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FLOOR AND CEILING TYPE AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Model
MCF-13NV-
(When installed on the floor)
(When installed on the ceiling)
·MUCF-13NV-
(WH)
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 ····················15
10. SERVICE FUNCTIONS·····································21
11. TROUBLESHOOTING ······································22
12. DISASSEMBLY INSTRUCTIONS·····················28
13. PARTS LIST······················································32
14. OPTIONAL PARTS···········································35
MCF-13NV -
E3
No. OB239
E3
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Related Manuals for Mitsubishi Electric MCF-13NV-E3
Summary of Contents for Mitsubishi Electric MCF-13NV-E3
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Page 1: Table Of Contents
FLOOR AND CEILING TYPE AIR CONDITIONERS No. OB239 SERVICE MANUAL Wireless type Model MCF-13NV- ·MUCF-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 MCF-13NV - MCF-13NV - 1. Indoor unit model name has changed. MUCF-13NV - MUCF-13NV - 1. Outdoor unit model has changed. PART NAMES AND FUNCTIONS MCF-13NV - INDOOR UNIT (When installed on the floor) Vertical vanes Horizontal vane Operation indicator lamp Receiving section Front panel... - Page 3 MUCF-13NV - OUTDOOR UNIT Air inlet (back and side) Piping Drain hose Air outlet Drain outlet MCF-13NV - REMOTE CONTROLLER CLOCK CLOCK RESET RESET...
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Page 4: Specification
SPECIFICATION Model MCF-13NV- Function Cooling Power supply Single phase, 220-240V, 50Hz Capacity Capacity Dehumidification Air flow Power outlet Running current 6.3-6.3 Power input 1,310-1,380 Auxiliary heater Electrical — A(kW) Power factor data 95-91 Starting current 35-38 Compressor motor current 5.74-5.72 Fan motor current 0.56-0.58 Coefficient of performance(C.O.P) -
Page 5: Noise Criteria Curves
NOISE CRITERIA CURVES MCF-13NV - MUCF-13NV - SPL(dB LINE NOTCH NOTCH SPL(dB LINE 43-44 (220-240V) Test conditions, Test conditions, Cooling : DB 27: WB 19: Cooling : DB 35: WB 24: NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE... -
Page 6: Outlines And Dimensions
OUTLINES AND DIMENSIONS MCF-13NV - Unit: mm INDOOR UNIT 80.8 112.8 (When installed on the floor) 50cm or more 50cm or more (When installed on the ceiling) 50cm or more 1100 Gas line 17.5 12.7 Liquid line 6.35 MUCF-13NV - REQUIRED SPACE OUTDOOR UNIT Outdoor... -
Page 7: Wiring Diagram
WIRING DIAGRAM MCF-13NV - MODEL WIRING DIAGRAM INDOOR UNIT CIRCUIT BREAKER GRN/YLW RT12 HIC1 W BRN LDCOM LDC11 POWER SUPPLY LDC12 ~/N 220-240V 50Hz CN201 TRANS LDFH SR144 LDFL SR142 LDFM GRN/YLW SR143 W BLU ELECTRONIC CONTROL P.C BOARD GRN/YLW TO OUTDOOR UNIT W WHT... -
Page 8: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM Unit:mm MCF-13NV - MUCF-13NV - INDOOR UNIT OUTDOOR UNIT Refrigerant pipe [12.7 (option) (With heat insulation) Indoor Stop valve heat (with service port) exchanger Outdoor heat exchanger Flared Indoor coil Distributor Compressor connection thermistor RT12 Room temperature Stop valve Strainer Capillary tube... -
Page 9: Performance Curves
PERFORMANCE CURVES MCF-13NV - The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions, 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. The unit of pressure has been changed to MPa on the international system of units(SI unit system). The conversion factor is : 1(MPa •...
- Page 11 PERFORMANCE DATA COOL operation(220V) MCF-13NV - : MUCF-13NV - CAPACITY : 3.7 kW INPUT : 1310 W SHF : 0.70 OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.35 2.26 0.52 1048 4.16 2.16 0.52 1100...
- Page 12 PERFORMANCE DATA COOL operation(220V) MCF-13NV - : MUCF-13NV - CAPACITY : 3.7 kW INPUT : 1310 W SHF : 0.70 OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.63 1.89 0.52 1284 3.33 1.73 0.52 1362 3.20 1.66 0.52 1389...
- Page 13 PERFORMANCE DATA COOL operation(240V) MCF-13NV - : MUCF-13NV - CAPACITY : 3.7 kW INPUT : 1380 W SHF : 0.70 OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.35 2.26 0.52 1104 4.16 2.16 0.52 1159...
- Page 14 PERFORMANCE DATA COOL operation(240V) MCF-13NV - : MUCF-13NV - CAPACITY : 3.7 kW INPUT : 1380 W SHF : 0.70 OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.63 1.89 0.52 1352 3.33 1.73 0.52 1435 3.20 1.66 0.52 1463...
