SMC Networks HRS100-A?-20-? Operation Manual page 157

Code Alarm name
AL01
Low level in tank
High circulating
AL02
discharge temp.
Circulating fluid discharge
AL03
temp. rise
Circulating fluid discharge
AL04
temp. drop
High circulating fluid return
AL05
temp.
High circulating fluid
AL06
discharge pressure
Abnormal pump
AL07
operation
Circulating fluid discharge
AL08
pressure rise
Circulating fluid discharge
AL09
pressure drop
High compressor suction
AL10
temp.
Low compressor
AL11
temp.
Low super
AL12
temperature
High compressor discharge
AL13
pressure
Refrigerant circuit pressure
AL15
(high pressure side) drop
Refrigerant circuit pressure
AL16
(low pressure side) rise
Refrigerant circuit pressure
AL17
(low pressure side) drop
HRS Series
Table 6-1 Alarm codes and troubleshooting (1/3)
Alarm
operation
(default
setting)
A.RUN
fluid
A.STP
A.RUN
A.RUN
A.STP
A.STP
A.STP
A.STP
A.STP
P.RUN
suction
P.RUN
heat
P.RUN
P.RUN
P.RUN
P.RUN
P.RUN
Chapter 6 Alarm Notification and Troubleshooting
Cause / Remedy
(Press the reset key after eliminating the
Fluid level shown by the fluid level meter has
fallen. Supply or add circulating fluid.
･Check that the ambient temperature, facility
water, and heat load satisfy the specifications, and
that the circulating fluid flow rate is more than the
minimum flow rate.
･Circulating fluid flow rate can be checked with the
check "monitor menu.
･Change the set value of AS.04 to be appropriate.
･Wait until the circulating fluid temperature goes
down.
･Check that the circulating fluid temperature
supplied to the tank is within the specified range.
･Change the set value of AS.06 to be appropriate.
･Check that the circulating fluid flows.
･Check that the heat load is within the specified
range.
Check that there is no bend, collapse and
clog on/in the external piping.
The pump does not operate. Check that the
pump thermal operation switch is operated. Refer
to [6.3.3 How to release the pump thermal trip].
Check that there is no bending, collapse, or
clogging with the external piping.
"EEEE" shown on the PI display in the check
monitor menu indicates shirt-circuit or broken wire
of the pressure sensor in the circulating fluid
circuit. Ask for the service for the pressure sensor..
Restart the thermo-chiller and check if the pump
runs.
In case of displaying EEEE on the PI display of the
main display and check monitor menu, the
pressure sensor of the circulating fluid circuit has a
malfunction. Ask the service.
･Check the circulating fluid temperature returning
to the thermo-chiller.
･Check that the heat load is within the specified
range.
･Check that the circulating fluid flows.
･ Use a 15% ethylene glycol aqueous solution
when operating with a set temperature lower than
o
10 C.
Check that the ambient temperature, facility water,
and heat load satisfy the specifications.
Refrigerant circuit failed.
Ask for service for the refrigerant circuit.
Check that the ambient temperature, facility water,
and heat load satisfy the specifications.
Check that the circulating fluid flows.
HRX-OM-S004
cause.)
6.3 Troubleshooting
6-5