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Mitsubishi MJ-EZ6CX-S1-IT Service Manual
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Mitsubishi MJ-EZ6CX-S1-IT Service Manual

Mitsubishi MJ-EZ6CX-S1-IT Service Manual

2010
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DEHUMIDIFIER
SERVICE MANUAL
Model
CONTENTS
1.
Precautions ...............................................................................................................2
2.
3.
Specifications ...........................................................................................................6
4.
Outer Dimensions ....................................................................................................6
5. Wiring Diagram .........................................................................................................7
6.
Function ....................................................................................................................8
7. Technical Points ......................................................................................................11
8. Time Charts .............................................................................................................12
9.
Circuit Diagram .......................................................................................................14
10. Precautions for failure diagnosis ..........................................................................16
11. Troubleshooting Procedure ...................................................................................17
12. Troubleshooting ......................................................................................................28
13. Maintenance ............................................................................................................30
14. Service Checklist ....................................................................................................32
15. Precautions for Disassembly and Reassembly ...................................................33
16. Disassembly and Reassembly Hints .....................................................................35
17. Parts Catalog ...........................................................................................................44
MJ-EZ6CX-S1-IT
ADVANCED AND EVER ADVANCING
MITSUBISHI ELECTRIC
Sold from 2010
2010
No.MJW-10020

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Summary of Contents for Mitsubishi MJ-EZ6CX-S1-IT

  • Page 1: Table Of Contents

    ADVANCED AND EVER ADVANCING MITSUBISHI ELECTRIC 2010 DEHUMIDIFIER No.MJW-10020 SERVICE MANUAL MJ-EZ6CX-S1-IT Model Sold from 2010 CONTENTS Precautions .......................2 Names and Functions of Parts (Front, Back, Control panel, Accessories) ..4 Specifications ......................6 Outer Dimensions ....................6 5. Wiring Diagram ......................7 Function ........................8 7.

  • Page 2: Precautions

    Do not place under objects or use with the end This may result in fire and/or electric shock. close to the plug bent. Refer servicing to your dealer or Mitsubishi (Keep pets from biting the cord.) Electric Service Centre.
  • Page 3 Note) This page is extracted from the instruction manual. CAUTION Do not cover an air outlet or Do not point airflow from the unit directly at air intake with laundry, cloth, the body for a prolonged period of time. curtain, etc. Be especially careful when using the unit where there is This results in poor ventilation and...

  • Page 4: Names And Functions Of Parts (Front, Back, Control Panel, Accessories)

    2. Names and Functions of Parts CAUTION Names and Functi Unplug the unit from the power Front source when not using the unit for an extended period of time. Control panel Otherwise it may cause fire and/or electric shock caused by an electric Louvre (air outlet) leak.

  • Page 5: Control Panel

    ons of Parts Note) This page is extracted from the instruction manual. Control panel CLEAN FILTER lamp Flashes or lights to notify you that it FULL lamp is time to clean the filter. RESET switch Lights when the tank is full. Cancels the flashing or lit state of Lights when the tank is not the CLEAN FILTER lamp.

  • Page 6: Specifications

    3. Specifications Note) This page is extracted from the instruction manual. -S1-IT 590W Power consumption 305W Operating sound Water tank capacity stops automatically at approx. 2.4L Dimensions (H × W × D) 485mm × 190mm × 324mm The dehumidifying capacity is a value obtained when the dehumidifier is continuously run at a room temperature of 30°C and relative humidity of 80%.

  • Page 7: Wiring Diagram

    5. Wiring Diagram Float Frame Heater 1 ) Wiring Diagram thermistor switch thermistor Frame Room temperature Power plug thermal fuse Operation control board Heater humidity sensor Rotor motor Power control board Blower Dryer Photo motor motor Heater thermal Interrupter Stepping fuse motor 2 ) Board Diagram...

