Carrier 040-420- Manual
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Table of Contents:
- Page 2 – on
- Page 4 – stop; Table 2; Sensors; Table 3; S e n s o r; Compressor Protection Control Module
- Page 6 – Table 4A
- Page 7 – T a b l e 4 A
- Page 12 – may
- Page 15 – Al l
- Page 16 – tt
- Page 23 – T a b l e 4 D
- Page 26 – Head Pressure Control; Table 5
- Page 28 – Keypad and Display Module (Also Called; Keypad and Display Module; Table 6; ElEST
- Page 29 – Table 8
- Page 31 – cl
- Page 33 – During compressor test, compressors start and run for; SCHEDULE; can be
- Page 35 – qt; att; c lt; c lt
- Page 36 – Head
- Page 37 – to
- Page 38 – Status
- Page 39 – Chilled Water Set Point; and
- Page 40 – Cooling Return W a t e r R e s e t
- Page 41 – Cooling External Temperature Reset
- Page 42 – Dual Set Point; Externally powered (loop isolator required)
- Page 43 – Cooling Temperature Reset; q ‘n
- Page 44 – Demand Limiting
- Page 46 – the; Schedule Function; E x a m p l e 9 c o n t i n u e d n e x t p a g e .
- Page 47 – S a m p l e T i m e S c h e d u l e
- Page 49 – Alarm Codes; Codes 1
- Page 50 – Compressor Alarm Circuit; Grounding the supply transformer can result in
- Page 52 – C R ’ S
- Page 56 – Electronic Expansion Valve; c E x p a n s i o n V a l v e ( E X V ); EXV Cable Connections to
- Page 58 – Thermistor and Pressure Transducer Locations
- Page 59 – Thermistor Locations; Thermistors
- Page 60 – To replace thermistors T7 and (040-210 and associated; Pressure Transducers; Do not pull on trans-; P r e s s u r e T r a n s d u c e r
- Page 63 – Lead Compressor Transducer and Thermistor Locations
- Page 64 – Address
- Page 65 – Sensor Bus Wiring; Processor Module; Low-Voltage Relay Module
- Page 66 – not; Out Module
- Page 68 – ACCESSORY UNLOADER INSTALLATION; Standard and Accessory Unloaders; Installation
- Page 69 – Accessory Unloader Control Wiring
- Page 70 – COM
- Page 71 – FIELD WIRING; Demand Limit
- Page 73 – UNITS; Remote Dual Set Point Control; Remote Alarm; REPLACING DEFECTIVE
with
CONTENTS
P a g e
SAFETY CONSIDERATIONS . . . . . . . , . , . . , .
GENERAL . . . . . . , . . . . , . , . . . , . , . . . . , . , . . . . . . . . 2
MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . 2-4
Processor Module . . . . . . . . . . . . . . . . . . . . . . . . ...2
Low-Voltage Relay Module . , . . . . . . , . , . , , . . . . . 2
Electronic Expansion Valve Module . . . . . . . . . . . 2
Options Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Keypad and Display Module
(Also Called
or LID)
. . . . . . . . . . . . . . . . . . 2
Control Switch . . . . , . . . . . . . . . . . . . . . . . . . . . . . . 2
E l e c t r o n i c E x p a n s i o n V a l v e ( E X V )
. . . , . . . . . . . . 4
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4
Compressor Protection Control
Module (CPCS) . . , . . . . . . . . . . . . . . . . . . . . . . . . . 4
OPERATION DATA . . . . . . . . . . . . . , . . . . , . . . . , 5-47
Capacity Control . . . . , , . . . . . . . . . . . . . . . . . . . . . . 5
Head Pressure Control . . . . . . . . . . . . . . . . . . . . 26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...27
Keypad and Display Module
(Also Called
or
28
ACCESSING FUNCTIONS
SUMMARY DISPLAY
KEYPAD OPERATING INSTRUCTIONS
STATUS FUNCTION
TEST FUNCTION
HISTORY FUNCTION
SET POINT FUNCTION
SERVICE FUNCTION
SCHEDULE FUNCTION
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . .
