS E.E.R. Cooling 13.0 BTU/kW 3.83 kW/kW 12.5 BTU/kW 3.
D IM E N SION S INDOOR UNIT Unit : inch (mm) 12-5/8" (320) 39-1/4" (998) 9" (228) Drain pipe diameter Inside : 5/8 inch (16 mm) Outside : 1-3/32 inch (28 mm) Liquid pipe diameter : 3/8 inch (9.52 mm) Gas pipe diameter : 5/8 inch (15.
OUTDOOR UNIT Unit : inch (mm) 35-1/2" (900) 13" (330) 3"(77) 1/2" (12) 3/8" (9) 7/8" (21) 17-3/8" (440) 32-3/4" (830) 1-1/4" (31) 15-3/4" (400) 25-5/8" (650) 7-3/4" (196) 3-7/8" (99) 14-5/8" (370) Air Flow 5-3/4" (147) 6-3/4" (170) 4
R EFR IGER A N T SYSTEM D IA GR A M 3-Way valve (Large) Heat exchanger ( INDOOR ) 3-Way valve (Small) Compressor Muffler Sub-accumulator Pressure switch Strainer Expansion valve 4-Way valve Heat exchanger ( OUTDOOR ) Strainer Cooling flow Heating flow Refrigerant pipe diameter Liquid : 3/8" (9.52 mm) Gas : 5/8" (15.
TERMINAL BOARD THERMAL FUSE 102 BLACK 6 5 4 3 2 1 5 4 3 2 1 6 5 4 3 2 1 5 4 3 2 1 7 6 5 4 3 2 1 5 4 3 2 1 2 1 2 1 6 5 4 3 2 1 6 5 4 3 2 1 1 2 RED 3 TM4 TM2 TM1 WHITE WHITE WHITE WHITE WHITE WHITE RED WHITE CN201 7 6 5 INDICATOR 4 PCB ASSY 3 2 1 WIRED REMOTE CONTROL ( OPTION ) 7 6 5 4 3 2 1 BLACK BLACK WHITE RED THERMISTOR ( ROOM TEMP. ) 3 3 2 2 1 1 BLACK BLACK THERMISTOR ( PIPE TEMP.
7 TERMINAL BOARD THERMAL FUSE 102 BLACK 6 5 4 3 2 1 5 4 3 2 1 6 5 4 3 2 1 5 4 3 2 1 7 6 5 4 3 2 1 5 4 3 2 1 2 1 2 1 6 5 4 3 2 1 6 5 4 3 2 1 1 2 RED 3 TM4 TM2 TM1 WHITE WHITE WHITE WHITE WHITE WHITE RED WHITE CN201 7 6 5 INDICATOR 4 PCB ASSY 3 2 1 WIRED REMOTE CONTROL UNIT ( OPTION ) 7 6 5 4 3 2 1 BLACK BLACK WHITE RED THERMISTOR ( ROOM TEMP. ) 3 3 2 2 1 1 BLACK BLACK THERMISTOR ( PIPE TEMP.
IN D OOR P C B C IR C U IT D IA GR A M CONTROL UNIT MW18Y3H : EZ-0090HHSE MW24Y3H : EZ-0090KHSE TERMINAL BOARD N OUTDOOR UNIT 1 L 2 SERIAL 3 THERMAL FUSE 102 EARTH EARTH TERMINAL W5 GREEN INDICATOR PCB ASSEMBLY K05CY-0902HSE-D0 TM1 TM4 TM2 22007 22007 22007 RED WHITE BLACK CONTROLLER PCB ASSEMBLY MW18Y3H : K08CX-0903HSE-C1 MW24Y3H : K08CX-0904HSE-C1 WIRED REMOTE CONTROL UNIT CN6-1 RED CN6-2 WHITE CN6-3 BLACK CN201 JB20-07HG CN11 B07B-PASK CN2 SJH20-05WS 1 CN11-1 RED 1 2 CN11-2
9 C22 0.1 2 3 1 RED WHITE JP SWITCH BLACK L7 BLm18 12V 5 4 3 2 1 JP5 0R0 C12 0.1 3 12V 1 3 2 R17 10k <1/10W> D3 DAN217U 5V R20 1.0k <1/10W> 12V R21 15.4k <1/10W> 1% R22 28k <1/10W> 1% C16 0.1 C15 0.1 2 3 2 3 + 6 5 + C21 0.1 L1 SS1V-R060330 1 4 C20 C17 + C18 + 0.1 330/ 10/ 25V 25V 12V R14 1.0k <1/10W> O R13 1.0k <1/10W> 2 G C14 0.01 C13 0.01 W5 C7 0.1 1 1 16 C23 0.
