Table of Contents
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Condizionatore MSZ-WN25
INDOOR UNIT
SERVICE MANUAL
Models
MSZ-WN25VA
MSZ-WN35VA
MSZ-WN25VA
MSZ-WN35VA
NOTE:
RoHS compliant products have
<G> mark on the spec name plate.
o cerca il tuo prodotto tra le
-
E1
-
E1
CONTENTS
1. TECHNICAL CHANGES ······························3
2. PART NAMES AND FUNCTIONS ··················4
3. SPECIFICATION ········································5
4. NOISE CRITERIA CURVES ··························6
5. OUTLINES AND DIMENSIONS ·····················7
6. WIRING DIAGRAM ·····································8
7. REFRIGERANT SYSTEM DIAGRAM ·············9
8. SERVICE FUNCTIONS ······························ 10
9. MICROPROCESSOR CONTROL ················ 11
10. TROUBLESHOOTING ······························· 15
11. DISASSEMBLY INSTRUCTIONS ················· 27
PARTS CATALOG (OBB764)
migliori offerte di Climatizzazione
No. OBH764
Outdoor unit service manual
MUZ-WN·VA Series (OBH765)
Mitsubishi
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Table of Contents
Related Manuals for Mitsubishi Electric MSZ-WN35VA - E1
Summarization of Contents
PART NAMES AND FUNCTIONS
ACCESSORIES
Lists all included accessories with their quantities for the indoor units.
SPECIFICATION
Specifications and rated conditions of main electric parts
Details electrical specifications, fuse types, motors, and varistors used in the unit.
SERVICE FUNCTIONS
TIMER SHORT MODE
Explains how to shorten the timer mode for service purposes on the control board.
HOW TO SET REMOTE CONTROLLER EXCLUSIVELY FOR A PARTICULAR INDOOR UNIT
Guides on assigning numbers to remote controllers for multi-unit systems.
AUTO RESTART FUNCTION
Describes the function that resumes operation with previous settings after power interruption.
MICROPROCESSOR CONTROL
COOL OPERATION
Details the steps and conditions for operating the air conditioner in cooling mode.
DRY OPERATION
Explains the procedure for operating the air conditioner in dry mode.
HEAT OPERATION
Outlines the steps for operating the air conditioner in heating mode.
AUTO VANE OPERATION
Describes the automatic adjustment of the horizontal vane for optimal air distribution.
TIMER OPERATION (ON/OFF TIMER)
Explains how to set and release ON and OFF timers for the air conditioner.
TROUBLESHOOTING
CAUTIONS ON TROUBLESHOOTING
Lists essential safety precautions and checks before performing troubleshooting.
FAILURE MODE RECALL FUNCTION
Explains how to recall and identify past abnormal conditions using LED indicators.
INSTRUCTION OF TROUBLESHOOTING
Provides a flowchart to guide troubleshooting based on unit behavior and indicator status.
TROUBLESHOOTING CHECK TABLE
A table detailing abnormal points, symptoms, conditions, and remedies for various error codes.
TROUBLE CRITERION OF MAIN PARTS
Specifies methods and criteria for checking the resistance of key components like thermistors and motors.
TROUBLESHOOTING FLOW
Step-by-step guide for diagnosing issues related to the indoor fan motor.
Check of remote controller and indoor electronic control P.C. board
Troubleshooting steps for issues related to the remote controller and indoor unit receiver.
Check of indoor P.C. board and indoor fan motor
Detailed checks for indoor P.C. boards and fan motor, including resistance and voltage measurements.
How to check miswiring and serial signal error
Procedures to diagnose and resolve miswiring or serial signal communication problems.
Electromagnetic noise enters into TV sets or radios
Guidance on troubleshooting electromagnetic interference affecting external devices.
TEST POINT DIAGRAM AND VOLTAGE
Provides diagrams showing test points and expected voltage values for troubleshooting.
DISASSEMBLY INSTRUCTIONS
Removing the panel
Instructions for safely removing the front panel of the indoor unit.
Removing the indoor power P.C. board and the electrical box
Steps to disconnect and remove the indoor power P.C. board and electrical box.
Removing the indoor electronic control P.C. board
Procedure for disconnecting and removing the indoor electronic control P.C. board.
Removing the vane motor
Steps to disconnect and remove the vane motor assembly.
Removing the indoor fan motor, the indoor coil thermistor and the line flow fan
Detailed instructions for removing the fan motor, coil thermistor, and line flow fan.
Fixing the indoor coil thermistor
Guidance on correctly mounting the indoor coil thermistor using clip or holder methods.
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