Page 2 - TECHNICAL CHANGES; • Compressor has been changed.(KNB073FBVH
2 1 TECHNICAL CHANGES MUZ-A09YV - ➔ MUZ-GA25VA - MUZ-A09YVH - ➔ MUZ-GA25VAH - E1 E1 E1 E1 MUZ-A12YV - ➔ MUZ-GA35VA - MUZ-A12YVH - ➔ MUZ-GA35VAH - E1 E1 E1 E1 1.Indication of capacity has been changed.(BTU base ➔ kW base) 2.Control method between indoor and outdoor unit has been changed.3.Power suppl...
Page 3 - INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT; Compressor
3 Refrigeration 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 refrigerant Included ...
Page 4 - 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
4 -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 6 - OUTDOOR UNIT; Air inlet; ACCESSORIES; Drain socket; PART NAMES AND FUNCTIONS
6 OUTDOOR UNIT Air inlet Air outlet Drain outlet Piping Drain hose (back and side) ACCESSORIES 1 Drain socket 1 2 Quick clean kit 1 MUZ-GA25VA - E1 MUZ-GA35VA - E1 – 1 MUZ-GA25VAH - E1 MUZ-GA35VAH - E1 MUZ-GA25VA - MUZ-GA35VA - MUZ-GA25VAH - MUZ-GA35VAH - E1 E1 E1 E1 PART NAMES AND FUNCTIONS 2 OB379...
Page 7 - SPECIFICATION
7 Single phase 230V,50Hz 1,890 3.6 0.24 KNB065FDTH 500 V-W 1.88 RA6V21-AB WHT-BLK 347 BLK-RED 281 800 o 550 o 285 31 46 810 1 0.85 320 (NEO22) 32.6 13.4 17 10 Cooling 2.5 (0.9-3.0) 1.4 2.71 3.91 U-V 1.88 Heating 3.2 (0.9-4.5) — 3.11 4.21 U-W 1.88 MUZ-GA25VA - E1 E1 MUZ-GA25VAH - Single phase 230V,50...
Page 8 - Specifications and rating conditions of main electric parts
8 OUTDOOR UNIT Model Item Current transformer Current transformer Smoothing capacitor Diode module Fuse Fuse Defrost heater Intelligent power module Expansion valve coil Reactor Current-detecting resistor Current-detecting resistor Current-limiting resistor Terminal block Relay Relay Relay Relay R.V...
Page 9 - NOISE CRITERIA CURVES
9 NOISE CRITERIA CURVES 4 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 OCT A VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR BAND CENTER FREQUENCIES, Hz Test conditions, Cooling : Dry-bulb temperature 35 : Wet-bulb temperature (24 : ) APPROXI...
Page 10 - OUTLINES AND DIMENSIONS; REQUIRED SPACE
10 5 OUTLINES AND DIMENSIONS 10 69 800 302.5 500 Bolt pitch for installation 150 22.3 Handle 550 280 164.5 99.5 170.5 23 Service panel Service port 285 344.5 44 400 Air in Air out Air in 17.5 Bolt pitch for installation 304~325 40 Liquid refrigerant pipe jointRefrigerant pipe (flared) [ 6.35 Gas ref...
Page 11 - WIRING DIAGRAM; CT; MODEL WIRING DIAGRAM
11 WIRING DIAGRAM 6 OUTDOOR UNIT SYMBOL CT ,CT761,CT781 C63A,C63B,C63C C65 DB61,DB65 DSA61 F61 F71,F801 IC801 IPM SYMBOL L61 L62,L63 MC MF NR63,NR64 R T61 R T62 R T64 R T65 SYMBOL R61,R831 R64A,R64B SR61 TB1,TB2 TR821 T801 X63,X64,X69 21S4 21R1 NAME CURRENT TRANSFORMER SMOOTHING CAP ACIT OR OUTDOOR ...
Page 15 - REFRIGERANT SYSTEM DIAGRAM
15 REFRIGERANT SYSTEM DIAGRAM 7 OUTDOOR UNIT Unit:mm Outdoor heat exchanger Flared connection Defrost thermistor RT61 DischargetemperatuerthermistorRT62 Flared connection Stop valve (with strainar) Stop valve(with service port) Refrigerant flow in cooling Compressor Muffler Muffler 4-way valve Refri...
