Mitsubishi MCFZ-A18WV- User Manual

Page 2 - TECHNICAL CHANGES; Refrigerating; INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT; Compressor

2 1 TECHNICAL CHANGES Refrigerating oil Refrigerant New refrigerant R410A HFC-32: HFC-125 (50%:50%) Pseudo-azeotropic refrigerant Not included A1/A1 72.6 -51.4 1.557 64 Non combustible 0 1730 From liquid phase in cylinder Possible Incompatible oil Non Non Previous refrigerant R22 R22 (100%) Single r...

Page 3 - NOTE : The unit of pressure has been changed to MPa on the; Can R22 tools be used?; Tools dedicated for the air conditioner with R410A refrigerant

3 -30 -20 -10 0 10 20 30 40 50 60 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 (MPa [Gauge]) R410A R22 Conversion chart of refrigerant temperature and pressure Saturated liquid pressure ( : ) NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system). The co...

Page 5 - PART NAMES AND FUNCTIONS; OUTDOOR UNIT; ACCESSORIES; SPECIFICATION

5 PART NAMES AND FUNCTIONS 2 OUTDOOR UNIT Air inlet Piping Air outlet (back and side) Drain hose Drain outlet ACCESSORIES 12 Drain socket Drain cap [ 33 1 2 MUZ-A18YV - E1 MUZ-A24YV - E1 MUZ-A26YV - E1 Single phase 230V,50Hz 20 7.38 0.30 SNB130FLDH 850 U-V 0.45 W-U 0.45 V-W 0.45 PM8H60-UB BLK-WHT 15...

Page 7 - Specifications and rating conditions of main electric parts

7 OUTDOOR UNIT Model Item Smoothing capacitor Current transformer Current transformer Fuse Fuse Fet array High pressure switch Power transistor module Reactor Expansion valve Power factor controller Resistor Resistor Resistor Solenoid coil relay Terminal block Terminal block Relay R.V. coil MUZ-A18Y...

Page 8 - NOISE CRITERIA CURVES

8 NOISE CRITERIA CURVES 4 COOLING FUNCTION SPL(dB(A)) LINE High SPEED HEATING 53 55 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 BAND CENTER FREQUENCIES, Hz Test conditions, Cooling : Dry-bulb temperature 35 : Wet-bulb temperature (24 : ) APPROXIM...

Page 9 - OUTLINES AND DIMENSIONS; Service panel; REQUIRED SPACE

9 5 OUTLINES AND DIMENSIONS Unit: mm OUTDOOR UNIT MUZ-A18YV -MUZ-A24YV -MUZ-A26YV - E1 E1 E1 30 - 35 - 155 90 198 40 515 299 66 34 51 330 360 850 430 500 80 121 840 Open as a rule500mm or more ifthe front and bothsides are open 100mm or more 200mm or more if there are obstaclesto both sides Open as ...

Page 10 - WIRING DIAGRAM; RED; MF; MC; MODELS WIRING DIAGRAM

10 WIRING DIAGRAM 6 MUZ-A18YV -MUZ-A24YV - E1 E1 PFC GRN LD9 POWER BOARD RT65 2 1 CN3 RED WHT RS2 RS1 R64 RS3 RS4 F801 CN901 NR63 ELECTRONIC P.C. BOARD CONTROL CB1 CB2 CB3 HC932 IPM NF NOISE FILTER P.C. BOARD BLK BLK BLK BLK WHT RED YLW BLU ORN PNK GRY BLU RED GRN GRN BLU BLU BLK BLK BLK BLK BLK BLK...

Page 11 - MODEL WIRING DIAGRAM

11 MUZ-A26YV - E1 PFC GRN LD9 POWER BOARD RT65 2 1 CN3 RED WHT RS2 RS1 R64 RS3 RS4 F801 CN901 NR63 ELECTRONIC P.C. BOARD CONTROL CB1 CB2 CB3 HC932 IPM NF NOISE FILTER P.C. BOARD BLK BLK BLK BLK WHT RED YLW BLU ORN PNK GRY BLU RED GRN GRN BLU BLU BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK RED BRN BL...

Page 12 - REFRIGERANT SYSTEM DIAGRAM

12 REFRIGERANT SYSTEM DIAGRAM 7 MUZ-A18YV -MUZ-A24YV - E1 E1 OUTDOOR UNIT Unit:mm Outdoor heat exchanger Flared connection Defrost thermistor RT62 Discharge temperature thermistor RT61 Flared connection Stop valve Stop valve(with service port) Capillary tube [ 3.6 ✕ [ 2.4 ✕ 50 Refrigerant flow in co...

