SMC Networks HRSH Series User Manual

HRX-OM-Q026
Chapter 6 Alarm Notification and Troubleshooting
HRSH Series 6.3 Troubleshooting
6-5
Table 6-1 Alarm codes and troubleshooting (1/3)
Alarm
code
Alarm name
Operation
status
(Default)
Cause/Countermeasure
(Press the reset key after eliminating the
cause.)
AL01
Low level in tank
A.STP
Fluid level shown by the fluid level meter has
fallen. Supply or add circulating fluid.
AL02
High circulating fluid
discharge temp.
A.STP
･ - 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 to be
appropriate.
･Wait until the circulating fluid temperature
goes down.
AL03
Circulating fluid discharge
temp. rise
A.RUN
AL04
Circulating fluid discharge
temp. drop
A.RUN
･Check that the circulating fluid temperature
supplied to the tank is within the specified
range.
･Change the set value of to be
appropriate.
AL05
High circulating fluid return
temp.
A.STP
･Check that the circulating fluid flows.
･Check that the heat load is within the
specified range.
AL08
Circulating fluid discharge
pressure rise
A.STP
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..
AL09
Circulating fluid discharge
pressure drop
A.STP
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.
AL10
High compressor intake temp.
P.RUN
･Check the circulating fluid temperature
returning to the thermo-chiller.
･Check that the heat load is within the
specified range.
AL11
Low compressor intake temp.
P.RUN
･Check that the circulating fluid flows.
･ Use a 15% ethylene glycol aqueous solution
when operating with a set temperature lower
than 10
o
C.
AL12
Low super heat temp.
P.RUN
AL13
High compressor discharge
pressure
P.RUN
Check that the ambient temperature, facility
water, and heat load satisfy the specifications.
AL15
Refrigerant circuit pressure
(high pressure side) drop
P.RUN
Refrigerant circuit failed.
Ask for service for the refrigerant circuit.
AL16
Refrigerant circuit pressure
(low pressure side) rise
P.RUN
Check that the ambient temperature, facility
water, and heat load satisfy the specifications.
AL17
Refrigerant circuit pressure
(low pressure side) drop
P.RUN
・Check that the circulating fluid flows.
･It is possible that refrigerant is leaking. Ask for
the service.
AL18
Compressor running failure
P.RUN
Leave it for 10 minutes, and then restart the
thermo-chiller. Check if the pump operates.
AL19
Communication error
OFF
Try to send the request message again.

SMC Networks HRSH Series Specifications

General

Brand	SMC Networks
Model	HRSH Series
Category	Chiller
Language	English