Table of Contents
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DEHUMIDIFIER
SERVICE MANUAL
Model
CONTENTS
1. PRODUCT SPECIFICATIONS........................................................................................ 2
2. OUTER DIMENSIONS .................................................................................................... 3
3. TIPS ON DEHUMIDIFYING............................................................................................. 3
4. EXTERNAL VIEW, PARTS AND DISPLAY SECTION................................................. 4 ~ 8
5. TECHNICAL POINTS.................................................................................................. 9 ~ 11
6. MAINTENANCE ......................................................................................................... 12 ~ 14
7.1 Wiring Diagram....................................................................................................... 15
7.2 Function List ....................................................................................................... 16 ~ 19
7.3 Timing Charts ..................................................................................................... 20 ~ 23
7.4 General Block Diagram ...................................................................................... 24 ~ 25
8.1 Troubleshooting flowchart ................................................................................. 26 ~ 27
8.2 Key Component Check Procedures ....................................................................... 28
8.3 Error Indications and Corrective Actions ............................................................... 29
8.4 Self-Test program and Execution Procedure .................................................... 29 ~ 30
9. DISASSEMBLY AND REASSEMBLY HINTS .......................................................... 31 ~ 33
10. CONTINUOUS DRAINAGE ........................................................................................... 33
PARTS CATALOG .......................................................................................................... 34 ~ 41
11. TROUBLESHOOTING ............................................................................................... 42 ~ 43
PRECAUTIONS ............................................................................................................... 44 ~ 46
MJ-E26VX-A1
ADVANCED AND EVER ADVANCING
MITSUBISHI ELECTRIC
Sold from 2005
2005
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Table of Contents
Troubleshooting
Related Manuals for Mitsubishi MJ-E26VX-A1
Summary of Contents for Mitsubishi MJ-E26VX-A1
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Page 1: Table Of Contents
ADVANCED AND EVER ADVANCING MITSUBISHI ELECTRIC 2005 DEHUMIDIFIER SERVICE MANUAL MJ-E26VX-A1 Model Sold from 2005 CONTENTS 1. PRODUCT SPECIFICATIONS..................2 2. OUTER DIMENSIONS ....................3 3. TIPS ON DEHUMIDIFYING..................... 3 4. EXTERNAL VIEW, PARTS AND DISPLAY SECTION..........4 ~ 8 5. -
Page 2: Product Specifications
1. Product Specifications MJ-E26VX-A1 Model 50 Hz Item Dehumidifying capacity 26.0 (27°C room temperature,60% relative humidity) (liters/day) Low temp, laundry Auto-dehumidification, low Power supply (phases,V,Hz) Single phase, 230-240V, 50Hz Power consumption (W) Operating current (A) Starting current (A) Color tone White (W) 594 ×... -
Page 3: Outer Dimensions
2. Outer Dimensions 3. Tips on Dehumidifying Drain the water tank before use Installing your dehumidifier Make sure to leave some space around the Refrain from opening unit. doors/windows during operation At least 50 cm At least 2 cm At least Drying laundry indoors 20 cm At least... -
Page 4: External View, Parts And Display Section
4. External View, Parts and Display Section Front Back Louvre Main Air Outlet Handle Washable photocatalytic filter Raise handle to transport Control panel (hereafter: photocatalytic filter) Rear Air Intake Supplied with unit. Set Downward louvre before use. Pre-filter The pre-filter is made from two layers: a blue air filter and a white particle filter. - Page 5 Modes ¡ EASY DEHUMIDIFYING ¡ LAUNDRY The unit operates intermittently controlling the The unit operates for 12 hours and automatically airflow to remove the damp feeling in the air. switches off. (There is no need to set the humidity level) When the room temperature is high, the blower operates to decrease the damp feeling.
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Page 6: Air Purifier
¡ AUTO <To view set humidity level/ To set humidity level> The unit maintains the humidity level by ¡ Pressing the button once displays automatically controlling airflow and operating the set humidify level with the intermittently as necessary. All you have to do is set indicator. -
Page 7: To Dry The Inside
¡ To dry the inside The inside of the unit can be dried to suppress mildew growth on the cooler. On days the dehumidifier is used, internal drying (drying the inside) is recommended. Manual operation Automatic operation To activate internal drying by pressing a To activate internal drying after every use. - Page 8 [ Timer Operation ] OFF timer operation ON timer operation The OFF timer can be set for 1 to 9 hours. The ON timer can be set for 1 to 9 hours. Set the timer when the power is switched on. Set the timer when the power is switched off.