Page 16 - MAX. HEIGHT DIFFERENCE; MAX. REFRIGERANT PIPING LENGTH
16 ADDITIONAL REFRIGERANT CHARGE (R410A:g) Outdoor unit precharged 850 900 14m 270 270 7m 0 0 6m 0 0 5m 0 0 11m 180 180 Model Refrigerant piping length (one way) Calculation : Xg=30g/m o (Refrigerant piping length(m) - 5) 8m 90 90 9m 120 120 10m 150 150 12m 210 210 13m 240 240 15m 300 300 20m 450 45...
Page 17 - PERFORMANCE CURVES; (1) GUARANTEED VOLTAGE; INDOOR UNIT
17 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 18 - OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
18 <How to operate fixed-frequency operation (Test run operation)> 1. Press EMERGENCY OPERATION switch to COOL or HEAT mode (COOL : Press once, HEAT : Press twice).2. Test run operation starts and continues to operate for 30 minutes.3. Compressor operates at rated frequency in COOL mode or 58H...
Page 19 - Air flow : High speed; Both indoor and outdoor unit are under the; HEAT operation; Condition indoor: Dry bulb temperature 20.0°C
19 2 Air flow : High speed 3 Operational frequency : 65Hz(MUZ-GA25VA, MUZ-GA25VAH) 88Hz(MUZ-GA35VA, MUZ-GA35VAH) (kgf/ F [Gauge]) (MPa [Gauge]) 18 32 15 2050 2560 3070 (%) 35(˚C) 0.2 0.4 0.6 0.8 1.0 1.2 65Hz 2 4 6 8 10 12 14 1.4 Ambient temperature(˚C) Ambient humidity(%) Outdoor low pressure MUZ-GA...
Page 20 - PERFORMANCE DATA COOL operation
20 MSZ-GA25VA - : MUZ-GA25VA - MUZ-GA25VAH - E1 E1 E1 21 18 2.94 1.79 0.61 512 2.81 1.72 0.61 538 2.70 1.65 0.61 563 2.60 1.59 0.61 589 21 20 3.06 1.50 0.49 538 2.94 1.44 0.49 570 2.85 1.40 0.49 582 2.75 1.35 0.49 608 22 18 2.94 1.91 0.65 512 2.81 1.83 0.65 538 2.70 1.76 0.65 563 2.60 1.69 0.65 589 ...
Page 21 - SHF : Sensible heat factor
21 21 18 2.45 1.49 0.61 627 2.25 1.37 0.61 666 2.08 1.27 0.61 691 21 20 2.58 1.26 0.49 653 2.40 1.18 0.49 685 2.23 1.09 0.49 723 22 18 2.45 1.59 0.65 627 2.25 1.46 0.65 666 2.08 1.35 0.65 691 22 20 2.58 1.36 0.53 653 2.40 1.27 0.53 685 2.23 1.18 0.53 723 22 22 2.73 1.12 0.41 678 2.55 1.05 0.41 717 2...
Page 22 - Rated frequency 88Hz
22 21 18 4.11 2.39 0.58 864 3.94 2.28 0.58 907 3.78 2.19 0.58 950 3.64 2.11 0.58 994 21 20 4.29 1.97 0.46 907 4.11 1.89 0.46 961 3.99 1.84 0.46 983 3.85 1.77 0.46 1026 22 18 4.11 2.55 0.62 864 3.94 2.44 0.62 907 3.78 2.34 0.62 950 3.64 2.26 0.62 994 22 20 4.29 2.14 0.50 907 4.11 2.06 0.50 961 3.99 2...
Page 24 - PERFORMANCE DATA HEAT operation
24 PERFORMANCE DATA HEAT operation CAPACITY:3.2(kW) INPUT:760(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 2.02 494 2.43 593 2.85 669 3.26 722 3.68 768 4.06 790 4.48 806 21 1.92 532 2.30 631 2.72 699 3.10 752 3.52 790 3.90 813 4.30 ...
