SMC Networks HRS012-A-10 Series Service Manual page 37

11.
Normal
Check the pressure
sensor in the refrigerant
circuit.
Error
14.
Check for an input to the
pressure sensor in the
refrigerant circuit.
Normal
15.
Check the display
of the pressure sensor (for
high pressure) in the
refrigerant circuit.
Normal
16.
Check the display
of the pressure sensor (for
low pressure) in the
refrigerant circuit.
Normal
Go back to "12. Check if the
coolant leaks".
HRS Series
12.
Check if the coolant leaks.
No leakage
13.
After stopping the
power supply, does the same
alarm goes off again when the
chiller is restarted?
Y
Please contact SMC or distributor.
Error
17.
Error
Check the analogue
output of the the pressure sensor
(for high pressure) in the
refrigerant circuit.
Normal
Refrigerant circuit pressure sensor (for
high pressure), which is a part of the
refrigerant circuit, needs to be
replaced. Only a specialized operator
is allowed to handle the refrigerant
circuit.
See document No. HRX-MM-S029 for
replacement.
18.
Error Check the analogue
output of the the pressure sensor
(for low pressure) in the
refrigerant circuit.
Normal
Refrigerant circuit pressure sensor (for
low pressure), which is a part of the
refrigerant circuit, needs to be
replaced. Only a specialized operator
is allowed to handle the refrigerant
circuit.
See document No. HRX-MM-S029 for
replacement.
Chapter 3 Alarm Indication and Troubleshooting
With
Repair the refrigerant circuit.
leakage
Only a specialized operator is
allowed to handle the refrigerant
circuit.
Electronic expansion valve,
which is a part of the refrigerant
circuit, needs to be replaced.
N Only a specialized operator is
allowed to handle the refrigerant
circuit.
See document No. HRX-MM-
Q016 for replacement.
Error
Replace the main board.
See section "4.5.16
Replacement of main board
& communication board".
Error
HRX-MM-N007
3.3 Troubleshooting
3-21