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Mitsubishi Electric MUZ-FS18NA User Manual

Mitsubishi Electric MUZ-FS18NA
54 pages
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Models
MUZ-FS06NA
-
U1
MUZ-FS06NAH
-
U1
MUZ-FS09NA
-
U1
MUZ-FS09NAH
-
U1
MUZ-FS12NA
-
U1
MUZ-FS12NAH
-
U1
MUZ-FS15NA
-
U1
MUZ-FS15NAH
-
U1
MUZ-FS18NA
-
U1
MUZ-FS18NAH
-
U1
PARTS CATALOG (OBB873)
MUZ-FS06NA
MUZ-FS09NA
MUZ-FS12NA
MUZ-FS06NAH
MUZ-FS09NAH
MUZ-FS12NAH
CONTENTS
1. TECHNICAL CHANGES ······························2
2. PART NAMES AND FUNCTIONS ··················3
3. SPECIFICATION ········································4
4. OUTLINES AND DIMENSIONS ·····················6
5. WIRING DIAGRAM ·····································8
6. REFRIGERANT SYSTEM DIAGRAM ··········· 10
7. DATA······················································ 12
8. ACTUATOR CONTROL ····························· 23
9. SERVICE FUNCTIONS ······························ 24
10. TROUBLESHOOTING ······························· 25
11. DISASSEMBLY INSTRUCTIONS ················· 46
HFC
utilized
R410A
OUTDOOR UNIT
SERVICE MANUAL
No. OBH873
Indoor unit service manual
MSZ-FS•NA Series (OBH872)

Table of Contents

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Mitsubishi Electric MUZ-FS18NA Specifications

General IconGeneral
CategoryAir Conditioner
BrandMitsubishi Electric
ModelMUZ-FS18NA
Cooling Capacity18, 000 BTU/h
Heating Seasonal Performance Factor (HSPF)10.5
RefrigerantR410A
Operating Temperature (Cooling)14°F to 115°F
Operating Temperature (Heating)-13°F to 75°F
Power Supply208/230V, 60Hz

Summary

Part Names and Functions Identification

Wiring Diagram Schematics

Refrigerant System Diagrams

Performance Data and Charts

Inverter Frequency Capacity and Input Correction

Correction factors for capacity and input based on inverter frequency.

Actuator Control Logic

Service Functions and Settings

Troubleshooting Procedures and Diagnostics

Troubleshooting Safety Precautions

Important safety and preparatory steps before troubleshooting.

Failure Mode Recall Function Procedure

Steps to recall and interpret error codes from the unit's memory.

Troubleshooting LED Indicator Table

A table correlating LED blinking patterns to specific faults and remedies.

Main Part Troubleshooting Criteria

Resistance and diagnostic criteria for key components like thermistors and motors.

Troubleshooting Diagnostic Flows

Step-by-step diagnostic flows for checking major components and systems.

Inverter P.C. Board Test Points

Diagrams showing test points and voltage references on the inverter P.C. board.

Disassembly Instructions

Compressor and 4-Way Valve Removal

Detailed instructions for removing the compressor and the 4-way valve.

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