SMC Networks HRS012-A-10 Series Service Manual page 28

HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
10.
Check the pressure
sensor in the refrigerant
circuit.
13.
Check for an input from
the pressure sensor in the
refrigerant circuit.
14.
Check the display of the
pressure sensor (for high ressure)
in the refrigerant
circuit.
15.
Check the display
of the pressure sensor
(for low pressure) in the
refrigerant circuit.
Go back to "11. Check if
refrigerant leakage"on the
previous page.
3.3 Troubleshooting
3-12
To the previous page
Normal
Go back to "11. Check if the
coolant leaks".
Error
Error
Normal
Error
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.
Error
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.
16.
Check the analogue
Error
output of the the pressure sensor
(for high pressure) in the
refrigerant circuit.
Normal
17.
Check the analogue
Error
output of the the pressure sensor
(for low pressure) in the
refrigerant circuit.
Normal
Replace the main board.
See section "4.5.16
Replacement of main
board & communication
board".
HRS Series