48-67
C h e c k i n g D i s p l a y C o d e s . . . . . . . . . . . . . . . . . . . . .
48
Unit Shutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48
Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . .
48
S i n g l e C i r c u i t S t o p p a g e . . . . . . . . . . . . . . . . . . . . .
48
Lag Compressor Stoppage . . . . . . . . . . . . . . . . . .
48
SAFETY CONSIDERATIONS
Installing, starting up, and servicing this equipment can
be hazardous due to system pressures, electrical compo-
nents, and equipment location (roof, elevated structures, etc.).
Only trained, qualified installers and service mechanics should
install, start-up, and service this equipment.
W h e n w o r k i n g o n t h i s e q u i p m e n t , o b s e r v e p r e c a u t i o n s i n
the literature, and on tags, stickers, and labels attached to
t h e e q u i p m e n t , a n d a n y o t h e r s a f e t y p r e c a u t i o n s t h a t a p p l y .
Follow all safety codes. Wear safety glasses and work gloves.
Use care in handling, rigging, and setting this equipment,
and in handling
electrical components.
P a g e
R e s t a r t P r o c e d u r e . . . . . . . . . . . . . . . . . . . . . . . ...48
l
POWER FAILURE EXTERNAL TO THE UNIT
Alarm Codes . . . . . . , . . . . . . . , . . . . . . . . . . , . . . . . 49
Compressor Alarm Circuit . . . . . . . . . . . . . . . .
50
Electronic Expansion Valve . . . . . . . . . . . . . . . . , . 56
l
EXV OPERATION
l
CHECKOUT PROCEDURE
Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...60
LOCATION
l
THERMISTOR REPLACEMENT
T2, T7, T8)
(Compressor and Cooler)
Pressure Transducers . . . , . . . , . . . . . . . . . . . . . 60
l
TROUBLESHOOTING
l
TRANSDUCER REPLACEMENT
Control Modules . . . . . . . . . . . . . . . . . . . . . . . , . . . . 64
l
PROCESSOR MODULE (PSIO),
MODULE (SIO), LOW-VOLTAGE RELAY
MODULE (DSIO), AND EXV DRIVER MODULE
(DSIO)
. RED LED
l
GREEN LED
l
PROCESSOR MODULE (PSIO)
l
LOW-VOLTAGE RELAY MODULE (DSIO)
.
MODULE (SIO)
ACCESSORY UNLOADER INSTALLATION
68-7 1
Installation . . . . . . . , . . . . . . , . . . . . . . . . . . .
. 68
l
040-110, 130 (60 Hz) UNITS
(and associated modular units)
l
130 (50 Hz), 150-210, 225, 250, and 280 UNITS
(and associated modular units)
FIELD WIRING . . . . . . . . . . . . , . . . . . . . . . . . . . . . 71-73
REPLACING DEFECTIVE PROCESSOR
MODULE (PSIO)
. . . . . . . . . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...73
Electrical shock can cause personal injury and death.
Shut off all power to this equipment during installation
and service. There may be more than one disconnect
switch. Tag all disconnect locations to alert others not
This unit uses a microprocessor-based electronic con-
trol system. Do not use jumpers or other tools
to
short
out components, or to bypass or otherwise depart from
recommended procedures. Any short-to-ground of the
control board or accompanying wiring may destroy the
electronic modules or electrical components.
M a n u f a c t u r e r r e s e r v e s t h e r i g h t t o d i s c o n t i n u e , o r c h a n g e a t a n y t i m e , s p e c i f i c a t i o n s o r d e s i g n s w i t h o u t n o t i c e a n d w i t h o u t i n c u r r i n g o b l i g a t i o n s .
Book 2
P C 9 0 3
Catalog No.
Printed in S A.
F o r m
1 - 9 4
R e p l a c e s :
T ,
T a b
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