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Page 15: Microprocessor Control
MICROPROCESSOR CONTROL MCF-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-minutes time delay will operate to protect system from overload and compressor will not restart for 3 minutes. - Page 16 (4) The initial set temperature is decided by the initial room temperature. Mode Initial room temperature Initial set temperature 26: or more COOL mode of "I FEEL CONTROL" Initial room temperature 25: to 26: minus 2: DRY mode of Initial room temperature more than 13:, less than 25: "I FEEL CONTROL"...
- Page 17 —DRY mode of “I FEEL CONTROL”— The system for dry operation uses the same refrigerant circuit as the cooling circuit. The compressor and the indoor fan are controlled by the temperature. By such controls, indoor air flow amounts will be reduced in order to lower humidity without much room temperature decrease.
- Page 18 9-4. FAN ( ) OPERATION (1) Press OPERATE/STOP (ON/OFF) button. (2) Select FAN mode with the OPERATION SELECT button. (3) Select the desired fan speed. When AUTO, it becomes Lo. Only indoor fan operates. Outdoor unit does not operate. 9-5. AUTO VANE OPERATION (1) Vane motor drive This model is equipped with a stepping motor for the vane.
- Page 19 9-6. TIMER OPERATION 1. How to set the timer (1) Press OPERATE/STOP(ON/OFF) button to start the air conditioner. (2) Check that the current time is set correctly. NOTE : Timer operation will not work without setting the current time. Initially “AM0:00” blinks at the current time display of TIME MONITOR, so set the current time correctly with CLOCK SET button.
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Page 20: Continuous
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 speed runs at high notch and the system is in continuous operation. -
Page 21: Service Functions
SERVICE FUNCTIONS MCF-13NV - 10-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board. The time will be shortened as follows. 3-minutes time delay : 3-minutes 3-seconds. -
Page 22: Troubleshooting
TROUBLESHOOTING MCF-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 23 11-2. Instruction of troubleshooting Start Indoor unit doesn’t When the remote OPERATION Indoor unit Indoor unit operates. receive the signal from doesn’t receive controller is pressed INDICATOR lamp on Outdoor unit doesn’t remote controller. the signal from or when the the indoor unit is operate.
- Page 24 MCF-13NV - 2. Trouble criterion of main parts 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 8kΩ ~ 20kΩ Opened or short-circuited thermistor Measure the resistance between the terminals with a tester.
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Page 25: Noise
Check of indoor fan motor Indoor fan does not operate. Turn OFF the power supply. 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 26: 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 27 TEST POINT DIAGRAM AND VOLTAGE MCF-13NV - Indoor electronic control P.C. board Fan motor power supply Fan motor voltage 220-240V AC Fuse 250V AC 3.15A Power supply input 220-240V AC 12V DC – 5V DC – CN104 JHA(Release of AUTO RESTART FUNCTION.Refer to page 21.) Time short point Indoor coil thermistor (RT12)
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Page 28: 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 29 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 30: Outdoor Unit
12-2. MUCF-13NV- OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the cabinet Screws of the front panel Photo 1 (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 31 OPERATING PROCEDURE PHOTOS Photo 5 3. Removing the propeller fan and the outdoor fan motor (1) Remove the cabinet. (Refer to 1.) Set screws of (2) Remove the propeller fan nut. outdoor fan motor (3) Remove the propeller fan. Hook Lead clamps NOTE : Loose the propeller fan in the rotating direction for Propeller fan...
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Page 32: Parts List
PARTS LIST MCF-13NV - (WH) 13-2. ACCESSORY PART AND 13-1. INDOOR UNIT REMOTE CONTROLLER STRUCTURAL PARTS 5 14 UNION(LIQUID) UNION(GAS) 13-1. INDOOR UNIT STRUCTURAL PARTS Part number that is circled is not shown in the illustration. Q'ty/unit Symbol Part No. Part name in Wiring Remark... -
Page 33: Indoor Unit
13-3. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS MCF-13NV - (WH) Part number that are circled are not shown in the illustration. Q'ty/unit Symbol in Wiring Part No. Part name Remark MCF-13NV- (WH) Diagram E02 227 300 INDOOR FAN MOTOR RA4V19- E02 179 500 SIROCCO FAN... - Page 34 13-4. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS MUCF-13NV- Part number that are circled are not shown in the illustration. Q'ty/unit Symbol in Wiring Remark Part No. Part name MUCF-13NV- Diagram E02 336 232 CABINET E02 336 521 GRILLE(OUT) E02 336 245 SERVICE PANEL...
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Page 35: Optional Parts
OPTIONAL PARTS 14-1. AIR CLEANING FILTER If the air cleaning filter is clogged, it may reduce the air conditioner capacity or cause condensation at the air outlet. The air cleaning filter is disposable. The standard usable term is about 4 months. However, if the color of the filter turns to dark brown, replace soon. - Page 36 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.OB239 268 Specifications subject to change without notice. Printed in Japan...