SMC Networks HRS012-A-10 Series User Manual

HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
HRS Series 3.3 Troubleshooting
3-71
AL15: Refrigerant circuit pressure (high pressure side) drop
<Detection method> This alarm goes off when the pressure detected by the refrigerant circuit pressure
sensor (for high pressure) is 0.1 MPa or less.
Is AL26 being generated?
Y
N
1.
Check the pressure
sensor in the refrigerant
circuit.
2.
Check if there is
refrigerant leakage.
Leakage
Repair the refrigerant circuit.
Only a specialized operator is
allowed to handle the
refrigerant circuit.
No leakage
Normal
Error
Refer to the section "AL26:
Compressor discharge
pressure sensor failure".
Please contact SMC or a
distributor.
5.
Check the analogue
output of the pressure sensor
(for high pressure) in the
refrigerant circuit.
4.
Check the display of the
pressure sensor (for high pressure)
used in the refrigerant
circuit.
Error
Error
Normal
Error
3.
Check for an input to the
pressure sensor uised in the
refrigerant circuit.
Normal
Normal
Refrigerant circuit pressure
(high pressure side) drop
AL15
See document No. HRX-MM-
S029 for replacement.
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.
Replace the main board.
See section "4.5.16
Replacement of main board
& communication board".

SMC Networks HRS012-A-10 Series Specifications

General

Brand	SMC Networks
Model	HRS012-A-10 Series
Category	Chiller
Language	English