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ADVANCED AND EVER ADVANCING

MITSUBISHI ELECTRIC

DEHUMIDIFIER

2005

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. TECHNICAL POINTS.................................................................................................. 9 ~ 11
6. MAINTENANCE ......................................................................................................... 12 ~ 14
7. WIRING DIAGRAM AND BLOCK DIAGRAM

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. TROUBLESHOOTING PROCEDURE

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

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Содержание MJ-E26VX-A1

Страница 1: ...NCE 12 14 7 WIRING DIAGRAM AND BLOCK DIAGRAM 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 TROUBLESHOOTING PROCEDURE 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 CONTINU...

Страница 2: ...arting current A Color tone Dimensions H W D mm Weight kg Coolant quantity g Evaporator Condenser Model 27 C room temperature 60 relative humidity liters day Low temp laundry Auto dehumidification low Performance Product performance Compressor Blower Electrical characteristics Operating noise levels dB Compressor protection Model Output W Winding resistance Ω Blower protection Type Output W Flow r...

Страница 3: ...me space around the unit Operating noise Place the unit on top of a mat This reduces vibration and noise It also prevents leaving depressions on carpets At least 50 cm At least 2 cm At least 20 cm At least 20 cm At least 20 cm Thoroughly spin dry the laundry and hang so there are no wrinkles Direct the louvres at the laundry Space laundry to improve airflow Drying times will vary depending on the ...

Страница 4: ...r ON OFF Sets timer Power lamp Lights when unit is ON Power button Use this to switch the unit ON and OFF Tank full light This lights up to warn that the water tank is full Mildew guard elite lamp Flashes during internal drying operation Mildew guard elite button Activate deactivates internal drying Air purifier lamp Lights during air purifier only operation Air purifier button Switches to air pur...

Страница 5: ...ldew is unable to produce new spores similar to plant seeds if dried as mycelia The Mildew Guard feature applies this principle However the growth suppressed spores themselves are resilient to dry conditions Identification of Aspergillus and Penicillium Research paper by Dr K Abe of the Environmental Biology Research Center Repeat EASY DEHUMIDIFYING The unit operates intermittently controlling the...

Страница 6: ...ess Starts swing operation The swing monitor is displayed This indicates the range of louvre swing The louvre and monitor do not move in synchronization The level of noise emitted from the unit varies according to the angle of the air flow The louvre may stop up to a maximum of 8 seconds to correct its position after which it will start moving again If the louvre is knocked out of the desired angl...

Страница 7: ...unit may cause the humidity level of the room to rise The air leaving the unit may appear white depending on the humidity or temperature of the room The moisture expelled from inside the unit may smell due to odorants that were not caught by the filter dissolving in the water The photocatalytic filter is mainly for absorbing ammonia The OFF timer cannot be set during internal drying Information Pr...

Страница 8: ...mer Operation OFF timer operation The OFF timer can be set for 1 to 9 hours Set the timer when the power is switched on ON timer operation The ON timer can be set for 1 to 9 hours Set the timer when the power is switched off To set 1 Switch the power on 2 Select operating mode Select desired operating mode 3 Change the louvre swing direction Select the desired setting 4 Set the operating time When...

Страница 9: ...ot dehumidified A single high capacity unit is effective in dehumidifying and drying various locations throughout the home quickly moving from one point to the next 3 Room humidity and sensible temperature comfortably controlled The EASY DEHUMIDIFYING mode controls humidity according to room temperature If the room temperature rises during dehumidification use CIRCULATION mode 1 to lower the sensi...

Страница 10: ...melting internal frost into the water tank The unit will resume automatically when the defrost operation completes This operation will be performed automatically when the room temperature is approximately 15 C or lower When humidity is high this will occur approximately once every 40 minutes for 5 10 minutes How does the dehumidifier work If you pour cold water into a cup the air around it becomes...

Страница 11: ...ter collected is decreased In winter because the temperature is lower than in summer the effect of the dehumidifier is greatly reduced as shown in the graph below Although less water collects in the tank this is not a malfunction Summer humidity Winter dampness If the temperature is low but the humidity is high due to snow or rain operating the unit in LOW TEMP mode will yield better results than ...

Страница 12: ... 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 Stains may remain on the filter but should not affect performance The filter can be soaked for a total of eight times After that replace with a new filter Do not use deter...

