SMC Networks HRS012-A-10 Series User Manual

HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
HRS Series 3.3 Troubleshooting
3-107
AL27: Compressor intake pressure sensor failure
<Detection method> This alarm goes off when the pressure detected by the refrigerant circuit
pressure sensor (for low pressure) is out of the -0.20 to 3.0 MPa range.
Compressor intake pressure
sensor failure
AL27
1.
Check the connection.
Check for the correct
connections.
Error
Normal
Error
Error
2.
Check for an input
to the pressure sensor used
in the refrigerant
circuit.
Normal
Normal
3.
Check the output
of the refrigerant circuit
pressure sensor.
Replace the main board.
See section "4.5.16
Replacement of main board
& communication board".
See document No. HRX-MM-
S029 for replacement.
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.

SMC Networks HRS012-A-10 Series Specifications

General

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