Table of Contents
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FLOOR AND CEILING TYPE AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Model
MCFH-13NV-
(When installed on the floor)
(When installed on the ceiling)
Refer to the Service Manual OB227 REVISED EDITION-B when MCFH-13NV
with MXZ-32RV-
as multi system units.
E1
·MUCFH-13NV-
(WH)
E3
MCFH-13NV -
E3
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. SPECIFICATION·················································4
4. NOISE CRITERIA CURVES ······························ 5
5. OUTLINES AND DIMENSIONS ·························6
6. WIRING DIAGRAM ············································7
7. REFRIGERANT SYSTEM DIAGRAM ················8
8. PERFORMANCE CURVES ································9
9. MICROPROCESSOR CONTROL ····················16
10. SERVICE FUNCTIONS·····································25
11. TROUBLESHOOTING ······································26
12. DISASSEMBLY INSTRUCTIONS·····················35
13. PARTS LIST······················································39
14. OPTIONAL PARTS···········································43
-
is connected
E3
No. OB240
E3
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Table of Contents
Related Manuals for Mitsubishi Electric MCFH-13NV-E3
Summary of Contents for Mitsubishi Electric MCFH-13NV-E3
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Page 1: Table Of Contents
FLOOR AND CEILING TYPE AIR CONDITIONERS No. OB240 SERVICE MANUAL Wireless type Model MCFH-13NV- ·MUCFH-13NV- (WH) (When installed on the floor) CONTENTS 1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS······················2 3. SPECIFICATION·················································4 4. NOISE CRITERIA CURVES ······························ 5 5. OUTLINES AND DIMENSIONS ·························6 6. -
Page 2: Technical Changes
TECHNICAL CHANGES MCFH-13NV - MCFH-13NV - 1. Indoor model name has changed. 2. MCFH-13NV- became possible to connect with MXZ-32RV- as multi system units. MUCFH-13NV - MUCFH-13NV - 1. Outdoor model has changed. PART NAMES AND FUNCTIONS MCFH-13NV - INDOOR UNIT (When installed on the floor) Vertical vanes Horizontal vane... - Page 3 MUCFH-13NV - OUTDOOR UNIT Air inlet (back and side) Piping Drain hose Air outlet Drain outlet MCFH-13NV - REMOTE CONTROLLER Signal transmitting section Operation display section OPERATE/STOP (ON/OFF)button OPERATION SELECT button TEMPERATURE buttons FAN SPEED CONTROL button VANE CONTROL button SWING button ON-TIMER button OFF-TIMER button...
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Page 4: Specification
SPECIFICATION wRefer to the Service Manual OB227 REVISED EDITION-B when MCFH-13NV- is connected with MXZ-32RV- as multi system units. WMCFH-13NV- Model (INDOOR UNIT) MCFH-13NV- Function Cooling Heating Cooling Heating Power supply Single phase, 220-240V, 50Hz Single phase, 220-240V, 50Hz Capacity —... -
Page 5: Noise Criteria Curves
NOISE CRITERIA CURVES MCFH-13NV - MUCFH-13NV - SPL(dB LINE NOTCH SPL(dB LINE NOTCH 46-47 (220-240V) (220-240V) Test conditions, Test conditions, Cooling : DB 27: WB 19:\ Cooling : DB 35: WB 24: Heating : DB 20: WB - Heating : DB 7: WB 6: NC-70 NC-70 NC-60... -
Page 6: Outlines And Dimensions
OUTLINES AND DIMENSIONS MCFH-13NV - INDOOR UNIT Unit : mm (When installed on the floor) 80.8 112.8 50cm or more 50cm or more (When installed on the ceiling) 50cm or more 1100 17.5 Gas line 12.7 Liquid line 6.35 REQUIRED SPACE MUCFH-13NV - OUTDOOR UNIT Outdoor... -
Page 7: Wiring Diagram
WIRING DIAGRAM MCFH-13NV - MODEL WIRING DIAGRAM INDOOR UNIT CIRCUIT BREAKER GRN/YLW RT12 HIC1 LDCOM LDC11 POWER SUPPLY LDC12 ~/N 220-240V 50Hz LDFH SR144 TRANS CN201 GRN/YLW LDFL SR142 LDFM SR143 LDFVL SR141 TO OUTDOOR UNIT 220-240V~ ELECTRONIC CONTROL P.C. BOARD GRN/YLW CONNECTING 12V DC... -
Page 8: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM MCFH-13NV - MUCFH-13NV - INDOOR UNIT OUTDOOR UNIT Reversing valve Refrigerant pipe [12.7 (Option) Muffler (with heat insulator) Stop valve Indoor (with service port) heat Outdoor Distributor Flared connection exchanger heat Strainer exchanger Coil temperature thermistor RT12 Compressor Defrost thermistor... -
Page 9: Performance Curves
PERFORMANCE CURVES MCFH-13NV - The standard data contained in these specifications apply only to the operation of the air conditioner under normal condition, since operating conditions vary according to the areas where these units are installed. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve. - Page 10 OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation 1 Both indoor and outdoor units are under the same temperature/humidity condition. Dry Bulb temperature ( Relative humidity ( ˚C 2 Air flow should be set at MAX. 3 The unit of pressure has been changed to MPa on the international system of units(SI unit system). f •...
