Mitsubishi Electric MXZ-3B30NA - Manuals

Mitsubishi Electric MXZ-3B30NA – Manual in PDF format online.

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Manual

Manual Mitsubishi Electric MXZ-3B30NA

Summary

Page 2 - New model; Air outlet

TECHNICAL CHANGES 2 1 PART NAMES AND FUNCTIONS 2 MXZ-2B20NA Air outlet Drain outlet Air inlet (Back and side) Revision B: • MXZ-3B24NA and MXZ-4B36NA have been added. MXZ-2B20NA New model MXZ-2B20NA MXZ-2B20NA - 1 1. Outdoor fan motor has been changed.2. Outdoor electronic control P.C. board has bee...

Page 3 - SPECIFICATION

3 SPECIFICATION 3 Item Outdoor model Indoor type Non-Duct (09+09) Duct (09+12) Capacity Powerconsumption EERSEERHSPF IV (V)COPExternal finishPower supplyMax. fuse size (time delay)Min. circuit ampacityFan motor Compressor Refrigerant controlSound level Defrost method Dimensions WeightRemote controll...

Page 7 - NOISE CRITERIA CURVES

7 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISE NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 OCT A VE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR BAND CENTER FREQUENCIES, Hz Cooling High FUNCTION FAN SPEED Heating High 49 SPL(dB (A) ) 51...

Page 8 - OUTLINES AND DIMENSIONS

8 OUTLINES AND DIMENSIONS 5 MXZ-2B20NA Unit: inch LIQ 1/4"FLAREGAS 3/8"FLARE Unit B Unit A LIQ GAS GAS LIQ 1-3/16" 1/2" 13" 2-5/8" 7-7/8" 9-7/16" 14-3/16" 11-3/4" 27-15/16" 1-3/16" 33-1/16" (Bolt Pitch) 3- (1-5/16") Drain Hole 4-(13/32"×13/...

Page 11 - WIRING DIAGRAM

Page 13 - REFRIGERANT SYSTEM DIAGRAM

13 Stop valve with service port Stop valve Strainer #100 Power receiver LEV A LEV B Oil separator Compressor Defrost thermistor RT61 Distributor Muffler 4-way valve LEV E Indoor unit B Indoor unit A Indoor unit A Indoor unit B Capillary tube O.D.0.14 x I.D.0.09 x 19.68 Capillary tube O.D.0.10 x I.D....

Page 14 - MAX. REFRIGERANT PIPING LENGTH & PIPE SIZE SELECTION; Operating Range

14 Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the tables below. When the diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe. For further information on Different-di...

Page 19 - DATA

19 DATA 8 Model MXZ-2B20NA Indoor type Non-Duct (09+09) Duct (09+12) Item Unit Cooling Heating Cooling Heating Total Capacity But/h 18,000 22,000 20,000 22,000 SHF – – – – – Input kW 1.44 1.65 2.19 1.78 Electricalcircuit Power supply (V,phase,Hz) 208/230, 1, 60 Input kW 1.396 1.604 2.06 1.69 Comp. c...

Page 27 - -4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT; Data is based on the condition of indoor humidity; Indoor DB tem; Set emergency switch to COOL or HEAT. The switch is located

27 8-4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT 1. 06-class unit in single operation (OUTDOOR UNIT: MXZ-2B20NA) (1) COOL operation Data is based on the condition of indoor humidity 50% Air flow speed: High Inverter output frequency: 40 Hz 65 70 75 80 85 90 95 100 105 110 115 120 130 140 150 16...

Page 29 - Indoor DB temperature (; Indoor DB temperature (

29 3. 12-class unit in single operation (OUTDOOR UNIT: MXZ-2B20NA) (1) COOL operation 65 70 75 80 85 90 95 100 105 110 115 120 140 150 160 170 130 Ambient temperature ( ˚ F) ( ˚ F) 86 80 75 70 86 80 75 70 15 20 25 30 35 40 45 50 55 60 65 70 75 2.0 3.0 4.0 5.0 6.0 7.0 Ambient temperature ( ˚ F) 65 70...

Page 31 - Ambient temperature (

31 5. 06-class unit in single operation (OUTDOOR UNIT : MXZ-3B24NA MXZ-3B30NA MXZ-4B36NA)(1) COOL operation Data is based on the condition of indoor humidity 50% Air flow speed : High Inverter output frequency : 24 Hz (2) HEAT operation <How to work fixed-frequency operation> 1. Set emergency ...

Page 34 - Indoor DB temperature

34 8. 15-class unit in single operation (OUTDOOR UNIT : MXZ-3B24NA MXZ-3B30NA MXZ-4B36NA)(1) COOL operation 65 70 75 80 85 90 95 100 105 110 115 120 130 140 150 160 170 Ambient temperature ( ˚ F) ( ˚ F) 86 80 75 70 86 80 75 70 15 20 25 30 35 40 45 50 55 60 65 70 75 2.0 3.0 4.0 5.0 6.0 7.0 Ambient te...

Page 37 - Relation between main sensor and actuator; Turn ON the power supply for the air conditioner.; NOTE; : Pre-heat control will be turned OFF when the breaker is turned OFF.

37 SERVICE FUNCTIONS 10 ACTUATOR CONTROL 9 Relation between main sensor and actuator MXZ-2B20NA MXZ-3B24NA MXZ-3B30NA MXZ-4B36NA Discharge temperature thermistor Indoor coil thermistor Defrost thermistorFin temperature thermistor Ambient temperature thermistor Outdoor heat exchanger temperature Capa...

Page 39 - Troubleshooting procedure; ponents for bursting and discoloration.; Lead wiring; There are 2 types in failure mode recall function as shown below.; TROUBLESHOOTING

39 11 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) If the electronic control P.C...