  • Page 8: Function

    6. Function Function List Lamp indications Switch Operation Off ○ ○ ○ ○ − − − ○ ○ ○ ○ ○ ○ ○ High ○ ○ − − − ○ ○ ○ ○ ○ ○ ○ Hi/Lo Hi/Lo Auto ○ ○...
  • Page 9 2 Auto When humidity exceeds 60%, Humidity Set humidity 60% lower it by less than 50% ① Control Summary ％ ( a ) The operation is shifted among 60% ↓ Set humidity 50% setting,50% setting,and circulating ％ operation, depending on the room temperature.
  • Page 10 Bathroom Mildew Guard ■ Control Summary ① ( a ) Preventing the growth of mildew by lowering the humidity in the bathroom. ( b ) The dehumidifying time changes depending on temperature and humidity, and it stops automatically (Minimum 4 hours, Maximum 12 hours). ( c ) The direction of louvre automatically changes depending on the humidity, temperature and time.

  • Page 11: Technical Points

    7. Technical Points Note) This page is extracted from the instruction manual. Features of this dehumidifier Room temperature may rise 3-6°C during operation. The dehumidifier does not have a cooler function. Due to heat produced during operation, the room temperature may rise 3-6°C.

  • Page 12: Time Charts

    Switching the operation mode Tank full Intelligent laundry Operation OFF State / Operation Operation Dehumidifying Mode Mode Float Float Intelligent laundry Operation Bathroom mildew g uard Continuous hi g h Hi g h Bathroom mildew g uard Intelligent laundry Continuous low Deo-dry Mode Intelligent laundry...
  • Page 13 Clean filter OFF timer operation State / Operation OFF timer Total operating hour Operation Operation Total operating hour Operation Operation Filter Operation OFF timer OFF timer of blower fan 150 Hr elapsed of blower fan 300 Hr elapsed reset 4 Hr elapsed 2Hr elapsed 2Hr elapsed Mode...

  • Page 14: Circuit Diagram

    9. Circuit Diagram VH-2(3) (BRW) (BLU) 4.7k AC250V 6.3A TEMP FUSE 1/2W 220k 1/2W 220k T6.3AH250V 2SC5395 (HEATER) VH-2(4) 172℃ 172℃ (BLU) 4.7B (RED) TEMP FUSE (FLAME) VH-2(4) 121℃ 121℃ (GRN) (RED) 16V 47u ZNR1 Z10D471 1A600V 2k2% 50V 10u 13k2% 250V224 +12V...
  • Page 15 DTR1 RN2206 Vref AVdd VAss Vss PH-10 PH-10 INT2 DTR2 RN2206 5.1k DTR3 TEST RN2206 +12V 1SS133 DTR4 RN2206 L78LR05C RESET UPWARD WIDE AUTO LED1 LED2 LED3 LED4 （G） （G） （G） （G） 16V47u BATHROOM MILDEWGUARD CLEAN FILT DEO-DRY FULL LED6 LED7 LED5 LED8...

  • Page 16: Precautions For Failure Diagnosis

    10. Precautions for failure diagnosis The following precautions should be observed in order to perform troubleshooting safely and correctly. The following diagrams indicate circumstances where danger can result from mishandling the unit. WARNING Mishandling may result in fatal or serious injury, or fire. CAUTION Mishandling may result in injuries or damage to your home or property ,etc.