- Page 11 PERFORMANCE DATA COOL operation(220V) MCFH-13NV - : MUCFH-13NV - CAPACITY : 3.7 kW INPUT : 1310 W SHF : 0.72 OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.35 2.35 0.54 1048 4.16 2.25 0.54 1100...
- Page 12 PERFORMANCE DATA COOL operation(220V) MCFH-13NV - : MUCFH-13NV - CAPACITY : 3.7 kW INPUT : 1310 W SHF : 0.72 OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.63 1.96 0.54 1284 3.33 1.80 0.54 1362 3.20 1.73 0.54 1389...
- Page 13 PERFORMANCE DATA COOL operation(240V) MCFH-13NV - : MUCFH-13NV - CAPACITY : 3.7 kW INPUT : 1400 W SHF : 0.72 OUTDOOR DB(:) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(:) WB(:) 4.35 2.35 0.54 1120 4.16 2.25 0.54 1176...
- Page 14 PERFORMANCE DATA COOL operation(240V) MCFH-13NV - : MUCFH-13NV - CAPACITY : 3.7 kW INPUT : 1400 W SHF : 0.72 OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) OUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.63 1.96 0.54 1372 3.33 1.80 0.54 1456 3.20 1.73 0.54...
- Page 15 PERFORMANCE DATA HEAT operation(220V) MCFH-13NV - : MUCFH-13NV - CAPACITY : 4.0 kW INPUT : 1130W OUTDOOR DB(:) INDOOR DB(:) INPUT INPUT INPUT INPUT INPUT INPUT INPUT 2.52 3.04 3.56 4.08 1074 4.60 1141 5.08 1175 5.60 1198 2.40 2.88 3.40 1040 3.88...
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Page 16: Microprocessor Control
MICROPROCESSOR CONTROL MCFH-13NV - WIRELESS REMOTE CONTROLLER Once the operation mode are set, the same operation mode can be repeated by simply turning the OPERATE/STOP(ON/OFF) button ON. Indoor unit receives the signal with a beep tone. When the system turns off, 3-minute time delay will operate to protect system from overload and compressor will not restart for 3 minutes. - Page 17 (4) The initial set temperature is decided by the initial room temperature. Model Initial room temperature Initial set temperature 26: or more COOL mode of "I FEEL CONTROL" Initial room temperature 25: to 26: minus 2: Initial room temperature DRY mode of 23: to 25: "I FEEL CONTROL"...
- Page 18 Time control When the three conditions as follows have been satisfied for 1 hour and 45 minutes, compressor stops for 3 minutes. a. Compressor has been continuously operating. b. Indoor fan speed is Lo or Me. c. Room temperature is below 26°C. When compressor stops, the accumulated time is cancelled and when compressor restarts, time counting starts from the beginning.
- Page 19 — HEAT mode of “I FEEL CONTROL” — 1. Indoor fan speed control Difference between room (1) In AUTO the fan speed is as follows. temperature and set temperature during operation. Initial temperature difference Fan speed Set temperature minus room temperature: 2 degrees or more·······························Hi Set temperature minus room temperature: Between 1 and 2 degrees ···················Me 2deg.
- Page 20 3. Defrosting Defrosting of outdoor heat exchanger is controlled by DEICER P.C. board, with detection by the defrost thermistor RT61. (1) Starting conditions of defrost When all conditions of a) ~ c) are satisfied, the defrosting operation starts. a) The compressor cumulative operation time exceeds 40 minutes without the defrosting operation working. b) The defrost thermistor RT61 reads - 3°C or less.