Страница 13: ...3 Pour the water out as shown Removing Water from the Tank 1 Remove the water tank Floating element Do not remove or dismantle the float Note Hold the tank this way Grasp handle and slide out Do not remove or dismantle the floating element in the tank If it is removed the unit cannot detect when the tank is full and this could result in leakage Tank lid The unit automatically shuts down and lights...

Страница 14: ... photocatalytic filter becomes depleted over time Replace them when necessary Storage When disposing the unit Dispose according to the garbage regulations in your district Photocatalytic filter Material PET and PS Unit Do not disassemble Dispose according to the garbage regulations in your district Remove the pre filter and replace the photocatalytic filter Photocatalytic filter for replacement Ty...

Страница 15: ... sensing a room temperature below about 0 C shuts down the compressor 4 Thermal fuse The blower shuts down when it is locked or otherwise malfunctions with its temperature exceeding 134 C Safety Devices P1 P11 P10 P100 P2 P3 P5 P4 P20 P13 P101 FM S C R CM SV Blue Blue Blue Black Gray White Red Yellow Overload relay Compressor Solenoid valve Fan motor P200 P201 Sensors Humidity and room temperature...

Страница 16: ...r Button Child lock Mildew guard Low Temp Laundry Easy dehumidifying Tank full Air purifier Mildew guard elite Defrost Off timer on On timer being set On timer counting Low Operation mode Dehumidifying operation Operation off Auto Note Display lamp Operable Timer flashes when on Off stopped inoperable Operable only when swing on lit Operable only when swing on and blower fan rotates LCD lights at ...

Страница 17: ...the MODE button c Mildew guard is reactivated by operating the air purifier button Air purifier ON OFF d Mildew guard is run for 24 hours 3 While mildew guard is operating the dehumidifier is deactivated under the following conditions a Current humidity below 35 detected followed by 2 hours of below 40 However the accumulated time is cleared if the current humidity breaches 41 for 3 consecutive mi...

Страница 18: ... rank Compressor Fan rank Compressor 22 C 29 C 36 C Rank 3 Rank 1 ON ON Rank 3 Rank 1 Rank 3 Rank 2 ON ON Circulate To Dehumidifier mode To Dehumidifier mode Rank 3 Rank 0 Rank 0 Rank 5 To Circulate mode Rank 5 Rank 5 To Circulate mode Dehumidifier mode Circulate Dehumidifier mode Dehumidifier mode Dehumidifier mode Circulate set humidity 60 Dehumidifier mode set humidity 50 Circulate set humidity...

Страница 19: ...re rises too high Step 5 Internal humidity is discharged in Step 4 and the louvre moves to the closed position c Step 3 does not perform the tube temperature or room temperature check that accompanies a microprocessor reset and jumps directly to Step 5 d Mechanisms operated in the above steps are deemed EEPROM data e Internal drying operation does not stop even if tank full is detected 4 Condition...

Страница 20: ... Operation stop Lights when room temperature is below 14 C Power ON Mode button Mode button Mode button Humidity set Low Continuous Max 3 min Mildew guard Low temp Auto Humidity setting 60 Dehumidification stops ON OFF ON OFF ON OFF ON OFF ON OFF OFF 60 59 61 ON OFF ON OFF ON OFF ON OFF ON OFF ON 0 C 12 C ON OFF ON OFF ON OFF Stops at 90 Close Humidity set Dehumidification restarts Easy modes Easy...

Страница 21: ...F ON OFF ON OFF ON OFF ON 0 C 12 C ON OFF ON OFF ON OFF Defrosting Tank full detection High humidity warning Defrost count start Defrosting start Defrosting stop Tank full detected Tank empty detected Swing louvre button Power OFF Humidity increase Humidity decrease Flashes 3 sec standby 40 min elapsed Low priority buzzer Lights when room temperature is below 14 C Lights when room temperature is b...

Страница 22: ...e indicator Buzzer Mildew guard elite lamp ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF 75 ON OFF ON OFF ON OFF ON OFF 0 C 12 C ON OFF ON OFF ON OFF ON OFF timer operation ON timer ON ON timer ON Power ON set to 2 hours 1 hour 2 hours 1 hour 2 hours OFF timer ON OFF timer ON Close Close Lights when room temperature is below 14 C Stops at 90 Indicates swing area only Indicates swing mode ...