  • Page 17: Troubleshooting Procedure

    11. Troubleshooting procedure 1 ) Failure diagnosis flowchart Are error codes flashing? Refer to “Error Indications and Corrective “E2” “E3” “E4” “E5” “E6” “E7” Actions,” and follow the procedures. “A1” “A2” “A3” “A6” “A9” “F1” “F2” “F5” “F7” Does the power lamp light Replace the power cord.
  • Page 18 Replace the float sensor. Check the float switch. Check if there is no disconnection or ● contact failure of the connector ( P12 ) and connector pins of operation control board. Replace the operation control board. Check the continuity between connecter ( P12 ) ●...
  • Page 19 Does the rotor Check the photo interrupter. Replace the photo interrupter. motor stop in the Follow “8) Rotor Motor Rotation middle of operation? Monitor Display” to check if each lamp lights up. Replace the power control board. Does the dryer fan rotate smoothly? When the dryer fan touches Does the dryer fan motor rotate? ( When rotate it with your hand,...
  • Page 20 Check if there is no disconnection Insert the connector and connector pin securely. or contact failure of the connector ( P3 ) and connector pins of the power control board. Check the resistance of the frame fuse. Replace the frame fuse. Replace the power control board.
  • Page 21 Check the resistance of the room Replace the room temperature/humiditysensor. Replace the power control board. temperature / humidity sensor. Between pin3 and pin4 Replace the operation Normal : 47-51k Ω control board. Abnormal : Open or short The unit is normal. Dehumidifying cannot be performed The unit stops working in Is Auto operation is selected ?
  • Page 22 An odor may be emitted from the parts inside the dehumidifier at first. An odor comes from the ① Shortly after the purchase ? air outlet during operation. odors unique to zeolite ( sour smell, burning smell, etc. ) may be ②...
  • Page 23 2 ) Simple Check Table for Main Parts Component name Testing Procedure Detach the connectors ( P11,P13 ) , and measure the resistance using a multimeter. (Component temperature : 10 ℃ t o 30℃ ) Frame heater thermistor Normal Abnormal P11, P13 Between pins 180k-500k Open or short...
  • Page 24 Display Error code Failure of photo Short circuit Disconnection Short circuit Disconnection Frequency Frequency Disconnection interrupter Watch dog Content RAM error of room temp. of heater of heater of frame determination error determination error of room temp. for dryer fan error ( When it is reset.
  • Page 25 Display Error code Heat exchanger Short circuit of Disconnection Heater temperature Heater thermistor HEX thermistor Content Rotor lock temperature EEPROM error frame thermistor of dryer fan anomaly anomaly anomaly anomaly ( 1 ) Contact failure of Does the rotor rotate? If YES, ( 1 )Disconnection Dryer fan does not rotate.
  • Page 26 4 ) Self Diagnostic Test Program ● Start …Press the mode switch and dehumidifying switch when power is off. Turn on the power with those switches pressed. ● Operational content ① Dehumidifying operation ( High ) ② Heater turns on immediately. ③...
  • Page 27 7 ) Monitor Display mode indication Start… Press the mode switch and the dehumidifying ● switch 5 times together when power is off. Turn on the power within 2 seconds. Mode selection…Change to the diagnosis mode with the mode switch. ●...

  • Page 28: Troubleshooting

    12. Troubleshooting Troubleshooting For the symptoms listed below, refer to the remedies listed right. Symptom Cause / Remedy The dehumidifier does not have a cooler function. Due to heat produced The room temperature rises during operation, the room temperature may rise 3-6°C. during operation (If operation is performed with the unit set to Dehumidifying “LOW”...
  • Page 29 → Clean according to the maintenance procedures. inside of the water tank and lid. The power plug and socket are Stop using the unit, and contact the place of purchase or Mitsubishi Electric unusually hot. Service Centre. Check to see if the unit is on a slope or uneven surface.

  • Page 30: Maintenance

    13. Maintenance Maintenance Once every two weeks or when the CLEAN FILTER Do not use detergents, cleaning agents for heat lamp flashes or lights exchange equipment, abrasive powders, chemically treated dusters, gasoline, benzene, thinners or other Silver Ion Filter, Air Intake, and Sensor solvents, as they can damage the unit or the water tank, which may result in leakage.

  • Page 31: Replacement Parts

    Soak the silver ion filter Type : MJPR-7AXFT ● in water. Please contact your nearest Mitsubishi Electric dealer for purchase. Soak in cool to lukewarm water for about 30 minutes. Do not use detergent or hot water. Also, do not use a brush or the like to scrub the filter or rub...

  • Page 32: Service Checklist

    14. Service Checklist ( 1 ) Points to be checked after completing repairing After completing repairing, check the all items below to prevent re-repair. Check items Check Was the proper tool used? Are the parts on the parts catalog used? Verify that there is no problem in the lead wire (layout and connection) and/or clamp.