- Page 21 4. Reversing valve control Heating · · · · · ON Cooling · · · · · OFF Dry · · · · · · · · OFF NOTE1 : The reversing valve reverses for 5 seconds right before start-up of the compressor. NOTE2 : Refer to the Service Manual OB227 REVISED EDITION-B when MCFH-13NV- is connected with MXZ-32RV- as multi system units.
- Page 22 9-5. AUTO VANE OPERATION (1) Vane motor drive This model is equipped with a stepping motor for the vane. The rotating direction, speed, and angle of the motor are controlled by pulse signals (approx. 12V) transmitted from indoor microprocessor. (2) Each time the VANE CONTROL button is pressed, angle of horizontal vane is changed in sequence, from 1, 2, 3, 4, 5 to AUTO.
- Page 23 (8) Cold air prevention in HEAT operation. When any of the following conditions occurs in HEAT operation, the angle of horizontal vane automatically changes to Position 1 to prevent cold air blowing on users. 1 Compressor is not operating. 2 Defrosting is performed. 3 Indoor coil thermistor RT12 reads 24: or below.
- Page 24 9-7. EMERGENCY-TEST OPERATION When the remote controller is missing, has failed or the batteries run down, press the EMERGENCY OPERATION switch on the front of the indoor unit. The unit will start and the OPERATION INDICATOR lamp will light. The first 30 minutes of operation is the test run operation. This operation is for servicing. The indoor fan runs at high notch and the system is in continuous operation.
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Page 25: Service Functions
SERVICE FUNCTIONS MCFH-13NV - 10-1. COMPULSORY DEFROSTING MODE FOR SERVICE By short circuit of the connector JP607 and R853 on the outdoor deicer P.C. board, defrosting mode can be accomplished regardless of the defrost interval restriction. See Page 34. Defrost thermistor RT61 must read below -3:. 10-2. -
Page 26: Troubleshooting
TROUBLESHOOTING MCFH-13NV - 11-1. Cautions on troubleshooting 1. Before troubleshooting, check the following: 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for mis-wiring. 2. Take care the following during servicing. 1) Before servicing the air conditioner, be sure to first turn off the remote controller to stop the main unit, and then after confirming the horizontal vane is closed, turn off the breaker. - Page 27 11-2. Instruction of troubleshooting Start Indoor unit Indoor unit OPERATION INDICATOR Indoor unit doesn’t doesn’t receive operates. Outdoor lamp on the indoor unit is receive the signal from the signal from remote controller. unit doesn’t flashing on and off. remote Also, OPERATION controller.
- Page 28 1. troubleshooting check table w Before taking measures, make sure that the symptom reappears, for accurate troubleshooting. Self check table Abnormal Indication Symptom Detect method Check point point 0.5-second ON When serial signal stops for 4 to 5 seconds after 1st on of Mis-wiring Check switch SW2-2.(MU type or MUH 52C relay by POWER turning...
- Page 29 2. Trouble criterion of main parts MCFH-13NV - Part name Check method and criterion Figure Room Measure the resistance with a tester. temperature (Part temperature 10°C ~ 30°C) thermistor Normal Abnormal Indoor coil Opened or short-circuited 8kΩ ~ 20kΩ thermistor Measure the resistance with a tester.
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Page 30: Check Of Indoor Fan Motor
Check of indoor fan motor Turn OFF the power supply. Indoor fan does not operate. Check connector (Fan motor) visually. Are lead wires connected? Is soldered point normal? Reconnect the lead wires. Resolder it. Disconnect lead wires from connector (Fan motor) on indoor electronic control P.C. board. Measure resistance between lead wires No.1 and No.4 and then No.3 and No.4 of the fan motor. -
Page 31: Check Of Indoor Electronic Control P.c. Board
Check of indoor electronic control P.C. board The unit doesn’t operate with the remote controller. Also, the OPERATION INDICATOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch. Replace the fuse. Is fuse(F11)blown? Check both “parts side” and “pattern Replace the indoor electronic Be sure to check both fuse side”... - Page 32 How to check mis-wiring and serial signal error (when outdoor unit does not work) Start 1 Short circuit of JPG and JPS on the 1. Turn OFF the power supply. indoor electronic control P.C. board 2. Turn ON the power supply. enables self-check to be displayed in 3 3.