Page 25 - ACTUATOR CONTROL; -3. Relation between main sensor and actuator
25 ACTUATOR CONTROL 9 MUZ-GA25VA - MUZ-GA35VA - MUZ-GA25VAH - MUZ-GA35VAH - E1 E1 E1 E1 Discharge temperature thermistor Indoor coil temperature thermistor Defrost thermistor Fin temperature thermistor Ambient temperature thermistor Purpose Protection Cooling : Coil frost prevention Heating : High p...
Page 26 - SERVICE FUNCTIONS; CHANGE IN DEFROST SETTING; Jumper wire; JS; TROUBLESHOOTING; Troubleshooting procedure; the components for bursting and discoloration.; Take care the following during servicing.; Housing point
26 10 SERVICE FUNCTIONS CHANGE IN DEFROST SETTING <JS> When the JS wire of the outdoor Inverter P.C. board is cut/ soldered, the defrost finish temperature is changed. (Refer to 11-7-1.) Jumper wire Defrost finish temperature JS none (cut) soldered (Initial setting) E1 MUZ-GA35VA - 8 : 5 : MUZ...
Page 29 - Outdoor unit failure mode table
29 3. Outdoor unit failure mode table OFF 2-time flash 2.5 seconds OFF 3-time flash 2.5 seconds OFF 4-time flash 2.5 seconds OFF 5-time flash 2.5 seconds OFF 6-time flash 2.5 seconds OFF 7-time flash 2.5 seconds OFF 8-time flash 2.5 seconds OFF 9-time flash 2.5 seconds OFF 10-time flash 2.5 seconds ...
Page 30 - Start
30 Start Indoor unit operates.Outdoor unit doesn't operate. Indoor unit doesn't receive the signal from remote controller. OPERATION INDICATORlamp on the indoor unit is flashing on and off. Outdoor unit operates in only Test Run operation. w Outdoor unit doesn't operate even in Test Run operation. w...
Page 33 - Check of open phase
33 ● With the connector between the compressor and the intelligent power module disconnected, activate the inverter and check if the inverter is normal by measuring the balance of voltage between the terminals. << Operation method>> Start cooling or heating operation by pressing EMERGENC...
Page 35 - Check of outdoor thermistors; Unit operates COOL mode even if it is set to HEAT mode.
35 Check of outdoor thermistors G When OPERATION INDICATOR lamp flashes 6-time.The thermistors in the outdoor unit are abnormal. Measure the resistance between CN641 1 and 2 . Measure the resistance between CN642 1 and 2 . No Yes Replace the thermistor except RT64.In case of RT64, replace the invert...
Page 36 - Check of outdoor fan motor; Outdoor fan motor does not operate.
36 Check of outdoor fan motor I Outdoor fan motor does not operate. Is there voltage 230V AC between indoor terminal block S1 and S2? Replace the outdoor fan motor. Does the left lamp of OPERATION INDICATOR lamp on the indoor unit light up? Is the resistance of fan motor normal? 3 minutes after, is ...
Page 37 - Check of power supply; Inverter does not operate.
37 Check of power supply J Inverter does not operate. Check of outdoor fan motor I Outdoor fan motor does not operate. Does the voltage betweeneach terminal become 5Vand 0V DC repeatedly? Does the outdoor fanrotate smoothly? Ok No Yes Yes No( Fixed to either 5V or 0V DC) Yes No Rotate the outdoor fa...
Page 38 - Check of current-limiting resistor; Heating/Cooling does not work sufficiently.
38 Outdoor unit does not operate at all, or stops immediately due to overcurrent. Check of LEV (Expansion valve) Check of current-limiting resistor K ● Check other electric parts in the main circuit together in the case of the defective current-limiting resistor. Turn ON the powersupply and pressEME...
Page 39 - Check of defrost heater; Outdoor base gets frozen.
39 Check of defrost heater M Replace the inverter P.C. board. Is there 230V AC between CN722 1 and 3 on the power P.C. board? Refer to 11-7.2. Yes No No problem of the power P.C. board. Is the voltage between CN726 2 (+)- 3 (-) on the power P.C. board 0V DC? Refer to 11-7.2. Yes No Replace the power...
Page 41 - Operation check of the solenoid valve.
