SERVICE MANUAL
12LRN
Parts marked with "
" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
CHAPTER 1. SPECIFICATION
[1] SPECIFICATION ...........................................1-1
[2] EXTERNAL
DIMENSION ..............................1-3
[3] WIRING
DIAGRAM .......................................1-4
[4] ELECTRICAL
PARTS....................................1-4
CHAPTER 2. EXPLAMATION OF CIRCUIT AND OP-
ERATION
[1] BLOCK
DIAGRAMS ......................................2-1
[2] MICROCOMPUTER CONTROL SYSTEM
........2-3
[3] FUNCTION ....................................................2-7
[4] OPERATION
MANUAL................................2-16
CHAPTER 3. FUNCTION AND OPERATION OF PRO-
TECTIVE PROCEDURES
[1] PROTECTION
DEVICE FUNCTIONS AND
OPERATIONS ...............................................3-1
[2] AIR TO AIR HEAT PUMP OPERATION IN
THERMISTOR ERROR.................................3-3
[3] THERMISTOR TEMPERATURE CHAR-
ACTERISTICS...............................................3-5
[4] HOW TO OPERATE THE OUTDOOR
UNIT INDEPENDENTLY ...............................3-6
[5] GENERAL
TROUBLESHOOTING
CHART
........ 3-6
[6] MALFUNCTION (PARTS) CHECK METH-
OD.................................................................. 3-8
[7] OUTDOOR UNIT CHECK METHOD ............3-11
[8] TROUBLESHOOTING
GUIDE .................... 3-14
CHAPTER 4. REFRIGERATION CYCLE
[1] FLOW FOW REFRIGERANT ........................ 4-1
[2] STANDARD
CONDITION .............................. 4-1
[3] TEMPERATURE AT EACH PART AND
PRESSURE IN 3-WAY VALVE....................... 4-1
[4] PERFORMANCE
CURVES ........................... 4-2
CHAPTER 5. DISASSEMBLY PROCEDURE
[1] INDOOR
UNIT ............................................... 5-1
[2] THE WIRE GUARD AND THE PLASM-
CLUSTER UNIT............................................. 5-4
[3] OUTDOOR
UNIT ........................................... 5-6
Parts Guide
TopPage
CONTENTS
SPLIT TYPE
12LR-N
MODEL
In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only
parts
identical to those specified should be used.
AIR TO AIR HEAT PUMP
09LR-N
Summary of Contents for 09LR-N
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