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Page 9: Technical Points
5. Technical points 5.1 The technical points of the new products 1) Internal drying During dehumidification, moisture accumulates on the heat exchanger. If left, this can lead to mildew growth, which is circulated around the room with the air discharge. Internal drying starts automatically after operation, and dries any moisture inside the unit. -
Page 10: How Does The Dehumidifier Work
5.2 Operation and Performance Working temperature Defrosting Dehumidification is possible with a room The unit may display during operation and stop air temperature of 1 – 35°C. If the room temperature flow, followed by a change in the operating noise. The exceeds 35°C, however, the temperature inside the unit has stopped the airflow, and is melting internal frost unit will increase;... -
Page 11: Performance Curve
5.3 Coolant Circuit φ7.00 Compressor Coolant flow Dehumidifying φ5 Defrosting φ5 φ9.52 Tube temperature φ6.35 sensing thermistor Solenoid valve Intake Blow (closed when dehumidifying and open when defrosting) Capillary tube Humidity sensor φ5.0 × φ4.0 Room temperature sensing thermistor φ6.35 φ6.35 Capillary tube φ2.0 ×... -
Page 12: Maintenance
6. Maintenance Maintenance Do not use detergents, cleaning agents for heat exchange equipment, abrasive powders, chemically treated dusters, gasoline, benzene, thinners or other solvents, as they can damage the unit or the water tank, which may result in leakage. Cleaning Once every three months Water tank ·... -
Page 13: Removing Water From The Tank
Removing Water from the Tank The unit automatically shuts down and lights the Tank full lamp when the tank (approximately 5L) is full. Empty the tank. Remove the water tank. Reattach the tank lid and replace the water tank. Grasp handle and slide out. Check the lid and guard are secure. -
Page 14: Replacement Parts
Photocatalytic filter for replacement Empty the water tank and ∞ Type: MJPR-18TXFT wipe away any remaining ∞ Type code: 5C5 816 drops of water. For these items contact your nearest Mitsubishi Electric dealer. Clean the pre-filter. Remove grit with vacuum cleaner Store the unit. -
Page 15: Wiring Diagram And Block Diagram
7. Wiring Diagram and Block Diagram 7.1 Wiring Diagram Control board P200 P201 1 C (defrost)/12 C (end) P100 P101 Thermistor (Tube White temperature sensing) White Sensors Brown (Humidity and room Brown temperature sensing) White Blue White Power supply board Brown Power plug Gray... -
Page 16: Function List
7.2 Function List Operation mode Dehumidifying operation Compressor Blower Solenoid valve Swing louvre Power Lamps Air Purifier Tank full Mildew guard elite Humidity (set/current) Operation mode HIGH Swing area Swing monitor On/off timer Mildew guard Defrost Low temp Child lock Power Selection Mode... - Page 17 <Operation Control> 1 Specifications shared at all operation modes The compressor and blower fan will operate for about 6 minutes after turning on the operation switch or activating the compressor, regardless of humidity or temperature levels. 2 Humidity set operation Compressor and blower fan operation will switch by current humidity and set temperature.
- Page 18 5 Easy Dehumidifier 22°C 29°C 36°C Temperature 20°C 27°C 34°C Current humidity Temperature table – Set humidity Set humidity Dehumidification Dehumidifier mode Dehumidifier mode Circulate Dehumidifier mode Circulate Dehumidifier mode Fan rank Rank 3 Rank 3 Rank 3 Rank 5 Compressor Dehumidifier Dehumidifier...
- Page 19 6 Internal drying 1. Controls (a) Prevents the growth of mildew by drying the moisture accumulated on the heat exchanger when the dehumidifier is OFF. (b) Internal drying operation does not depend on having a full water level. (c) The following operations are performed during internal drying operation. Target part Compressor Airflow fan Solenoid valve...