Page 13 - MAX. HEIGHT DIFFERENCE; MAX. REFRIGERANT PIPING LENGTH

13 Refrigerant PipingMax. length A w Height difference should be within 15m regardless of which unit, indoor or outdoor position is high. w Max. Height difference 15m Indoorunit Outdoor unit MAX. HEIGHT DIFFERENCE MAX. REFRIGERANT PIPING LENGTH Model Piping size O.D : mm Length of connecting pipe : ...

Page 14 - PERFORMANCE CURVES; (1) GUARANTEED VOLTAGE; INDOOR UNIT

14 PERFORMANCE CURVES 8 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 beenprovided to clarify the ope...

Page 16 - OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT; Air flow : High speed

16 <How to operate fixed-frequency operation (Test run operation)> 1. Press the EMERGENCY OPERATION switch to COOL or HEAT mode (COOL : Press once, HEAT : Press twice).2. Test run operation starts and continue to operate for 30 minutes.3. Compressor starts at fixed-frequency.4. Indoor fan oper...

Page 17 - HEAT operation; Condition indoor: Dry bulb temperature 20.0°C

17 HEAT operation Condition indoor: Dry bulb temperature 20.0°C Wet bulb temperature 14.5°C Condition outdoor: Dry bulb temperature 2,7,15,20.0°C Wet bulb temperature 1,6,12,14.5°C Outdoor unit current (A) Outdoor unit current (A) Ambient temperature(˚C) Ambient temperature(˚C) Outdoor unit current ...

Page 18 - PERFORMANCE DATA COOL operation

18 MSZ-A18YV - : MUZ-A18YV - E1 E1 21 18 5.88 2.76 0.47 1248 5.63 2.64 0.47 1310 5.40 2.54 0.47 1373 5.20 2.44 0.47 1435 21 20 6.13 2.14 0.35 1310 5.88 2.06 0.35 1388 5.70 2.00 0.35 1420 5.50 1.93 0.35 1482 22 18 5.88 3.00 0.51 1248 5.63 2.87 0.51 1310 5.40 2.75 0.51 1373 5.20 2.65 0.51 1435 22 20 6...

Page 22 - Rated frequency 88Hz

22 21 18 7.05 3.24 0.46 1592 6.75 3.11 0.46 1672 6.48 2.98 0.46 1751 6.24 2.87 0.46 1831 21 20 7.35 2.50 0.34 1672 7.05 2.40 0.34 1771 6.84 2.33 0.34 1811 6.60 2.24 0.34 1891 22 18 7.05 3.53 0.50 1592 6.75 3.38 0.50 1672 6.48 3.24 0.50 1751 6.24 3.12 0.50 1831 22 20 7.35 2.79 0.38 1672 7.05 2.68 0.3...

Page 24 - Rated frequency 102Hz

24 21 18 6.46 3.04 0.47 1936 6.19 2.91 0.47 2033 5.94 2.79 0.47 2130 5.72 2.69 0.47 2226 21 20 6.74 2.36 0.35 2033 6.46 2.26 0.35 2154 6.27 2.19 0.35 2202 6.05 2.12 0.35 2299 22 18 6.46 3.30 0.51 1936 6.19 3.16 0.51 2033 5.94 3.03 0.51 2130 5.72 2.92 0.51 2226 22 20 6.74 2.63 0.39 2033 6.46 2.52 0.3...

Page 26 - Rated frequency 63Hz

26 21 18 8.34 3.75 0.45 2000 7.99 3.59 0.45 2100 7.67 3.45 0.45 2200 7.38 3.32 0.45 2300 21 20 8.70 2.87 0.33 2100 8.34 2.75 0.33 2225 8.09 2.67 0.33 2275 7.81 2.58 0.33 2375 22 18 8.34 4.09 0.49 2000 7.99 3.91 0.49 2100 7.67 3.76 0.49 2200 7.38 3.62 0.49 2300 22 20 8.70 3.22 0.37 2100 8.34 3.09 0.3...

Page 28 - PERFORMANCE DATA HEAT operation

28 28 PERFORMANCE DATA HEAT operation CAPACITY:5.9(kW) INPUT:1730(W) OUTDOOR WB( : ) INDOOR -10 -5 0 5 10 15 20 DB( : ) Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 3.72 1125 4.48 1349 5.25 1522 6.02 1644 6.79 1747 7.49 1799 8.26 1834 21 3.54 1211 4.25 1436 5.02 1592 5.72 1713 6.49 179...

Page 29 - ACTUATOR CONTROL; -3. Relation between main sensor and actuator

29 29 ACTUATOR CONTROL 9 MUZ-A18YV -MUZ-A24YV -MUZ-A26YV - E1 E1 E1 Relation between main sensor and actuator. 9-3. Relation between main sensor and actuator 9-2. R.V. coil control Heating . . . . . . . . . . . . . . . . ON Cooling . . . . . . . . . . . . . . . . . OFF Dry . . . . . . . . . . . . . ...

