SMC Networks HECR Series Installation And Maintenance Manual

10 Troubleshooting Continued
Code
Description
Operation
status
Reason for alarm
setting
Cause / Measure
ERR12
Internal temp.
sensor
High temp.
failure
Stop
Internal temp. sensor
value exceeds the high
temp. cutoff
temperature.
Check the set value for high
temp. cutoff temperature and
confirm the temperature really
reaches this value.
Flow rate of circulating
fluid is zero.
If the flow rate of the circulating
fluid is zero, the temperature of
circulating fluid can’t be
detected and might increase.
Confirm the flow of circulating
fluid is not stopped by valves
etc.
ERR13
Internal
temp. sensor
Low temp.
failure
Stop
Internal temp. sensor
value is lower than low
temp. cutoff
temperature.
Check the set value for low temp.
cutoff temp. and confirm the
temperature really reaches this
value.
Flow rate of circulating
fluid is zero.
If the flow rate of the circulating
fluid is zero, the temperature of
circulating fluid can’t be
detected and might decrease.
Confirm the flow of circulating
fluid is not stopped by valves
etc.
ERR14
Thermostat
alarm
Stop
Facility water temp is
high.
Decrease facility water temp. and
increase a flow rate.
Flow rate is zero.
If flow rate of circulating fluid is
zero, the temperature of
circulating fluid cannot be
measured and the temperature
of heat exchanger may
increase. Ensure the circulating
fluid is allowed to flow.
The pump breaks.
ERR15
Abnormal
output alarm
Continue
Cooling or heating
capacity overload.
No temperature decrease when
100% cooling output.
No temperature increase when
100% heating output.
Volume of circulating
fluid is too large.
If the volume of circulating fluid
system is too large, the change
of temperature takes a long
time. In this case, change
overload judging time setting to
avoid this alarm. (Refer to 6.3.2)
ERR16
Low circulating
flow rate alarm
(Option)
Stop
The flow rate of the
circulating fluid is 1
L/min. or less
Investigate why the flow rate
of the circulating fluid is low
and take countermeasures.
ERR17
Internal
temp. sensor
disconnectio
n alarm
Stop
High level noise
entered the temp.
sensor line.
Check whether unstable
temperature is caused by
noise. Please consult SMC if it
is caused by noise.
ERR18
External
temp. sensor
disconnectio
n alarm
Continue
The external temp.
sensor is not
mounted.
For learning control or
external tune control, be sure
to mount the external temp.
sensor.
ERR19
Abnormal auto
tuning alarm
Stop
Capacity of
circulating fluid is too
large.
Adjust PID value (proportional
band, integral time and
derivative time) of setting
mode Level 2 by hand.
Overloaded during
auto tuning mode
Avoid overload.
ERR20
Low fluid
level alarm
Stop
Fluid level of tank is
not enough.
Refill tank with fluid.
Fluid is leaking.
Check all fluid connections
connected with the product.
Temperature rises and
falls +/-1 to 2 C
gradually about the set
point temperature.
-
Flow rate of
circulating fluid is
low.
Keep the flow rate 3L/min or
more.
-
PID parameters are
set incorrectly.
If the temperature cannot be
stable at default value,
perform auto tuning.
11 Declaration of Conformity
Below is a sample Declaration of Conformity(DoC) used for this product.
An actual DoC will be supplied with each product.
URL :
http// www.smcworld.com (Global) http// www.smceu.com (Europe)
Specifications are subject to change without prior notice from the manufacturer.
© 2017 SMC Corporation All Rights Reserved.

SMC Networks HECR Series Specifications

General

Brand	SMC Networks
Model	HECR Series
Category	Chiller
Language	English