Mitsubishi MSZ-HC35VA- User Manual

Page 3 - TECHNICAL CHANGES

3 MUZ-HA25VA - E1 → MUZ-HC25VA - E1 MUZ-HA35VA - E1 → MUZ-HC35VA - E1 MUZ-HA35VA - E1 → MUZ-HC35VAB - E1 1. Outdoor model has been changed. MUZ-HC35VA - E1 → MUZ-HC35VA - E2 MUZ-HC35VAB - E1 → MUZ-HC35VAB - E2 1. REFRIGERANT SYSTEM has been changed. 1 TECHNICAL CHANGES

Page 4 - ACCESSORIES; PART NAMES AND FUNCTIONS

4 ACCESSORIES Air outlet Drain outlet Piping Drain hose Air inlet MUZ-HC25VA MUZ-HC35VA MUZ-HC35VAB Drain socket 1 2 PART NAMES AND FUNCTIONS

Page 5 - NOTE; SPECIFICATION

5 Outdoor model MUZ-HC25VA MUZ-HC35VA MUZ-HC35VAB Function Cooling Heating Cooling Heating Cooling Heating Power supply Single phase 230 V, 50 Hz Capacity Rated frequency (Min.-Max.) kW 2.5 (0.9-3.0) 3.2 (0.9-4.4) 3.15 (1.0-3.7) 3.6 (0.9-4.8) 3.4 (1.0-3.7) 3.6 (0.9-4.8) Electrical data Breaker capac...

Page 6 - Specifi cations and rating conditions of main electric parts

6 Specifi cations and rating conditions of main electric parts Model Item MUZ-HC25 MUZ-HC35VA- E1 MUZ-HC35VAB- E1 MUZ-HC35VA- E2 MUZ-HC35VAB- E2 Current transformer (CT) 20 A Smoothing capacitor (C61, C62) 500 μ F 420 V Diode module (DB61) 15 A 600 V (DB65) 10 A 600 V Fuse (F61) T20AL250V (F701, F80...

Page 7 - NOISE CRITERIA CURVES

7 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 APPROXIMATETHRESHOLD OF HEARING FORCONTINUOUSNOISE COOLING FUNCTION SPL(dB(A)) LINE HEATING 46 47 MUZ-HC25VA 90 8...

Page 8 - REQUIRED SPACE; OUTLINES AND DIMENSIONS

8 20.8 144.6 89.6 255 145.5 Service panel Service port Air out Liquid refrigerant pipe jointRefrigerant pipe (flared) ø6.35 Gas refrigerant pipe jointRefrigerant pipe (flared) ø9.52 43° 40° REQUIRED SPACE Basically open 100 mm or more without any obstruction in front and on both sides of the unit. 3...

Page 9 - WIRING DIAGRAM

9 MUZ-HC25VA MUZ-HC35VA- E1 MUZ-HC35VAB- E1 6 WIRING DIAGRAM

Page 11 - REFRIGERANT SYSTEM DIAGRAM

11 Unit : mm Outdoor heat exchanger Flared connection Defrost thermistor RT61 DischargetemperaturethermistorRT62 Flared connection Stop valve (with strainer) Stop valve(with service port) Refrigerant flow in cooling Compressor Muffler Muffler 4-way valve Refrigerant flow in heating Refrigerant pipe ...

Page 12 - MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

12 MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE Refrigerant piping: m Piping size O.D: mm Max. Length A Max. Height difference B Gas Liquid MUZ-HC25VAMUZ-HC35VAMUZ-HC35VAB 10 5 9.52 6.35 Max. Length A Max. Height difference B Indoorunit Outdoor unit ADDITIONAL REFRIGERANT CHARGE (R410A ...

Page 13 - PERFORMANCE CURVES

13 The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating condi-tions vary according to the areas where these units are installed, the following information has been provided to clarify the operating characteristics of the air conditio...

Page 16 - COOL operation; -4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT; HEAT operation

16 kgf/cm 2 [Gauge] MPa [Gauge] 18 32 15 2050 2560 3070 (%) 35(°C) 32 3070 (%) 35(°C) 0.2 0.4 0.6 0.8 1.0 1.2 2 4 6 8 10 12 14 1.4 Ambient temperature (°C) Ambient humidity (%) Outdoor low pressure MUZ-HC25VA Ambient temperature (°C) Ambient humidity (%) 15 2050 2560 2 3 4 5 6 18 (A) (A) (A) MUZ-HC3...

Page 17 - PERFORMANCE DATA COOL operation a; t Rated frequency

17 PERFORMANCE DATA COOL operation a t Rated frequency MUZ-HC25VA CAPACITY: 2.5 kW SHF: 0.79 INPUT: 770 W INDOOR DB (°C) INDOOR WB (°C) OUTDOOR DB (°C) 21 25 27 30 Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT 21 18 2.94 1.79 0.61 616 2.81 1.72 0.61 647 2.70 1.65 0.61 678 2.60 1.59...

Page 23 - PERFORMANCE DATA HEAT operation at Rated frequency

23 PERFORMANCE DATA HEAT operation at Rated frequency MUZ-HC25VA CAPACITY: 3.2 kW INPUT: 880 W INDOOR DB (°C) OUTDOOR WB (°C) -10 -5 0 5 10 15 20 Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 2.02 572 2.43 686 2.85 774 3.26 836 3.68 889 4.06 915 4.48 933 21 1.92 616 2.30 730 2.72 810 3....

