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38MVC, 38MVQ, 40MVC, 40MVQ
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12
WIRING DI
AGRAMS (CONT
.)
Fig.
8 – W
ir
ing D
iagr
am 38MVC
012
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-3 W/ 40MVC
012
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-3
38/40MV
C, MVQ
Contents
Main
Service Manual
SAFETY CONSIDERATIONS
!WARNING
INTRODUCTION
MODEL NUMBER NOMENCLATURE
OUTDOOR UNIT
INDOOR UNIT
SERIAL NUMBER NOMENCLATURE
STANDARD FEATURES AND ACCESSORIES
INDOOR UNITS
38/40MVC, MVQ
OUTDOOR UNITS LOW AMBIENT KIT
CRANKCASE HEATER
SPECIFICATIONS -- COOLING ONLY UNITS
38/40MVC, MVQ
SPECIFICATIONS -- HEAT PUMP UNITS
DIMENSIONS -- INDOOR
DIMENSIONS -- OUTDOOR
H
W
L1
CLEARANCES -- INDOOR
CLEARANCES -- OUTDOOR
SYSTEM OPERATING ENVELOPE
38/40MVC, MVQ
53MVC/MVQ System Operating Envelope Chart
Cooling Continuous Operation
Heating Continuous Operation
CONNECTION DIAGRAMS
Page
Page
Page
Page
Page
Page
Page
REFRIGERATION CYCLE DIAGRAM
REFRIGERANT LINES
SYSTEM EVACUATION AND CHARGING
CAUTION
t
!
SYSTEM VACUUM AND CHARGE
Outdoor Unit Indoor Uni
CONTROL SYSTEM
SYSTEM SAFETIES
3MINUTETIMEDELAY
COMPRESSOR OVERCURRENT PROTECTION
S S S S
SEQUENCE OF OPERATION
Interface
MODES OF OPERATION
Page
Page
TROUBLESHOOTING
DIAGNOSTIC HIERARCHY
CHART 1 -- INDOOR FAN SPEED OUT OF CONTROL
CHART 2 -- TEMPERATURE SENSOR
CHART 3 -- COMPRESSOR OVERCURRENT PROTECTION
CHART 4 -- INDOOR UNIT COMMUNICATION ERROR SIZE 9K AND 12K
CHART 5 -- OUTDOOR UNIT PROTECTS
*
CHART 6 -- INDOOR UNIT COMMUNICATION ERROR SIZE 18K AND 24K
CHART 7 -- UNIT NOT RUNNING, NO DIAGNOSTIC CODE
CHART 8 -- UNIT NOT RUNNING OPTIMALLY
CHART 9 -- UNIT NOT RUNNING OPTIMALLY (HP IN HEATING)*
CHART 10 -- COMPRESSOR
CHART 11 -- OUTDOOR MOTOR
CHART 12 -- REVERSING VALVE
CHART 13 -- RECEIVER BOARD
APPENDIX
38/40MVC, MVQ
A 1 -- 5 3 M V C 0 0 9 -- -- -- 1 / 5 3 M V C 0 1 2 -- -- -- 1
A 2 -- 5 3 M V Q 0 0 9 -- -- -- 1 / 5 3 M V Q 0 1 2 -- -- -- 1
A 3 -- 5 3 M V C 0 1 2 -- -- -- 3
38/40MVC, MVQ
A 4 -- 5 3 M V Q 0 1 2 -- -- -- 3
A 5 -- 5 3 M V C 0 1 8 -- -- -- 3
A6 -- Characteristics of Temperature Sensor
A7 -- Fuse Chart
A8 -- Indoor Unit Diagnostic Guides
9K & 12K Units
18K & 24K Units
Fig. 34 LED Display Panel