41 Operation check of the solenoid valve. P Do you hear the operation sound(click sound) of the solenoid valveevery 5 seconds? Disconnect CN923 and measure the voltagebetween the pins using tester. Trouble of the solenoidvalve coil. Are the cords between CN726, CN727 on theoutdoor power P.C. board a...
Page 42 - Electromagnetic noise enters into TV sets or radios
Electromagnetic noise enters into TV sets or radios 42 Q Replace the antennas.Replace the coaxial cable. No No No Yes Yes No No Yes Yes Yes Is the distance between theantennas and the indoorunit within 3m, or is thedistance between theantennas and the outdoorunit within 3m? Is the distance between t...
Page 43 - GND
43 MUZ-GA25VA - MUZ-GA35VA - MUZ-GA25VAH - MUZ-GA35VAH - E1 E1 E1 E1 Back side of unit -20 -10 0 10 20 30 40 0 10 20 30 40 50 60 70 80 90 100 Temperature( : ) Ambient temperature thermistor(RT65) Defrost thermistor(RT61) Temperature( : ) Discharge temperature thermistor(RT62) 0 10 20 30 40 50 60 70 ...
Page 45 - DISASSEMBLY INSTRUCTIONS; OPERATING PROCEDURE; Photo 1; Photo 2
45 12 DISASSEMBLY INSTRUCTIONS OPERATING PROCEDURE PHOTOS Photo 1 1. Removing the cabinet. (1) Remove the screw fixing the service panel. (See Photo 2.)(2) Pull down the service panel and remove it. (See Photo 2.)(3) Disconnect the power supply and indoor/outdoor connecting wire.(4) Remove the screw...
Page 46 - Photo 3; Heat sink; Removing the discharge temperature thermistor and; Discharge temperature thermistor
3. Removing R.V. coil (1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Disconnect the power supply and indoor/outdoor connecting wire and remove the back panel. (Refer to 1.) (3) Remove the inverter assembly. (Refer to 2.)(4) Remove the R.V. coil. (See Photo 5.) 46 OPERATING PR...
Page 47 - Photo 6
47 OPERATING PROCEDURE PHOTOS Photo 6 Photo 7 Defrostthermistor 5. Removing outdoor fan motor (1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Disconnect the power supply and indoor/outdoor connecting wire and remove the back panel. (Refer to 1.) (3) Disconnect the connectors f...
Page 48 - PARTS LIST; 3-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS
48 13 PARTS LIST 13-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 1 11 12 2 18 20 13 10 9 MUZ-GA25VA - MUZ-GA35VA - MUZ-GA25VAH - MUZ-GA35VAH - E1 E1 E1 E1 3 4 5 6 7 8 19 17 23 21 22 24 15 14 16 OB379 --2qxp 05.1.17 16:38 Page 48
Page 49 - Part numbers that are circled are not shown in the illustration.
49 12 3 4 5 6789 10 11 12 13 14151617 18 19 2021 22 2324 25 262728 KNB065FDTHKNB073FDVH3RUBBERS/SET { 9.52 { 6.35 RA6V21-RC0J50- { 3.0 ✕ { 2.0 ✕ 240 { 3.0 ✕ { 1.4 ✕ 800 { 3.0 ✕ { 1.4 ✕ 500 MCMC LEV MFMF H 26H 21R1 111 1 1 31111 1 11 1 111 11111 111 11 31111 1111 11 111 11 11111 11 11 131111111 11 11...
Page 51 - heat exchanger
51 Outdoor unit { 42 drain hole Soft vinyl chloride hose of25mm inside diameter. MUZ-GA25VA - MUZ-GA35VA - 13-3. DRAIN SOCKET E1 E1 Symbol in Wiring Diagram Q'ty/unit MUZ-GA25VA- Remarks Parts No. Parts Name E1 MUZ-GA35VA- E1 E02 838 704 1 DRAIN SOCKET No. 1 1 1 13-4. QUICK CLEAN KIT ● You can clean...
Page 52 - Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Jan. 2005. No. OB379 6Made in Japan New publication, effective Jan. 2005Specifications subject to change without notice. OB379 --2qxp 05....
