SMC Networks HRS100-A?-20-? Operation Manual page 158

HRX-OM-S004
Chapter 6 Alarm Notification and Troubleshooting
Code Alarm name
Compressor
AL18
failure
AL19 Communication error
AL20 Memory error
AL21 DC line fuse cut
Circulating
AL22 discharge temp. sensor
failure
Circulating fluid return
AL23
temp. sensor failure
Compressor
AL24
temp. sensor failure
Circulating
AL25 discharge
sensor failure
Compressor
AL26
pressure sensor failure
Compressor
AL27
pressure sensor failure
AL28 Pump maintenance
AL29 Fan maintenance
Compressor
AL30
maintenance
Contact input 1 signal
AL31
detection
Contact input 2 signal
AL32
detection
Compressor
AL37
temp. sensor failure
Compressor
AL38
temp. rise
Dust-proof
AL40 ∗1
maintenance
*1: Water-cooled type model does not generate this alarm.
6.3 Troubleshooting
6-6
Table 6-2 Alarm codes and troubleshooting (2/3)
Alarm
operation*1
(Default
setting)
running
P.RUN
OFF
A.STP
A.STP
fluid
A.STP
A.STP
suction
P.RUN
fluid
pressure A.STP
discharge
P.RUN
suction
P.RUN
OFF
OFF
OFF
A.STP
A.STP
discharge
P.RUN
discharge
P.RUN
filter
OFF
Cause / Remedy
(Press the reset key after eliminating the
cause.)
Leave it for 10 minutes, and then restart the
thermo-chiller. Check if the pump operates.
Try to send the request message again.
Controller failure.
Ask for service for the controller.
Fuse for the power supply output of the contact
input/output connector has blown.
･Ask for service for the fuse of the output voltage
circuit.
･Check that there is no incorrect wiring and the
current load is within the specified range.
Short-circuit or broken wire of the temperature
sensor.
Ask for service for the temperature sensor.
Short-circuit or broken wire of the pressure sensor
of the circulating fluid circuit. EEEE is displayed on
the PI display of the main display and check
monitor display.
Ask for service for the pressure sensor.
Short-circuit or broken wire of the pressure sensor
of the refrigerant circuit. Ask for service for the
pressure sensor.
Notices of the periodical
maintenances.
Ask for services of the pump, fan
and/or compressor.
Reset the operation cumulated
time for each alarm with the
menu SE.15, SE.16 or SE.17
after having the service.
Contact input has been detected.
Short-circuit or broken wire of the temperature
sensor. Ask for service for the temperature sensor.
Check that the ambient temperature, facility water,
and heat load satisfy the specifications.
Notice of the periodical
maintenance.
Clean the dust-proof filter. Reset
the operation cumulated time for
the alarm with the menu SE.30
after cleaning the filter. This
alarm can be OFF with the menu
AS.29.
Every 20,000
hours
Every 30,000
ours
Every 30,000
hours
1 to 9999
hours
(AS.31)
HRS Series