INDOOR UNIT INDICATOR PCB ASSEMBLY K05CY-0902HSE-D0 5V 5V D201 SLR-325MC 1 GREEN 2 3 D202 SLR-325DC 4 ORANGE GREEN D203 SLR-325MC C201 0.
11 THERMISTOR ( PIPE TEMP. ) THERMISTOR ( DISCHARGE TEMP. ) THERMISTOR ( OUTDOOR TEMP. ) THERMISTOR ( COMP. TEMP. ) PRESSURE SWITCH 4-WAY VALVE EXPANSION VALVE DC FAN MOTOR M F. M. 1 2 BLACK UL1015 AWG20 BLACK BLACK BROWN BROWN BLUE BLUE BROWN BROWN RED RED 1 YELLOW RED CN65 1-1971032-3 ( G I C2.0-3P ) CN63 3-1971032-3 ( G I C2.0-3P ) 1 2 3 WHITE CN62 1971032-3 ( G I C2.0-3P ) BLUE CN64 2-1971032-3 ( G I C2.0-3P ) RED CN90 1-1871843-2 ( G I C2.
12 RED W4 WHITE 12V THERMISTPR ( COMPRESSOR TEMP. ) BLUE CN64 G I C2.0-3P THERMISTPR ( OUTDOOR TEMP. ) WHITE CN62 1971032-3 ( G I C2.0-3P ) THERMISTPR ( DISCHARGE TEMP. ) YELLOW CN63 3-1971032-3 ( G I C2.0-3P ) THERMISTPR ( PIPE TEMP. ) RED CN65 1-1971032-3 ( G I C2.0-3P ) 3 1 2 3 2 1 3 2 1 3 2 1 2 1 RED 5 4 3 2 1 6 RED CN90 1-1871843-2 ( G I C2.
13 WN VN UN WP VP UP -8V +15V WHITE 1 2 3 4 5 6 7 15V N C308 + 47/ 35V -8V I P M-G C301 9 0.1 8 CN301 1971032-9 POWER-G P C300 0.1 1 - + 2 5 4 3 2 1 CN303 1971032-5 WHITE 3 1 2 R80 5.6k C73 <1/10W> 1% 330p R108 4.3k <1/10W> 1% 2 3 - 1 I P M-GND R107 39k <1/10W> 1% R81 33k <1/10W> 1% R69 120k <1/3W> 1% R70 120k <1/3W> 1% R71 150k <1/3W> 1% L70 D100 LL25XB60 D70, D71 DAN217Ux 2 POWER-G C72 470p C71 C70 0.
14 AC VOLT OUT EARTH N TO I NDOOR UNIT L N POWER SOURCE L WHITE W20 B BLACK W19 B GREEN W3 B WHITE W18 B BLACK W17 B F100 5.00A 250V WHITE W2 B BLACK W1 B C100 3.3 F101 5.00A 250V SA100 RA-302M VA100, VA101 470V x2 C101, C102 0.033 x2 2 3 L100 RCH3818-022PF07 1 4 C104, C105 0.022 x2 OUTDOOR UNIT MR18Y3H POWER SUPPLY PCB ASSEMBLY K09DH-0904HUE-FL0 C103 3.3 W21 B GRAY BLACK CT OUT W9 B 2 3 L101 RCH3818-022PF07 1 4 C106 3.
