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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Models
MSZ-FA25VA -
MSZ-FA35VA -
Indication of model name
MSZ-FA25VA -
MSZ-FA35VA -
NOTE:
This service manual describes technical data of the indoor units.
•As for outdoor units MUZ-FA25VA-
MUZ-FA35VAH-
E1
•As for outdoor units MXZ-3A54VA-
refer to service manual OB377.
All manuals and user guides at all-guides.com
(WH)
E1
(WH)
E1
E1
E1
, MUZ-FA35VA-
E1
, refer to service manual OB372.
, MXZ-4A71VA-
E1
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES ·······························6
5. OUTLINES AND DIMENSIONS ·························7
6. WIRING DIAGRAM ············································8
7. REFRIGERANT SYSTEM DIAGRAM ················8
8. SERVICE FUNCTIONS ······································9
9. TROUBLESHOOTING······································11
10. DISASSEMBLY INSTRUCTIONS·····················31
11. PARTS LIST······················································35
12. OPTIONAL PARTS···········································38
, MUZ-FA25VAH-
and
E1
E1
and MXZ-4A80VA-
,
E1
E1
No. OB371
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Table of Contents
Related Manuals for Mitsubishi Electric MSZ-FA25VA-E1 WH
Summary of Contents for Mitsubishi Electric MSZ-FA25VA-E1 WH
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Page 1: Table Of Contents
All manuals and user guides at all-guides.com SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS No. OB371 SERVICE MANUAL Wireless type Models MSZ-FA25VA - (WH) MSZ-FA35VA - (WH) CONTENTS 1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS······················3 3. SPECIFICATION·················································5 4. NOISE CRITERIA CURVES ·······························6 5. -
Page 2: Technical Changes
All manuals and user guides at all-guides.com TECHNICAL CHANGES MSZ-A09YV - MSZ-FA25VA - MSZ-A12YV - MSZ-FA35VA - 1. Indication of capacity has been changed.(BTU base kW base) 2. Controller method between indoor and outdoor has been changed. 3. Power supply method has been changed (change to supply from outdoor unit). 4. -
Page 3: Part Names And Functions
All manuals and user guides at all-guides.com PART NAMES AND FUNCTIONS INDOOR UNIT MSZ-FA25VA - MSZ-FA35VA - Air inlet PLASMA AIR PURIFYING filter Front panel Panel PLASMA DEODORIZING filter Heat exchanger Fan guard Anti-mold air filter Air outlet Vertical vane Horizontal vane Remote controller Line flow fan... - Page 4 All manuals and user guides at all-guides.com MSZ-FA25VA - MSZ-FA35VA - MSZ-FA25VA - ACCESSORIES MSZ-FA35VA - Installation plate Installation plate fixing screw 4 o 25 mm Remote controller holder Fixing screw for 3 3.5 o 1.6 mm (Black) Battery (AAA) for remote controller Wireless remote controller Felt tape (Used for left or left-rear piping) REMOTE CONTROLLER...
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Page 5: Specification
All manuals and user guides at all-guides.com SPECIFICATION Indoor model MSZ-FA25VA - MSZ-FA35VA - Cooling Function Cooling Heating Heating Single phase Single phase Power supply 230V,50Hz 230V,50Hz Air flow(Super High) K /h Capacity Air flow(High W /Med. W /Low W ) 474 W /354 W /252 W 498 W /384 W /264 W 474 W /354 W /258 W... -
Page 6: Noise Criteria Curves
All manuals and user guides at all-guides.com NOISE CRITERIA CURVES MSZ-FA25VA - MSZ-FA35VA - FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING Super High Super High HEATING HEATING Test conditions, Test conditions, Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19: Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19: Heating : Dry-bulb temperature 20: Wet-bulb temperature 15: Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:... -
Page 7: Outlines And Dimensions
All manuals and user guides at all-guides.com OUTLINES AND DIMENSIONS MSZ-FA25VA - Unit : mm MSZ-FA35VA - INDOOR UNIT 11o26 Oblong hole 11o20 Oblong hole Installation plate Indoor unit Air in Wall hole Installation plate Liquid line [6.35 - 0.5m Gas line [9.52 - 0.43m Insulation [35 O.D [19 I.D... -
Page 8: Wiring Diagram
All manuals and user guides at all-guides.com WIRING DIAGRAM MSZ-FA25VA - MSZ-FA35VA - MODELS WIRING DIAGRAM INDOOR UNIT INDOOR ELECTRONIC CONTROL P.C. BOARD RT13 TAB3 230V~ RT12 DB111 T111 TO OUTDOOR UNIT RT11 12-24V NR11 CONNECTING CN201 LD104 CN211 101(A) 105(T) INTERLOCK SW P.C. -
Page 9: Service Functions
All manuals and user guides at all-guides.com SERVICE FUNCTIONS MSZ-FA25VA - MSZ-FA35VA - 8-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS the electronic control P.C. board. The time will be shortened as follows. (Refer to 9-7.) Set time : 1-minute 1-second Set time : 3-minute... - Page 10 All manuals and user guides at all-guides.com How to release “AUTO RESTART FUNCTION” Turn off the main power for the unit. Solder the Jumper wire to JR07 on the indoor electronic control P.C. board. (Refer to 9-7.) JR07 NOTE: • The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote controller.
