SMC Networks HRS012-A-10 Series - Page 81

HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
HRS Series 3.3 Troubleshooting
3-65
13.
Check the analogue
output of the the pressure sensor
(for high pressure) in the
refrigerant circuit.
11.
Check the display
of the pressure sensor (for
high pressure) used in the
refrigerant circuit.
Error
Error
Normal
Error
8.
Check the pressure
sensor in the refrigerant
circuit.
To the previous page
Go to step "9. After stopping the
power supply, the same alarm
goes off again when the chiller is
restarted."
10.
Check for an input to the
pressure sensor used in the
refrigerant circuit.
Normal
Error
Normal
Normal
14.
Check the analogue
output of the the pressure sensor
(for low pressure) in the
refrigerant circuit.
12.
Check the display
of the pressure sensor (for low
pressure) used in the
refrigerant circuit.
Error
Error
Normal
To the previous page
Go to step "9. After stopping the
power supply, the same alarm
goes off again when the chiller is
restarted."
Normal
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.
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".
1. Check the facility water system.
Check that the facility water system satisfies the required facility water flow rate that is specified in
the Operation Manual.
2. Facility water is contaminated.
Check that the facility water is clean (without any foreign matter or discolouration).