  • Page 33: Precautions For Disassembly And Reassembly

    15. Precautions for Disassembly and Reassembly The following precautions should be observed in order to perform disassembly and reassembly safely and correctly. The following diagrams indicate circumstances where danger can result from mishandling the unit. WARNING Mishandling may result in fatal or serious injury, or fire. CAUTION Mishandling may result in injuries or damage to your home or property etc.
  • Page 34 CAUTION Wear protective gloves. Keep children away. Wear gloves Keep away Failure to do so may result in injuries Failure to do so may result in by the edge of metal, electric shock, electric shock and/or injuries when moving and/or burns caused by contact with hot section. the unit or using a measuring device.

  • Page 35: Disassembly And Reassembly Hints

    16. Disassembly and Reassembly Hints 【Precautions for disassembly】 Connection should be performed without fail, especially when screws are used for it. ● Tighten the screws securely in that case. When the cable tie fixing the lead wire is cut, be sure to replace it with a new one. ●...
  • Page 36 ( 4 ) Removing and replacing the operation control board ① Pull out the water tank. → ( Reference : Removing the water tank ) ③ ② Remove the left case. → ( Reference : Removing the left case ) ③...
  • Page 37 ( 5 ) Removing and replacing the power control board Power control board holder setscrew ① Pull out the water tank. ④ → ( Reference : Removing the water tank ) ② Remove the left case. → ( Reference : Removing the left case ) ③...
  • Page 38 ( 7 ) Removing and replacing the sensor control board / rotor thermistor / rotor fuse ① Remove the heat exchanger. ③ → ( Reference : Removing the heat exchanger ) ② Remove the power control board. → ( Reference : Removing and replacing the power control board ) ③...
  • Page 39 ( 9 ) Removing and replacing the blower fan / blower fan motor Note: The following procedure can be performed without removing the blower fan holder. Blower fan setnut ② ① Remove the right case. ③ → ( Reference : Removing the right case ) Blower fan holder...
  • Page 40 ( 12 ) Removing and replacing the float switch ① Remove the right case. ② → ( Reference : Removing the right case ) ② Remove the drain pan setscrews ( 2 ) to remove the drain pan. Drain pan ③...
  • Page 41 ( 14 ) Removing and replacing the heater thermistor / heater fuse ① Remove the blower fan holder. → ( Reference : Removing and replacing the blower fan / blower motor ) Heater fuse ② Remove the drain pan. setscrews →...
  • Page 42 ( 16 ) Remove and replace the frame S ① Remove the zeolite / heater assembly. ② → ( Reference : Removing and replacing the Frame zeolite / heater assembly ) ② Remove the frame S setscrews ( 2 ) . ③...
  • Page 43 ( 17 ) Removing and replacing the photo interrupter ① Remove the frame S. Photo interrupter plug → ( Reference : Removing and replacing the frame S ) ② Detach the catches ( 4 ) which fix the photo interrupter from the frame to remove the photo interrupter.

  • Page 44: Parts Catalog

    17. Parts Catalog MJ-EZ6CX-S1-IT Model Structural Disassembly Diagram [ Case and tank structural relationship ]...
  • Page 45 Model MJ-EZ6CX-S1-IT Parts List [Case and tank structural relationship] Notes: 1. Circled reference numbers indicate performance parts. 2. New parts and the parts that are used only with these models lack compatibility. 3. Those parts that are marked by are of critical importance for sustaining safety and performance.
  • Page 46 MJ-EZ6CX-S1-IT Model Structural Disassembly Diagram [Zeolite and warm air heater structural relationship]...
  • Page 47 Model MJ-EZ6CX-S1-IT Parts List [Zeolite and warm air heater structural relationship] Notes: 1. Circled reference numbers indicate performance parts. 2. New parts and the parts that are used only with these models lack compatibility. 3. Those parts that are marked by are of critical importance for sustaining safety and performance.
  • Page 48 MJ-EZ6CX-S1-IT Model Structural Disassembly Diagram [Fan and control panel structural relationship] (310) (311) Caution : Do not cover the hole of drainpan for overflow. This may cause water leakage.
  • Page 49 Model MJ-EZ6CX-S1-IT Parts List [Fan and control board structural relationship] Notes: 1. Circled reference numbers indicate performance parts. 2. New parts and the parts that are used only with these models lack compatibility. 3. Those parts that are marked by are of critical importance for sustaining safety and performance.
  • Page 50 Issued in 2010.7...

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