Страница 23: ...N OFF ON OFF ON OFF 0 C 45 C ON OFF ON OFF ON OFF Air purifier operation Internal drying operation Air purifier Air purifier Mildew guard elite internal drying Power OFF Automatic internal drying complete Manual internal drying start Manual internal drying override stop Close Close Close Close Stops at 90 Stops at 90 Dehumidifier mode 30 min 10 min Dehumidifier mode Air purifier Lights when room t...

Страница 24: ...24 7 4 General Block Diagram ...

Страница 25: ...25 ...

Страница 26: ...g removed from the receptacle remove and insert each connector two to three times to improve its contact Then insert the power plug into the receptacle to make an operation check Make sure that the flat cable and the connectors are inserted straight Check operation Step 1 Step 2 Dehumidifier doesn t operate at all A Does the fan operate Set mode to HIGH Check connectors NO NO NO YES Are the resist...

Страница 27: ... temperature sensor should be at least 10 C lower than room temperature when normal Are the power consumption and current normal Is the filter blocked Is the operating environment low humidity or low temperature Clean filter Dehumidification may not be possible in low humidity and low temperature environments See page 10 Is dehumidification taking place Water drops are being collected Recheck Step...

Страница 28: ... Normal Abnormal Between P11 pins 8 0kΩ to 20 8kΩ Normal 47 to 51kΩ between P10 pins 3 and 4 Abnormal Open or shorted P11 Open or shorted Normal Abnormal Open or shorted Measure the resistance between terminals using a multimeter component temperature 10 C to 30 C Measure the resistance between terminals using a multimeter winding temperature 10 C to 30 C 2 6kΩ 2 9kΩ Open or shorted Normal Abnorma...

Страница 29: ...eplace the main board Compressor Check blowing performance Check the tube temperature thermistor Check the compressor operating noise Indication Timer display E0 E1 E7 E8 A1 A2 A3 A6 P4 Frequency determination error During operation 8 3 Error Indications and Corrective Actions 8 4 Self Test Program and Execution Procedure 1 Deactivating 3 minute restart prevent lock Start Press the MODE and HUMIDI...

Страница 30: ... The solenoid valves operate for approximately 3 seconds 4 Demo program Start With the power OFF hold down the MODE and SELECTION buttons and press the power button The demo program starts in 3 seconds Operations all buttons are disabled 1 Fan Fixed at rank 3 2 Compressor solenoid valve Stopped 3 LCD LED Lights in random sequence 4 Swing louvre Wide End Remove power plug 0 Latest error 7 Oldest er...

Страница 31: ...directed in Procedures 1 and 2 above 2 Remove the front panel setscrews 2 on each side of the front See Picture 3 3 Remove the front panel setscrews 1 each on the left and right from the rear See Picture 3 4 Slide the front panel upward then forward straight to avoid the swing louvre 5 Pull the front panel forward and remove it by releasing the main board connectors P100 P101 and leadwire set tape...

Страница 32: ...rom the board holder See Picture 7 5 Remove the compressor capacitor and the connector P4 demount the board and remove mica sheet See Picture 8 Picture 8 Step 1 Detach the front panel assembly and rear panel as directed in Procedures 1 to 3 above 2 Disconnect leadwires from the motor support case See Picture 9 3 Remove blower fan assembly setscrews 2 See Picture 10 4 Lift off the blower fan assemb...

Страница 33: ... of drainage outlet 221mm 114mm Step 1 Remove the front pan assembly rear panel and blower fan assembly as directed in Procedures 1 to 4 2 Remove filament tapes from the left and right hooks between the drain pan and base and from the middle 3 3 With the heat exchangers heat radiation cooling lifted on the right side raise the drain pan upward to unhook it from the base 4 Remove the drain pan asse...

Страница 34: ...34 E Model MJ E26VX A1 Exploded View Casing and Structure Parts Catalog 5 1 3 A C B 4 6 10 11 15 12 13 2 14 7 8 9 D e f b c d a ...

Страница 35: ...Part No Exploded View Matching No Part Name Compatibility Miscellaneous Pc 1 unit Safety Part 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C expendable item Model MJ E26VX A1 Parts List Casing and Structure New New New New Parts Catalog M22 B06 738 TANK RX 180RX M22 C52 320 COVER TANK E26VX W 180VX M22 B06 697 LID TANK RX 140 180RX M22 B06 737 LID TANK2 RX 140 180RX M22 ...

