Carrier HS070-160- Manual
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Table of Contents:
- Page 2 – Control Panel; qCLR
- Page 4 – C O N T R O L S E Q U E N C E; the; Off Cycle; Table 4
- Page 5 – on page IO
- Page 10 – q cl
- Page 11 – Programming Functions
- Page 12 – or
- Page 14 – Cooler Sensor Locations; Quick Test
- Page 15 – q u
- Page 19 – Electronic Expansion; Quick; EXV
- Page 20 – Thermistor Locations
- Page 22 – Thermistors
- Page 23 – Modules; Lit; All
- Page 24 – Sensor Bus Wiring; M o d u l e
- Page 25 – K e y b o a r d / D i s p l a y M o d u l e
- Page 26 – T R O U B L E S H O O T I N G
HEATING
COOLING
Flotronic Plus Reciprocating Liquid Chillers
Controls Troubleshooting Guide
Model E Units Have Microprocessor Controls
and Electronic Expansion Valves
CONTENTS
SAFETY CONSIDERATIONS
Page
S A F E T Y
. . . . . . . . . . . . . . . .
1
FLOTRONIC PLUS CONTROL SYSTEM . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
.
PROCESSOR MODULE . . . . . . . . . . . . . . . . . . .
2
l
LOW-VOLTAGE RELAY MODULE . . . . . . . . .
2
. EXV
E X P A N S I O N
VALVE) DRIVER MODULE . . . . . . . . . . . . . . .
2
.
K E Y B O A R D A N D D I S P L A Y M O D U L E . . . . . 2
.
ELECTRONIC EXPANSION VALVE . . . . . . . . 3
l
THERMISTORS . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
.
C O N T R O L . . . . . . . . . . . . . . . . . . . .
3
CONTROL SEQUENCE . . . . . . . . . . . . . . . . . . . . .
Off Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
S t a r t - U p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Capacity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
l
SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
U n i t S h u t d o w n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . . .
5
Single-Circuit Stoppage . . . . . . . . . . . . . . . . . . . . .
5
Lag Compressor Stoppage . . . . . . . . . . . . . . . . . . .
5
Restart Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
l
GENERAL POWER
. . . . . . . . . . . . . .
5
l
BLOWN FUSE
POWER FEED
DISCONNECT . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
l
LOW WATER TEMPERATURE
C U T O U T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
l
AUXILIARY INTERLOCK . . . . . . . . . . . . . . . . .
5
l
OPEN CONTROL
FUSE . . . . . . . . . .
5
.
FREEZE PROTECTION . . . . . . . . . . . . . . . . . . . .
5
HIGH-PRESSURE SWITCH . . . . . . . . . . . . . . . .
5
l
LOSS OF CHARGE SWITCH . . . . . . . . . . . . . . .
5
. COMPRESSOR DISCHARGE
T E M P E R A T U R E S W I T C H . . . . . . . . . . . . . . . . .
5
.
OIL SAFETY SWITCH . . . . . . . . . . . . . . . . . . . . .
5
CONTROLS OPERATION . . . . . . . . . . . . . . . . . .
I
Accessing Functions and Subfunctions. . . . . . . 5
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
S U M M A R Y D I S P L A Y . . . . . . . . . . . . . . . . . . . . .
5
.
STATUS FUNCTION . . . . . . . . . . . . . . . . . . . . . .
5
.
T E S T F U N C T I O N . . . . . . . . . . . . . . . . . . . . . . . .
10
Programming Functions . . . . . . . . . . . . . . . . . . . .
1
.
F U N C T I O N . . . . . . . . . . . . . . . . . . . .
11
l
SET POINT FUNCTION . . . . . . . . . . . . . . . . . .
l
SCHEDULE FUNCTION . . . . . . . . . . . . . . . . . .
11
TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . .
12-26
Checking Display Codes . . . . . . . . . . . . . . . . . . . .
1 2
l
OPERATING MODE CODES . . . . . . . . . . . . . .
1 2
.
A L A R M C O D E S . . . . . . . . . . . . . . . . . . . . . . . . .
12
Quick Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 4
Electronic Expansion Valves . . . . . . . . . . . . . . . .
1 9
l
CHECKOUT PROCEDURE . . . . . . . . . . . . . . .
19
l
EXV OPERATION . . . . . . . . . . . . . . . . . . . . . . . .
21
Thermistors
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 2
l
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 2
l
SENSOR REPLACEMENT . . . . . . . . . . . . . . . .
2 2
Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 3
Installation, start-up and servicing of this equipment
can be hazardous due to system pressures, electrical
components and equipment location.
Only trained, qualified installers and service mechanics
should install, start-up and service this equipment.
When working on the equipment, observe precautions
in the literature, tags, stickers and labels attached to the
equipment and any
safety precautions that apply.
l
Follow all safety codes.
Wear safety glasses and
gloves.
l
Use care in handling, rigging and setting bulky
equipment.
l
Use care in handling
components.
SHOCK
H A Z A R D .
Open all remote disconnects before
this equipment.
This unit uses a
electronic
control system.
not use jumpers or other tools
to short out components, bypass or otherwise depart
f r o m
p r o c e d u r e s . A n y
ground of the control
or accompanying wiring
may destroy the electronic modules or electrical
component.
FLOTRONIC PLUS CONTROL SYSTEM
G e n e r a l
T h e
F l o t r o n i c P l u s c h i l l e r s
feature microprocessor-based electronic controls and an
electronic expansion valve (EXV) in each refrigeration
circuit.
The Flotronic Plus control system cycles compressors
and compressor unloaders to maintain the selected leav-
ing water temperature set point. It automatically posi-
tions the EXV to maintain the specified refrigerant
superheat entering the cylinders of the compressor.
Safeties are continuously monitored to prevent the unit
from operating under unsafe conditions. A scheduling
function, programmed
by
the user, controls the unit
occupied/ unoccupied schedule. The control also operates
a Quick Test program that allows the operator to check
input and output signals to the microprocessor.
The control system consists of a processor module
(PSIO), low-voltage relay module (DSIO), electronic
expansion valve (EXV), EXV driver module (DSIO),
keyboard and display module (HSIO) and thermistors to
provide analog inputs to the microprocessor. The soft-
ware resides in the PSIO.
"Loading the manual" means you need to wait until the file loads and becomes available for online reading. Some manuals are very large, and the time they take to appear depends on your internet speed.
Other Manuals for Carrier HS070-160
Summary
Features The control panel is shown in Fig. 1.PROCESSOR MODULE This module contains the operating software and controls the operation of themachine. It continuously monitors information received from the various temperature thermistors and communi-cates with the relay module to increase or decrease ...
Table 3 Thermistors C O N T R O L S E Q U E N C E The control power (115-l-60 for units; 230-l-50 for 50-Hz units) must be supplied directly from a separatesource through a code-approved fused disconnect to the and terminals of unit power teminal block. NOTE: There is no switch or circuit breaker; o...
When the second or lag refrigeration circuit is started, the circuit will go through a lo-second unless the circuit has been operating in the 15 minutes prior tothis start. Upon load reduction, the control system will unload the unit in the reverse order of loading until the capacitynearly matches t...