15 AC VOLT OUT EARTH N TO I NDOOR UNIT L N POWER SOURCE L WHITE W20 B BLACK W19 B GREEN W3 B WHITE W18 B BLACK W17 B F100 5.00A 250V WHITE W2 B BLACK W1 B C100 3.3 F101 5.00A 250V SA100 RA-302M VA100, VA101 470V x2 C101, C102 0.033 x2 2 L100 RCH3818-022PF07 1 4 3 C104, C105 0.022 x2 OUTDOOR UNIT MR24Y3H POWER SUPPLY PCB ASSEMBLY K09DH-0900HUE-FL0 C103 3.3 W21 B GRAY BLACK CT OUT W9 B 2 3 L101 RCH3818-022PF07 1 4 C106 3.
OUTDOOR UNIT MR18Y3H CAPACITOR PCB ASSEMBLY K05FB-0902HUE-P0 W12 B P WHITE W7 B YELLOW C201 660/ 450V C203 660/ 450V + + W13 B N W8 B BLUE VIOLET POWER_G MR24Y3H CAPACITOR PCB ASSEMBLY K05FB-0903HUE-P0 W12 B P WHITE C200 - C202 660/ 450V x3 + + + W13 B N W8 B BLUE VIOLET POWER_G 16 W7 B YELLOW
ER R OR D E TEC TION Error Serial signal error Indoor unit thermistor error Outdoor unit thermistor error Indoor unit control error Outdoor unit control error Indoor fan motor error Refrigerant cycle error Optional function error Model information error Display Error Operation Timer LED LED Normal 2 flash Serial signal (reverse) error, at operation start up 3 flash Serial signal (reverse) error, during oeration 4 flash Serial signal (forward) error, at operation start up 5 flash Serial si
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P A R TS INDOOR UNIT 5 4 5 2 4 3 Ref Descriprion Part number 1 Front Panel Total Assy 67201282 2 Front Panel 67201791 3 Intake Grille Assy 67201501 4 Air Filter 67201502 5 Clamper Grille 67200936 -- Remote 67201294 -- Remote Holder 67201533 1 19
16 INDOOR UNIT 17 18 19 23 20 25 26 21 27 24 22 20 11 Ref Descriprion Part number Ref 11 Casing Assy 67201281 21 Louver U 67201565 16 Drain Cap 67201509 22 Louver Z 67201566 17 Drain Hose Assy 67201560 23 Diffuser U 67201562 18 Bush B 67201561 24 Diffuser Z 67201563 19 Spacer B 67201507 25 Spring C 67201564 20 R and L Louver 67201506 26 Piller A 67201277 27 Joint B 67201274 -- Fan Guard 67201271 -- Fan Guard Holder Right 67201289 -- Fan Guard Hol
INDOOR UNIT 33 37 35 36 34 32 39 38 Ref Descriprion 31 Part number 31 Evaporator Total Assy 67201283 32 Water Seal 67201552 33 Evaporater Holder R 67201515 34 Evaporater Holder L 67201516 35 Rear Bracket 67201553 36 Filter Guide 67201554 37 Filter Guard 67201555 38 Crossflow Fan Assy 67201504 39 Bearing C Assy 67200922 40 Room Therimistor Holder 67201280 40 21
42 41 INDOOR UNIT 43 50 45 46 51 44 47 Ref Descriprion Part number 41 Controller PCB (18) 67201299 41 Controller PCB (24) 67201380 42 Control Box 67201567 43 Control Cover 67201568 44 Motor Case 67201569 45 Terminal Earth 67201570 46 DC Brushless Motor 67201571 47 Motor, Step 67201526 48 Motor, Step 67201527 49 Motor, Step 67201528 50 Terminal 67201381 51 Indicator PCB Assy 67201298 Pipe Thermistor 67201574 -- Controller PCB includes a room thermistor.
1 PA R TS OUTDOOR UNIT 5 6 Ref.
OUTDOOR UNIT 13 12 14 15 11 17 Ref.
OUTDOOR UNIT 26 30 28 29 21 32 Ref.
49 42 OUTDOOR UNIT 51 Connector : Orange Connector : Blue 43 Connector : Green Connector : Red 47 48 44 52 46 53 Ref.
FRIEDRICH AIR CONDITIONING CO. 10001 Reunion Place, Ste. 500, San Antonio, TX 78216 (210) 546-0500 877-599-5665 x 261 FAX (210) 546-0630 Email: tac@friedrich.com www.friedrich.com Printed in the U.S.A.