Страница 36: ...36 F Be careful not to overtighten Model MJ E26VX A1 Exploded View Casing and Structure Parts Catalog G H J K I f e b d c a 20 30 36 33 34 35 24 37 27 29 21 22 25 28 26 23 31 32 ...

Страница 37: ... Safety Part Model MJ E26VX A1 Parts List Casing and Structure 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 New New New New New New New M22 C51 200 BASE TX 1 M22 B06 700 DRAINPAN RX 1 140 180RX M22 B06 081 BOX PCA RX 1 180RX M22 B06 094 COVER BOX RX 1 180RX M22 B61 113 CASING 180VX 1 180VX M22 C44 620 STEPPING MOTOR NX R 1 E16VX S LEAD WIRE S M VX 1 M22 B26 394 DIVIDING PLATE 180VX 1 180V...

Страница 38: ...38 Parts Catalog Model MJ E26VX A1 Exploded View Electrical Parts 4 B C 7 6 3 E F 8 5 2 1 11 10 9 14 D 13 12 A ...

Страница 39: ...pecified parts atreplacement 4 When ordering parts without part numbers use the design number The order may take a while to process Part No Exploded View Matching No Part Name Compatibility Miscellaneous Pc 1 unit Safety Part Parts Catalog M22 C51 531 PCA MJ E26VX P 1 M22 B33 311 SENSOR HUM 180WX 1 180WX M22 C37 395 PLUG CORD ETX A1 1 M22 B03 500 FAN R X ASSY 1 100RX M22 C51 620 MOTOR E26VX 1 M22 ...

Страница 40: ...40 10 7 8 9 6 5 4 13 20 19 14 3 17 12 15 A 1 2 11 22 23 18 21 16 Model MJ E26VX A1 Exploded View Compressor Parts Parts Catalog ...

Страница 41: ...Matching No Part Name Compatibility Miscellaneous Pc 1 unit Safety Part 1 SCREW SEMS M4 0 7 6 Model MJ E26VX A1 Parts List Compressor Parts 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 A YB691VTE Parts Catalog M22 C44 629 SOLENOID COIL 1 E16VX S M22 C52 629 SOLENOID VALVE R 1 100NX M22 B03 655 DRYER P X 1 100RX M22 C51 555 THERMISTOR EVA 180WX 1 M22 B06 630 COOLER 180RX 1 180RX M22 ...

Страница 42: ...ING MILDEWGUARD or AUTO The unit is automatically controlling the dehumidifier fan and standby times Check to see if the pre filter is clogged Clean according to the maintenance procedures Check to see if the water tank is full Empty the water tank and return it to its original position Check to see if the water tank is inserted properly Adjust the position of the water tank Is the unit set to int...

Страница 43: ...that monitor the humidity level or during drying inside the compressor operates intermittently causing the sound to be heard occasionally The compressor does not activate after turning the unit off or for 3 minutes after plugging the unit into a power socket This is to protect the compressor from damage The heat converter heats rapidly causing a brief odour This is not a malfunction The moisture e...

Страница 44: ...t and cause fire Wipe dust off the power plug and insert the plug firmly If the plug is not fully inserted into the socket dust may gather on the connectors which may cause fire and or electric shock Use 230 240V AC power sockets Connecting to power sockets other than 230 240V AC may result in fire and or electric shock Remove water that has collected in the tank Accidentally drinking the water or...

Страница 45: ...lity that temperature around the hose could drop to freezing point Water inside the hose may freeze and prevent the water in the tank from flowing out The water may leak from the unit and damage surrounding objects Do not use the unit in places that may be subject to oil or flammable gas leakage Such a leak around the unit may cause combustion and fire Do not remove the Styrofoam from the floating...

Страница 46: ...ource when cleaning it When the unit is on the internal fan rotates at high speeds and may cause injury Unplug the unit from the power source when not using the unit for an extended period of time Otherwise it may cause fire and or electric shock caused by an electric leak Precautions cont Warning Keep the unit always in an upright position Inclining the unit may cause water in the tank to leak in...

Страница 47: ...Issued in 2005 12 Printed in Japan ...

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