- Page 33 TEST POINT DIAGRAM AND VOLTAGE MCFH-13NV - Indoor electronic control P.C. board Fan motor power supply 220-240V AC Fuse 250V AC 3.15A Power supply input 220-240V AC 12V DC – 5V DC – JHA(Release of AUTO RESTART FUNCTION. Refer to page 25.) Time short point Indoor coil thermistor (RT12) Indoor coil thermistor (RT12)
- Page 34 MUCFH-13NV - Outdoor deicer P.C. board R601 INPUT 5~10V DC Outdoor fan motor Solenoid coil 220-240V AC 220-240V AC 220-240V AC Defrost thermistor(RT61) Fuse 2A/250V Defrost interval time short pin Test point 5V DC 12V DC Jumper wire for change in defrost setting (JPC, JPE) 12V DC (Refer to page 25.)
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Page 35: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS <"Terminal with lock mechanism" Detaching points> In case of terminal with lock mechanism, detach the terminal as shown below. There are two types ( Refer to (1) and (2)) of the terminal with lock mechanism. The terminal with no lock mechanism can be removed by pulling it out. Check the shape of the terminal and work. - Page 36 OPERATING PROCEDURE PHOTOS 3. Removing the indoor heat exchanger. Photo 5 (1) Remove the grill. (Refer to 1(1) (2)) (2) Remove the screws on both side and in front of the front panel. (Photo 5) (3) Remove the screws of the nozzle assembly. (Photo 6) (4) Remove the electronic box.
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Page 37: Outdoor Unit
12-2. MUCFH-13NV - OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the cabinet Photo 1 Screws of the front panel (1) Remove the screws of the top panel. and motor support (2) Remove the screws of the service panel. (3) Remove the screws of the cabinet. (4) Remove the screws of the front panel and motor support. - Page 38 OPERATING PROCEDURE PHOTOS 3. Removing the propeller fan and the outdoor fan Photo 5 motor Lead clamps Set screws of the (1) Remove the cabinet. (Refer to 1) outdoor fan motor Hook (2) Remove the propeller fan nut. Outdoor (3) Remove the propeller fan. fan motor Propeller fan NOTE : Loose the propeller fan in the rotating direction for...
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Page 39: Parts List
PARTS LIST MCFH-13NV - (WH) 13-2. ACCESSORY PART AND 13-1. INDOOR UNIT REMOTE CONTROLLER STRUCTURAL PARTS 5 14 UNION(LIQUID) UNION(LIQUID) 13-1. INDOOR UNIT STRUCTURAL PARTS Part number that is circled is not shown in the illustration. Q'ty/unit Symbol Part name Remarks in Wiring Part No. -
Page 40: Indoor Unit
13-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS MCFH-13NV - (WH) Part numbers that are circled are not shown in the illustration. Q'ty/unit Symbol in Wiring Part No. Part name Remarks MCFH-13NV- (WH) Diagram E02 228 300 INDOOR FAN MOTOR RB4V25- E02 179 500 SIROCCO FAN... - Page 41 13-4. OUTDOOR UNIT STRUCTURAL PARTS MUCFH-13NV - Part number that is circled is not shown in the illustration. Q'ty/unit Symbol in Wiring Part No. Part name Remarks MUCFH-13NV- Diagram CABINET E02 336 232 E02 336 297 TOP PANEL E02 336 521 GRILLE(OUT) SERVICE PANEL E02 336 245...
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Page 42: Accessory Parts
MUCFH-13NV - 13-6. ACCESSORY PARTS 13-5. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS 13-5. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS Part number that are circled are not shown in the illustration. Q'ty/unit Symbol in Wiring Part No. Part name Remarks MUCFH-13NV- Diagram... -
Page 43: Optional Parts
OPTIONAL PARTS 14-1. REFRIGERANT PIPES The air conditioner has flared connections its indoor and outdoor sides. Please use the optional extension pipe as follows. Additional Pipe size O.D mm (in.) refrigerant Part No. Pipe length Insulation Model... - Page 44 HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYO C C Copyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. New publication, effective Jun. 1999. Issued in Jun. 1999. No.OB240 268 Specifications subject to change without notice. Printed in Japan...