English
6/8
PCW420-650
4.5 Parameter management
4.5.1
Temperature setting (see fi g.1)
1. 1. Turn the main swicth (QS) to “ON” and wait for the temperature
visualization.
2. Press buttons “
P3
” and “
P5
” together, to enter into “
dIrE
” (D)
parameters.
3. Press button “
P4
” to select “
SEt
” parameter, press the button
“
P5
” to confi rm.
4. Change the value, using the up and down arrow buttons “
P3
” and
“
P4
”, then press button “
P5
” to confi rm.
6. Press the button “
P3
” to return on “
dIrE
”
parameter.
7. Press the button “
P5
” to exit.
4.5.2
Differential setting (see fi g.1)
1. Turn the main swicth (QS) to “ON” and wait for the temperature
visualization.
2. Press buttons “
P3
” e “
P5
” together, to enter into “
dIrE
” (D)
parameters.
3. Press button two times “
P4
” to select “
diF
” parameter, press the
button “
P5
” to confi rm.
4. Change the value, using the up and down arrow buttons “
P3
” and
“
P4
”, then press button “
P5
” to confi rm.
6. Press the button two times “
P3
” to return on “
dIrE
”
parameter.
7. Press the button “
P5
” to exit.
4.5.3
Visualization sensors B1,B2...
“B1” is the “set” sensor of the macchine.
1. Start the chiller.
2. Press the button “
P4
” to visualize the temperature of the next sen-
sor.
3. Press the button “
P5
” to visualize the sensors “
b01
” ..“
b02
”....
It is recommended to leave on the display the B1 “set” sensor.
4.6 Alarms management
4.6.1
Digital input alarms
ID
CODE
LED
DESCRIPTION
RESET
ID1
HPI
L5
High pressure alarm 1 from pres-
sure switch
M
ID2
LPI
L6
Low pressure alarm 1 from pres-
sure switch
M
ID3
tP
L7
Pump thermal cutout alarm
M
ID4
LL
L8
Water tank low water level alarm /
No water fl ow
A
ID6
PII
L9
Protection alarm compressor 1
/ Phases monitor
M
ID7
PI3
L9
Protection alarm compressor 3
/ Phases monitor
M
ID8
1AC1
-
Circuit 1 alarm available
M
ID6
HP2
L5
High pressure alarm 2 from pres-
sure switch
M
ID7
LP2
L6
Low pressure alarm 2 from pres-
sure switch
M
ID11
PI2
L9
Protection alarm compressor 2
/ Phases monitor
M
ID12
PI4
L9
Protection alarm compressor 4
/ Phases monitor
M
ID13
1AC2
-
Circuit 2 alarm available
M
4.6.2
Allarmi da ingressi analogici
AI
CODE
DESCRIPTION
RESET
B1
HAI
Tank water outlet water high tempera-
ture alarm
Warning
LAI
Tank water outlet water low tempera-
ture alarm
A
StI
Sensor open circuit or short circuit
M
B2
HA2
Evaporator water outlet water high
temperature alarm
Warning
LA2
Evporator water outlet water low tem-
perature alarm
A
St2
Sensor open circuit or short circuit
M
B3
HA3
High ambient temperature warning
Warning
LA3
Low ambient temperature warning
Warning
St3
Sensor open circuit or short circuit
M
B5
HA5
Water tank high temperature alarm
Warning
LA5
Water tank low temperature alarm
Warning
St5
Sensor open circuit or short circuit
M
B7
HA7
Evaporator water outlet water high
temperature alarm
Warning
LA7
Evporator water outlet water low tem-
perature alarm
A
St7
Sensor open circuit or short circuit
M
4.7 Automatic restart
In the event of a power failure, when power is restored the chiller will
assume theOn-Off statusheld at themoment the power was lost.
Summary of Contents for Hyperchill PCW420
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Page 37: ...Ap ndice Appendix Appendice Anexo DATE 14 02 2022 Rev 17 CODE 398H272297...
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