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Page 24: General Block Diagram
7.4 General Block Diagram... -
Page 26: Troubleshooting Procedure
8. Troubleshooting Procedure 8.1 Troubleshooting flowchart The unit does not operate Start Abnormal Restore AC power supply Check AC power supply Normal Blown Has the fuse blown out? Replace fuse Not blown Is the float switch turned on? Mechanical check •... - Page 27 Step 3 Does the compressor operate? (NO if stalled) Is there an overcurrent? Replace compressor *The compressor does not operate for (Surface is hot) 3 minutes after turning the power ON or OFF. (See page 10) Check connectors Is the compressor relay Check board operating properly? (open/bridge)
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Page 28: Key Component Check Procedures
8.2 Key Component Check Procedures Component name Testing procedure Detach the connector and measure the resistance using a multimeter (component temperature: 10°C to 30°C). Tub temperature sensing thermistor Normal Abnormal Between P11 pins: 8.0kΩ to 20.8kΩ Open or shorted Detach the connector and measure the resistance using a multimeter Room (component temperature: 10°C to 30°C). -
Page 29: Error Indications And Corrective Actions
8.3 Error Indications and Corrective Actions Indication Error (failure) Corrective action (Timer display) P10 connector out of position Room temperature thermistor blowout Check the P10 connection. Check the room temperature and humidity sensor Room temperature thermistor short board. Room temperature and humidity sensor board failure P11 connector out of position Tube temperature thermistor blowout... - Page 30 (2) LED, LCD and fan tests ●Start: Press the MODE and HUMIDITY SELECTION buttons simultameously 4 times when the power is off. Press the POWER button within 2 seconds. ●Mode select: Use the timer switch to change the diagnosis mode (0 - 5). ●Finish: Turn the power OFF.
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Page 31: Disassembly And Reassembly Hints
9. Disassembly and Reassembly Hints 9.1 Disassembly procedure 1. Remove the filter and the water tank Picture 2 (See Pictures 1 and 2.) Filter Picture 1 Front panel setscrews (2 on each side of the front) Water tank Rear panel Rear panel setscrews (3 on each side) 2. - Page 32 <<Demounting the power supply board>> Picture 7 Step 1) Detach the connector cover. 2) Pull out the board connectors. 3) Pull out the board holder assembly setscrews (2) and remove the holder assembly. Setscrew 4) Open the cover by unhooking if from the board holder.
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Page 33: Continuous Drainage
5. Removing the drain pan assembly Step 1) Remove the front pan assembly, rear panel, and blower fan assembly as Picture 14 directed in Procedures 1 to 4. 2) Remove filament tapes from the left and right hooks between the drain pan and Heat base and from the middle (3). -
Page 34: Parts Catalog
Parts Catalog MJ-E26VX-A1 Model Exploded View <Casing and Structure>... - Page 35 Parts Catalog Model MJ-E26VX-A1 Parts List <Casing and Structure> 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. Use specified parts atreplacement.
- Page 36 Parts Catalog MJ-E26VX-A1 Model Exploded View <Casing and Structure> Be careful not to overtighten.
- Page 37 Parts Catalog Model MJ-E26VX-A1 Parts List <Casing and Structure> 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. Use specified parts atreplacement.
- Page 38 Parts Catalog MJ-E26VX-A1 Model Exploded View <Electrical Parts>...
- Page 39 Parts Catalog Model MJ-E26VX-A1 Parts List <Electrical Parts> 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. Use specified parts atreplacement.
- Page 40 Parts Catalog MJ-E26VX-A1 Model Exploded View <Compressor Parts> 12 15...
- Page 41 Parts Catalog Model MJ-E26VX-A1 Parts List <Compressor Parts> 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. Use specified parts atreplacement.
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Page 42: Troubleshooting
11. Troubleshooting Symptom Cause/Remedy ¡ Dehumidified air passes through heating coils causing it to warm The unit blows warm air (this unit is not a cooler). This is not a malfunction. Water does not collect in ¡ Check to see if the temperature/humidity is low. the water tank (minimal Low room temperature/humidity reduces dehumidifying effectiveness. - Page 43 Symptom Cause/Remedy ¡ Check to see if the unit is on a slope or uneven surface. ➝ Move to a sturdy even surface. ¡ Check to see if the pre-filter is clogged. The operating ➝ Clean according to the maintenance procedures noise is ¡...
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Page 44: Precautions
Continuing to operate the unit may result in fire, electric shock, or malfunctions. This may result in fire and/or electric shock. Contact your dealer or Mitsubishi Electric Refer servicing to your dealer or Mitsubishi Service Centre for consultation. Electric Service Centre. - Page 45 CAUTION Do not cover the front or side air Do not use the unit in places intakes or the air outlet that may be subject to oil or with cloth, curtain, etc. flammable gas leakage. This results in poor ventilation and Such a leak around the unit may cause may cause heat generation/fire.
- Page 46 Precautions (cont.) Warning CAUTION ● Keep the unit always in an upright position. Inclining the unit may cause water in the tank to leak into the unit, resulting in malfunction. After emptying the tank, Should you incline the unit accidentally, contact the place of purchase for advice.
- Page 47 Issued in 2005.12 Printed in Japan...