SMC Networks HRSH090-A Operation Manual page 153

Code Alarm name
AL01 Low level in tank
High circulating
AL02
discharge temp.
Circulating
AL03
discharge temp. rise
Circulating
AL04
discharge temp. drop
High circulating
AL05
return temp.
High circulating
AL06
discharge pressure
Abnormal
AL07
operation
Circulating
AL08
discharge pressure rise
Circulating
AL09 discharge
drop
High
AL10
suction temp.
Low
AL11
suction temp.
Low super
AL12
temperature
High
AL13
discharge pressure
Refrigerant
AL15 pressure (high pressure
side) drop
Refrigerant
AL16 pressure (low pressure
side) rise
Refrigerant
AL17 pressure (low pressure
side) drop
HRSH Series
Table 7-1 Alarm code list and Troubleshooting (1/3)
Alarm
operation
(default
setting)
A.RUN
fluid
A.STP
fluid
A.RUN
fluid
A.RUN
fluid
A.STP
fluid
A.STP
pump
A.STP
fluid
A.RUN
fluid
pressure A.RUN
compressor
P.RUN
compressor
P.RUN
heat
P.RUN
compressor
P.RUN
circuit
P.RUN
circuit
P.RUN
circuit
P.RUN
Chapter 7 Alarm indication and trouble shooting
Cause / Remedy
(Press the reset key after eliminating the
cause.)
The fluid level of the level indicator has fallen.
Fill the circulating fluid.
･Check that the ambient temperature, facility
water specifications and heat load are within
the specified ranges.
･Wait until the circulating fluid temperature
lowers.
Check that the
temperature is within the specified range.
･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.
Check that there is no bend, collapse and
clog on/in the external piping.
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.
Restart 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 returned
temperature.
･ Check that the heat load is within the
specified range.
･Check that the circulating fluid flows.
･Use 15% ethylene glycol aqueous solution
with the set temperature lower than 10 deg.
C.
Check that the ambient temperature, facility
water specifications and heat load are within
the specified ranges.
Malfunction of the
occurred.
Ask for the service.
Check that the ambient temperature, facility
water specifications and heat load are within
the specified ranges.
Check that the circulating fluid flows higher
than the minimum operating flow rate..
HRX-OM-R026
filled circulating fluid
circulating fluid
refrigeration circuit
7.3 Troubleshooting
7-5