Page 24 - -3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR; ACTUATOR CONTROL

24 MUZ-HC25VA MUZ-HC35VA MUZ-HC35VAB 9-2. R.V. COIL CONTROL Heating . . . . . . . . . . . . . . . . . ON Cooling . . . . . . . . . . . . . . . . . OFFDry . . . . . . . . . . . . . . . . . . . . OFF NOTE: The 4-way valve reverses for 5 seconds right before start-up of the compressor. ON OFF ON OFF Ou...

Page 25 - Troubleshooting procedure; Take care of the following during servicing; Lead wiring; Jumper wire; SERVICE FUNCTIONS

25 10-1. CHANGE IN DEFROST SETTING <JS> When the JS wire of the inverter P.C. board is cut/ soldered, the defrost finish temperature is changed. (Refer to 11-6-1.) MUZ-HC25VA MUZ-HC35VA MUZ-HC35VAB 3. Troubleshooting procedure 1) First, check if the OPERATION INDICATOR lamp on the indoor unit ...

Page 31 - B Check of open phase

31 11-5. TROUBLESHOOTING FLOW Are the voltages balanced? Disconnect the connector (CN61) between compressor and the intelligent power module (IPM). Replace the inverter P.C. board. Check the voltage between terminals. Check the compressor. See 11-5. “Check of compressor”. No Yes See 11-5. “Check of ...

Page 33 - F Check of compressor start failure; G Check of outdoor thermistors

33 F Check of compressor start failure After the compressor is heated with a drier, does the compressor start? 1 Replace the compressor. Compressor start failure. Activate pre-heat control.(Refer to 10-2. "PRE-HEAT CONTROL SETTING") No Yes Does the compressor run for 10 seconds or more after...

Page 34 - I Check of outdoor fan motor

34 H Check of R.V. coil First of all, measure the resistance of R.V. coil to check if the coil is defective. Refer to 11-4. In case CN721 is not connected or R.V. coil is open, voltage is generated between the terminal pins of the connector although any signal is not being transmitted to R.V. coil. ...

Page 35 - J Check of power supply

35 J Check of power supply Is there voltage 230 VAC between the indoor terminal block S1 and S2? No Yes Replace the indoor electronic control P.C. board. Rectify indoor/outdoor connecting wire. Yes If light up, OK.If fl ash, refer to 11-3. Does the upper lamp of OPERATION INDICATOR lamp on the indoo...

Page 36 - K How to check miswiring and serial signal error

36 Replace the indoor power P.C. board and the indoor terminal P.C. board K How to check miswiring and serial signal error Turn OFF the power supply. Is there rated voltage in the power supply? Yes No Turn ON the power supply. Check the power supply. Is there rated voltage between outdoor terminal b...

Page 38 - M Electromagnetic noise enters into TV sets or radios

38 M Electromagnetic noise enters into TV sets or radios Yes Is the unit earthed? No Earth the unit. Yes Is the distance between the antennas and the indoor unit within 3 m, or is the distance between the antennas and the outdoor unit within 3 m? No Extend the distance between the antennas and the i...

Page 39 - Back side of unit; Front side of unit

39 -20 -10 0 10 20 30 40 0 10 20 30 40 50 60 70 80 90 100 Temperature (°C) Defrost thermistor (RT61) Temperature (°C) Discharge temperature thermistor (RT62) 0 10 20 30 40 50 60 70 80 90 100 110 120 0 100 200 300 400 500 600 700 0 10 20 30 40 50 60 70 80 0 20 40 60 80 100 120 140 160 180 200 Tempera...

Page 40 - OPERATING PROCEDURE; Removing cabinet and panels; DISASSEMBLY INSTRUCTIONS

40 12-1. MUZ-HC25VA MUZ-HC35VA MUZ-HC35VAB NOTE : Turn OFF power supply before disassembling. OPERATING PROCEDURE PHOTOS 1. Removing cabinet and panels (1) Remove the screw fixing the service panel. (Photo 2)(2) Pull down the service panel and remove it. (Photo 2)(3) Disconnect the power supply and ...

Page 41 - board; Removing the discharge temperature thermistor and; Photo 3; Photo 5

41 OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board (1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the earth wires (Photo 3), the lead wire to the reactor and the following connectors; <Inverter P.C. board>CN641 (Defrost thermistor and discharge...

Page 42 - Removing outdoor fan motor

42 OPERATING PROCEDURE PHOTOS 5. Removing outdoor fan motor (1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the connectors for outdoor fan motor.(3) Remove the propeller nut. (Photo 7)(4) Remove the propeller. (Photo 7)(5) Remove the screws fixing the fan motor. (Photo 7)(6) Remove th...

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Copyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Aug. 2008. No. OBH467 REVISED EDITION-B 6Distributed in Mar. 2007. No. OBH467 REVISED EDITION-A 6Distributed in Jan. 2007. No. OBH467 6Made in Japan Ne...

Mitsubishi MSZ-HC35VA- User Manual

Table of Contents:

Summary

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