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HEATING & COOLING
38E,Q
Condensing Units and Heat Pumps
Service Manual
38EH,EN,ES,QH,QN,QS
TABLE OF CONTENTS
Page
INTRODUCTION. 1, 2
Models and SEER Ranges.
1
Factory-Installed Options.
2
SAFETY CONSIDERATIONS . . . . ..
3
SERVICE.
3
Cabinet.
3
• REMOVING LOUVERED CASING
• REMOVING FAN ORIFICE
• ELECTRICAL BOX ACCESS
Electrical.
5-11
• CONTACTORS
• CAPACITORS
• TIME GUARD II
• CRANKCASE HEATER
• PRESSURE SWITCHES
• DEFROST THERMOSTATS
,
• PRINTED-CIRCUIT CONTROL BOARD
• FAN MOTORS
• SERVICE SENTRY CONTROL BOARD
• OUTDOOR THERMOSTATS
Page
Compressor.12-15
• MECHANICAL FAILURES
• ELECTRICAL FAILURES
• SYSTEM CLEAN-UP AFTER BURN-OUT
• COMPRESSOR REMOVAL AND
REPLACEMENT
Refrigeration System .15-20
• REFRIGERATION CYCLE
• LEAK DETECTING
• SERVICE VALVES
• CARRIER COMPATIBLE FITTING
• ACCURATER™ (Bypass Type) COMPONENTS
• REVERSING VALVE
• COIL REMOVAL
• COIL CLEANING
• LIQUID LINE STRAINER
• ACCUMULATOR
• SYSTEM CHARGING (for all approved
combinations)
INTRODUCTION
This Service Manual enables a service technician to
similar, however, there are distinct differences. Tables 1
service and repair a family of similar condensing units
and 2 help to differentiate these differences,
and heat pumps. Outwardly, many models appear
Models and SEER Ranges
Table 1 — Condensing Units
Table 2 — Heat Pumps
MODEL
DIAMETERS
SEER*
MODEL
DIAMETERS
SEER*
C:O.P.f
(in.)
(Nominal)
(in.)
(Nominal)
(Minimum)
38EH015
22
9.0
38QH015
22
•9.0
2.85
38EH018
22
9.0
38QH018
22
9.0
2.85
38 EH 024
22
9.0
38QH024
30
9.0
2.85
38 EH 030
30
9.0
38QH030
30
9.0
2.85
38 EH 036
30
9.0
38QH036
30
9.0
2.85
38 EH 042
30
9.0
38QH042
30
9.0
2.85
38 EH 048
30
9.0
38QH048
30
9.0
2.85
38 EH 060
30
9.0
38QH060
39
9.0
2.85
38EN015
17
8.0
38QN015
17
8.0
2.55
38EN018
17
8.0
38QN018
17
8.0
2.55
38EN024
17
8.0
38QN024
22
8.0
2.55
38EN030
22
8.0
38QN030
22
8.0
2.55
38EN036
22
8.0
38QN036
30
8.0
2.55
38EN042
30
8.0
38QN042
30
8.0 .
2.55
38EN048
' 30
8.0
38QN048
30
8.0
2.55
38EN060
30
8.0
38QN060
30
8.0
2.55
38ES018
30
■
10.0
38QS018
30
10.0
2.85
38ES024
30
10.0
38QS024
30
10.0
2.85
38ES030
30
10.0
38QS030
30
10.0
2.85
38ES036
30
10.0
38QS036
30
10.0
2.85
38ES042
30
10.0
38QS042
30
10.0
2.85
38ES048
30
10.0
38QS048
30
10.0
2.85
38ES060
39
10.0
38QS060
39
10.0
2.85
SEER
Seasonal Energy Efficiency Ratio. The higher the number, the
fC.O.P.
— Coefficient of Performance (heating), determined by dividing
less electrical power required to reach a given capacity. SEER
Btu output by power input required to produce this Btu output,
is derived by dividing output energy by input energy.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book
1
1
|1
|4 |4
PC101
Catalog No. 563-857
Printed
in
U.S.A.
Form38E,Q-1SM
Pg 1
11-85
Replaces: New
Tab
3a|5a|2a|5a
For replacement items use Carrier Specified Paris.
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