Mitsubishi Electronics MSZ-FA25VA, MSZ-FA35VA service manual

Contents

Main SERVICE MANUAL CONTENTS Wireless type Models MSZ-FA25V A - MSZ-FA35V A - No. OB371 1TECHNICAL CHANGES MSZ-A09YV - MSZ-FA25VA - MSZ-A12YV - MSZ-FA35VA - E1E1 PART NAMES AND FUNCTIONS 2 MSZ-FA35VA - ACCESSORIES REMOTE CONTROLLER SPECIFICATION 3 When outdoor unit is MXZ type. Specifications and rating conditions of main electric parts INDOOR UNIT 4NOISE CRITERIA CURVES MSZ-FA25VA - E1 MSZ-FA35VA - INDOORUNIT WALL MICROPHONE 1m 0.8m { Required space (Indoor unit) 6WIRING DIAGRAM REFRIGERANT SYSTEM DIAGRAM 7 MSZ-FA25VA- INDOOR UNIT MODELS WIRING DIAGRAM SERVICE FUNCTIONS 8 8-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION 8-1. TIMER SHORT MODE Table 1 NOTE: How to release AUTO RESTART FUNCTION 1 2 8-4. Remote controller TROUBLESHOOTING 2 1 9 9-1. Cautions on troubleshooting Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Page 9-2. Failure mode recall function 1. Flow chart of the indoor/outdoor unit failure mode recall function Page 5. PLASMA DEODORIZING/PLASMAAIR PURIFYING power failure mode table 9-3. Instruction of troubleshooting 9-4. Troubleshooting check table Flashing of POWER lamp indicates abnormalities. Flashing of AREAlamp(left-hand side lamp) indicates abnormality. Flashing of All lamps indicate abnormality. Flashing of AREAlamp(both lamps) indicates abnormality. POWER lamp is lighted. Flashing of PLASMA/WASH lamp indicates abnormality. 9-5. Trouble criterion of main parts MSZ-FA25VA - MSZ-FA35VA - Check of indoor fan motor 9-6. Troubleshooting flow A When POWER lamp flashes 3-time. Indoor fan does not operate. Check of remote controller and receiver P.C. board B OB371_--1qxp 05.1.17 12:50 Page 23 Check of indoor electronic control P.C. board and indoor fan motor C Indoor electronic control P.C.Board How to check mis-wiring and serial signal error D When POWER lamp flashes ON and OFF in every 0.5-second. Outdoor unit does not operate. Check of installation of the horizontal vane OB371_--1qxp 05.1.17 12:50 Page 25 E When All lamps flash ON and OFF every 0.5-second. Indoor unit and outdoor unit do not operate. Check of PLASMA DEODORIZING power F Check of PLASMA AIR PURIFYING power G Check of auto front panel H Indoor unit and outdoor unit do not operate. Electromagnetic noise enters into TV sets or radios I Yes MSZ-FA25VA - MSZ-FA35VA - } Indoor electronic control P.C. board { 9-7. Test point diagram and voltage Interlock switch(Fan) (CN1R1) DISASSEMBLY INSTRUCTIONS 10 Photo 2 Photo 1 <"Terminal with locking mechanism" Detaching points> Photo 4 3. Removing the electrical box Photo 5 Photo 3 Photo 8 Photo 10 5. Removing the vertical vane motor unit 4. Removing the horizontal vane motor unit Photo 6 Photo 13 Photo 11 Photo 12 7. Removing the plasma power P.C. board PARTS LIST11 MSZ-FA25VA - (WH) MSZ-FA35VA - (WH) 11-1. INDOOR UNIT STRUCTURAL PARTS 11-2. ACCESSORYAND REMOTE CONTROLLER 5 6 3 11-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS MSZ-FA25VA- (WH) MSZ-FA35VA- (WH) 11-4. INDOOR UNIT HEAT EXCHANGER 11-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS 11-4. INDOOR UNIT HEAT EXCHANGER 12 OPTIONAL PARTS DEODORIZING CERAMIC FILTER