Page 30 - Troubleshooting procedure; the components for bursting and discoloration.; Take care the following during servicing.; Housing point; TROUBLESHOOTING

30 30 10 3. Troubleshooting procedure 1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality. To make sure, check how many times the abnormality indication is flashing on and off before starting service work. 2) Before servicing check tha...

Page 32 - Troubleshooting check table

32 Indication Abnormal point Detecting method Symptom: Outdoor unit does not operate. Check points LED 1 (Red) Lighting Twice Outdoor power system When the compressor operation has been interrupted by over current protection continuously three times within 1 minute after start-up, or when power fact...

Page 34 - Trouble criterion of main parts

34 Part name Check method and criterion Measure the resistance using a tester.(Part temperature : -10°C ~ 40°C) Defrost thermistor/ Outdoor heat exchangertemperature thermistor Normal abnormal 5k Ω ~ 55k Ω Open or short-circuit Normal abnormal 100k Ω ~ 250k Ω Opened or short-circuit Normal abnormal ...

Page 35 - Check of power supply

35 A A Check of power supply Outdoor unit does not operate. (LED display: display OFF) Turn on power supply. No Yes Yes No No Yes No Yes Yes No Replace the power board. Start Check the connecting of parts of main power supply circuit. Is there voltage of 230V AC in the power supply terminal block? I...

Page 40 - Check of HPS; Infinity; • When the operation frequency does not go up from lowest frequency.

40 H H Check of HPS Infinity 0 " Yes No Start 1. Disconnect the connector CN681 in the electronic control P.C. board.2. Check the resistance of HPS after 1 minutes have passed since the outdoor unit power supply was turned off. Check the resistance between each terminal. Reconnect CN681.Turn on ...

Page 43 - V DC pulse wave

43 MUZ-A18YV -MUZ-A24YV -MUZ-A26YV -Power board E1 E1 E1 1 3 325-370V DCOutput (Red) (White) Connect to the compressorVoltage among phases: 5V to 180V Connect tothe earth CN5Primary current detection(Connect to the noise filter) CN2Connect to the controller board(+)1-5(–): Signal transmission (To el...

Page 44 - DISASSEMBLY INSTRUCTIONS; Removing the cabinet

44 11 DISASSEMBLY INSTRUCTIONS (1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector is a terminal with lock mechanism 1 Slide the sleeve. 2 Pull the terminal while pushing the locking lever. 1 Hold the sleeve, and pull out the terminal slowly. In ca...

Page 45 - and power board; thermistor and outdoor heat exchanger; Photo 4; Screws of the relay panel

45 OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board and power board (1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel.(Refer to 1.)(3) Disconnect the following connectors; <Electronic control P.C. board>CN931 and CN932...

Page 46 - Propeller; OPERATING PROCEDURE; (6) Pull out the outdoor heat exchanger temperature thermistor; Photo 5; Discharge temperature thermistor

46 5. Removing outdoor fan motor (1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel. (Refer to 1.)(3) Remove the inverter assembly. (Refer to 2.)(4) Remove the propeller.(5) Remove the screws fixing the fan motor.(6) Remove the fan motor. Photo 7 Propeller S...

Page 47 - Photo 8; Welded parts of 4-way valve; Removing the compressor and 4-way valve; Recover gas from the pipes until the pressure; Removing the reactor; Screws of the reactor; Photo 9

47 OPERATING PROCEDURE PHOTOS Photo 8 Welded parts of 4-way valve 6. Removing the compressor and 4-way valve (1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel. (Refer to 1.)(3) Remove the inverter assembly. (Refer to 2.)(4) Recover gas from the refrigerant ...

Page 48 - PARTS LIST; FUNCTIONAL PARTS

4 19 9 1 13 10 12 2 5 6 7 8 16 14 20 22 23 24 25 28 29 30 3 48 12 PARTS LIST MUZ-A18YV - MUZ-A24YV - MUZ-A26YV - 12-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS E1 E1 E1 11 15 17 18 21 27 26 These figures show about MUZ-A26YV. OB346A --2qxp 04.6.14 1:20 PM Page 48

Page 49 - Part numbers that are circled are not shown in the illustration.

49 MUZ-A18YV - MUZ-A24YV - MUZ-A26YV - 12-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS E1 E1 E1 Symbol in Wiring Diagram Q'ty/unit Remarks Part No. No. Part Name MUZ-A18 YV - E1 MUZ-A24 YV - E1 MUZ-A26 YV - E1 E02 819 297E02 851 630E02 853 630E02 851 301E02 851 501E02 851 ...

HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C C Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Jun. 2004. No. OB346 REVISED EDITION - A 6Distributed in Apr. 2004. No. OB346 6Made in Japan New publication, effective Jun. 2004Specific...

Mitsubishi MCFZ-A18WV- User Manual

Table of Contents:

Summary

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