Page 40 - Outdoor unit failure mode table

40 The left lamp of OPERATION INDICATOR lamp (Indoor unit) OFF2-time flash 3-time flash 4-time flash 5-time flash 6-time flash 7-time flash 8-time flash Lighting Lighting Lighting Lighting Lighting Once Lighting OnceLighting TwiceLighting 3 timesLighting 4 times Lighting 9 times Once Goes out Lighti...

Page 44 - The other models

44 11-5. TROUBLE CRITERION OF MAIN PARTS MXZ-2B20NA MXZ-3B24NA MXZ-3B30NA MXZ-4B36NA Normal Discharge temperaturethermistor (RT62) Fin temperaturethermistor (RT64) Measure the resistance using a tester. (Part temperature: 14°F ~ 104°F) Part name Check method and criterion 1.2 k Ω ~ 1.56 k Ω Measure ...

Page 45 - Check of power supply; Outdoor unit does not operate.

45 Check of power supply Outdoor unit does not operate. Turn ON the power supply. No Yes Yes No Yes No Yes No Replace the power board. Check the connecting of parts of main power supply circuit. Is there voltage of 208/230 V AC in the power supply terminal block? Is the output voltage from the noise...

Page 46 - How to check mis-wiring and serial signal error

46 Is there rated voltage in the power supply ? Is there any mis-wiring, poor contact, or wire disconnection of the indoor/outdoor connecting wire ? 1 Mis-wiring may damage indoor electronic control P.C. board during the operation. Be sure to confirm the wiring is correct before the operation starts...

Page 48 - Check of LEV; Yes

48 Check of LEV No Yes No Yes Turn ON the power supply to the outdoor unit after checking LEV coil is mounted to the LEV body securely. Is "click - click" sound heard ?Or, do you feel vibration of LEV coil with your hand ? Disconnect the connectors. MXZ-2B CN791: LEV A, CN792: LEV B, CN795: ...

Page 49 - How to check inverter/compressor; minutes after turning ON the power supply, start

49 How to check inverter/compressor • When heating, room does not get warm.• When cooling, room does not get cool. No No Yes Yes Yes No Yes No Disconnect the terminal of the compressor. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION. Is output balanced ? Clarify the causes by...

Page 50 - Check of outdoor thermistors; • When thermistor is abnormal.; Check of outdoor fan motor; Normal

50 Check of outdoor thermistors • When thermistor is abnormal. Thermistor DefrostDischarge temperatureOutdoor heat exchanger temperature Ambient temperatureFin temperature Symbol RT61RT62RT68RT65RT64 Connector, Pin No. Between CN661 pin1 and pin2Between CN661 pin3 and pin4Between CN661 pin7 and pin8...

Page 51 - Infinity

51 The other cases Indoor unit does not operate. (different operating models in multi system) • When you try to run two indoor units simultaneously, one for cooling and the other for heating, the unit which transmits signal to the outdoor units first decides the operation mode. • When the above situ...

Page 55 - Outdoor Power board; Connect to the earth

55 MXZ-2B20NA 3. Outdoor Power board (Red) (White) Connect to the compressorVoltage among phases: 5 V to 180 V Connect to the earth CN5Primary current detection(Connect to the noise filter) CN2Connect to the controller board(+)1-5(–): Signal transmission (To electronic control P.C. board) 5 V DC pul...

Page 57 - DISASSEMBLY INSTRUCTIONS; (1) Slide the sleeve and check if there is a locking lever or not.; OPERATING PROCEDURE; Removing the compressor; Recover gas from the pipes until the pressure gauge; Photo 2; Screws of the cabinet

57 DISASSEMBLY INSTRUCTIONS 12 (1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the locking mechanism. Slide the sleeve. Pull the terminal while pushing the locking lever. Hold the sleeve, and pull out the terminal slowly. The terminal which...

Page 58 - . Removing the fan motor

58 OPERATING PROCEDURE PHOTOS 3 . Removing the fan motor (1) Remove the top panel, the service panel, and the cabinet (Photo 1, 2).(2) Disconnect the connector CN931 and CN932 on the outdoor electronic control P.C. board.(3) Remove the propeller.(4) Remove the fan motor. Photo 4 2. Removing the elec...

Page 59 - Removing the reactor; Removing the expansion valve; way valve; Photo 7; Welded parts

59 OPERATING PROCEDURE PHOTOS 6. Removing the reactor (1) Remove the top panel (Photo 1).(2) Remove the service panel, cabinet, back panel, and the electrical parts (Photo 1, 2, 3, 4).(3) Disconnect the reactor lead wire from the terminal of the reactor.(4) Remove the screws of the reactor, and remo...

Page 60 - Photo 1

60 1. Removing the compressor (1) Remove the screws of the top panel, and remove the top panel. (2) Remove the screws of the service panel, and remove the service panel. (3) Recover gas from the refrigerant circuit. NOTE : Recover gas from the pipes until the pressure gauge shows 0 PSIG. (4) Remove ...

Page 61 - Removing the expansion valve

61 OPERATING PROCEDURE PHOTOS 3. Removing the 4-way valve (1) Remove the top panel (Photo 1, 2).(2) Remove the service panel, rear panel, and pipe cover (Photo 1,2). (3) Recover gas from the refrigerant circuit. NOTE : Recover gas from the pipes until the pressure gauge shows 0 PSIG. (4) Remove the ...

Page 62 - Removing the reactor; Screws of the reactor

62 OPERATING PROCEDURE PHOTOS 5. Removing the reactor (1) Remove the top panel (Photo 1, 2).(2) Disconnect the reactor lead wire.(3) Remove the screws of the reactor, and remove the reactor. Photo 8 Photo : MXZ-3B24NA Screws of the reactor