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Page 11: Troubleshooting
All manuals and user guides at all-guides.com TROUBLESHOOTING MSZ-FA25VA - MSZ-FA35VA - 9-1. Cautions on troubleshooting 1. Before troubleshooting, check the following: 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for mis-wiring. 2. Take care the following during servicing. 1) Before servicing the air conditioner, be sure to turn off the unit first with the remote controller, and then after confirming the horizontal vane is closed, turn off the breaker and / or disconnect the power plug. - Page 12 All manuals and user guides at all-guides.com 6. How to remove and install PLASMA DEODORIZING / AIR PURIFYING filter units If PLASMA/WASH lamp on the indoor unit blinks, clean the filters as soon as possible. The lamp will start blinking when accumulated operating time exceeds 330 hours.
- Page 13 All manuals and user guides at all-guides.com INFORMATION FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT : MXZ series Multi system air conditioner can connect two or more indoor units with one outdoor unit. •Unit won’t operate in case the total capacity of indoor units exceeds the capacity of outdoor units. Do not connect indoor units beyond the outdoor unit capacity.
- Page 14 All manuals and user guides at all-guides.com 9-2. Failure mode recall function Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table disappears, the memorized failure details can be recalled.
- Page 15 All manuals and user guides at all-guides.com 2. Flow chart of PLASMA DEODORIZING/PLASMA AIR PURIFYING power failure mode recall function Operational procedure There is a possibility that the plasma unit is abnormal. Confirm the presence of abnormality according to the following procedures. Confirm that the remote controller is in the failure mode recall function.
- Page 16 All manuals and user guides at all-guides.com 4. Indoor unit failure mode table NOTE: Blinking patterns of this mode differs from the ones of Troubleshooting check table(9-4.). Abnormal point POWER lamp Detection method Check point (Failure mode) Not lighted Normal –...
- Page 17 All manuals and user guides at all-guides.com 9-3. Instruction of troubleshooting w"Test Run operation" If blinking of OPERATION means the operation INDICATOR lamp cannot within 30 minutes after be checked, it can be checked Start EMERGNCY OPERATION with failure mode recall function. switch is pressed.
- Page 18 All manuals and user guides at all-guides.com 9-4. Troubleshooting check table · Flashing of POWER lamp indicates abnormalities. Lighted Blinking Not lighted NOTE : Before taking measures, make sure that the symptom reappears for accurate troubleshooting. Self check table Abnormal Operation indicator lamp Symptom Detection method...
- Page 19 All manuals and user guides at all-guides.com · Flashing of AREA lamp(left-hand side lamp) indicates abnormality. Lighted Blinking Not lighted NOTE : Before taking measures, make sure that the symptom reappears for accurate troubleshooting. Self check table Abnormal Operation indicator lamp Symptom Detection method Check point...
- Page 20 All manuals and user guides at all-guides.com 9-5. Trouble criterion of main parts MSZ-FA25VA - MSZ-FA35VA - Part name Check method and criterion Figure Room temperature Measure the resistance with a tester. (Part temperature 10˚C ~ 30˚C) thermistor(RT11) Normal Abnormal Indoor coil thermistor Open or short-circuit 8 k"...
- Page 21 All manuals and user guides at all-guides.com 9-6. Troubleshooting flow When POWER lamp flashes 3-time. Indoor fan does not operate. Check of indoor fan motor The indoor fan motor error has occurred, and the indoor fan doesn't operate. Turn OFF the power supply. Insert a stick such as a screw driver into the air outlet, and check if there is any catch in the rotation of the line...
- Page 22 All manuals and user guides at all-guides.com Indoor unit operates by pressing EMERGENCY OPERATION switch, but does not operate with the remote controller. Check of remote controller and receiver P.C. board wCheck if the remote controller is exclusive for this air conditioner. Switch on the remote controller.
- Page 23 All manuals and user guides at all-guides.com The unit does not operate with the remote controller. Also, POWER lamp does not light up by pressing EMERGENCY OPERATION switch. Check of indoor electronic control P.C. board and indoor fan motor Short circuit: Turn OFF the power supply.
- Page 24 All manuals and user guides at all-guides.com When POWER lamp flashes ON and OFF in every 0.5-second. Outdoor unit does not operate. How to check mis-wiring and serial signal error Turn OFF the power supply. Is there rated voltage of Check the power 230V AC in the power supply.
- Page 25 All manuals and user guides at all-guides.com When All lamps flash ON and OFF every 0.5-second. Indoor unit and outdoor unit do not operate. Check of installation of the horizontal vane Start Turn OFF the power supply. Relock the stopper of the Is the stopper of the horizontal vane horizontal vane to the indoor unit.
