Service Manual
40GXC / 38GXC Cooling Only
40GXQ / 38GXQ Heat Pump
Inverter---Driven High Wall Duct---Free Split System
Sizes 009 to 012
INTRODUCTION
This Service Manual provides the necessary information to service,
repair, and maintain the 38/40GXC(Q).
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS
1
. . . . . . . . . . . . . . . . . . . . . . . . .
MODEL / SERIAL NUMBER NOMENCLATURE
2
. . . . . . . . .
STANDARD FEATURES AND ACCESSORIES
3
. . . . . . . . . . .
SPECIFICATIONS
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIMENSIONS
5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLEARANCES
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYSTEM OPERATING ENVELOPE
7
. . . . . . . . . . . . . . . . . . . .
ELECTRICAL DATA
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WIRING
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONNECTION DIAGRAMS
7
. . . . . . . . . . . . . . . . . . . . . . . . . .
WIRING DIAGRAMS
8--9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REFRIGERATION CYCLE DIAGRAM
10
. . . . . . . . . . . . . . . . .
REFRIGERANT LINES
11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYSTEM EVACUATION AND CHARGING
11
. . . . . . . . . . . . .
CONTROL SYSTEM
12--13
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SEQUENCE OF OPERATION
13
. . . . . . . . . . . . . . . . . . . . . . . .
MODES OF OPERATION
13--15
. . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING
16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC CHARTS
23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
APPENDIX
24--27
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SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes and
National Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety--alert symbol
!
!
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand these signal words: DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which
will
result in
severe personal injury or death. WARNING signifies hazards
which
could
result in personal injury or death. CAUTION is used
to identify unsafe practices which
may
result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which
will
result in enhanced installation, reliability, or
operation.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.