- Page 26 All manuals and user guides at all-guides.com When PLASMA/WASH lamp flashes 2-time. w w The power failure mode for PLASMA DEODORIZING power is memorized when the failure mode is called. Check of PLASMA DEODORIZING power After performing the check, make sure to release the failure mode recall function. High voltage (approx.
- Page 27 All manuals and user guides at all-guides.com When PLASMA/WASH lamp flashes 2-time. w w The power failure mode for PLASMA AIR PURIFYING power is memorized when the failure mode is called. Check of PLASMA AIR PURIFYING power After performing the check, make sure to release the failure mode recall function. High voltage (approx.
- Page 28 All manuals and user guides at all-guides.com Indoor unit and outdoor unit do not operate. Check of auto front panel Turn the remote controller ON. Does the front panel automatically open? (Does it start to move?) Is the connector of the front panel driving motor unit or the indoor electric control P.C.
- Page 29 All manuals and user guides at all-guides.com Electromagnetic noise enters into TV sets or radios Is the unit earthed? Earth the unit. Is the distance between the Extend the distance between antennas and the indoor the antennas and the indoor unit within 3m, or is the unit, or the antennas and the distance between the...
- Page 30 All manuals and user guides at all-guides.com 9-7. Test point diagram and voltage MSZ-FA25VA - MSZ-FA35VA - Indoor electronic control P.C. board Cement resistance 5V DC 12V DC (R111) Indoor fan motor (CN211) 1311V DC 3(-) Fiducial terminal of cathode side on measur- ing high-voltage DC 415V DC 5(+)3-6V DC...
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Page 31: Disassembly Instructions
All manuals and user guides at all-guides.com DISASSEMBLY INSTRUCTIONS <"Terminal with locking mechanism" Detaching points> The terminal which has the locking mechanism can be detached as shown below. There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism. The terminal without locking mechanism can be detached by pulling it out. - Page 32 All manuals and user guides at all-guides.com OPERATING PROCEDURE PHOTOS 2. Removing the electronic control P.C. board, the Photo 3 power monitor receiver P.C. board, i-see Sensor, SW P.C. board and the terminal block (1) Remove the horizontal vane, the panel (Refer to 1.) and the corner box.
- Page 33 All manuals and user guides at all-guides.com OPERATING PROCEDURE PHOTOS Photo 6 4. Removing the horizontal vane motor unit (1) Remove the horizontal vane and the panel. (Refer to 1.) Screw of the horizontal (2) Remove the screws of the horizontal vane motor unit, vane motor unit and pull out the horizontal vane motor unit.
- Page 34 All manuals and user guides at all-guides.com OPERATING PROCEDURE PHOTOS 7. Removing the plasma power P.C. board Photo 11 (1) Remove the horizontal vane, the panel (Refer to 1.) and the corner box. (2) Remove the switch holder and the electrical cover. Front panel Screw of the plasma (Refer to 3.)
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Page 35: Parts List
All manuals and user guides at all-guides.com PARTS LIST MSZ-FA25VA - (WH) MSZ-FA35VA - (WH) 11-2. ACCESSORY AND REMOTE 11-1. INDOOR UNIT STRUCTURAL PARTS CONTROLLER 11-1. INDOOR UNIT STRUCTURAL PARTS Q'ty/unit Symbol Remarks Part No. Part name in Wiring MSZ-FA25VA - MSZ-FA35VA - Diagram (WH) - Page 36 All manuals and user guides at all-guides.com MSZ-FA25VA - (WH) MSZ-FA35VA - (WH) 11-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS SAFETY PLASMA DEVICE POWER (PLASMA UNIT) P.C.BOARD SLEEVE BEARING INTERLOCK SWITCH (FAN) SW P.C. BOARD POWER MONITOR RECEIVER P.C. BOARD i-see Sensor POWER MONITOR MOTOR...
- Page 37 All manuals and user guides at all-guides.com 11-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS Q'ty/unit Symbol in Wiring Part No. Part name Remarks MSZ-FA25VA- MSZ-FA35VA- Diagram (WH) (WH) E02 751 509 BEARING MOUNT E02 001 504 SLEEVE BEARING E02 897 702 DRAIN HOSE E02 913 235 NOZZLE ASSEMBLY...
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Page 38: Optional Parts
All manuals and user guides at all-guides.com OPTIONAL PARTS DEODORIZING CERAMIC FILTER Replacement of the deodorizing ceramic filter(about once every 6 years) Deodorizing ceramic filter is installed inside PLASMA DEODORIZING filter unit. The filter is fragile. Handle it with care. NOTE: PLASMA DEODORIZING filter unit may not operate properly if the deodorizing ceramic filter is not installed. - Page 39 All manuals and user guides at all-guides.com...
- Page 40 All manuals and user guides at all-guides.com HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD New publication, effective Jan. 2005 Distributed in Jan. 2005. No. OB371 6 Specifications subject to change without notice.