S&A CW-5000 - Alarm Causes and Working Status Table; Maintenance

TY-JS-220308-004
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2.Alarm causes and working status table
Display
Condition
Alarm
code
Buzzer
H1 and H2
H1 and H3
Circulating pump works properly
open circuit
connected
Ultra-high room temp
E1
sounds
connected
open circuit
Ultra-high water temp
E2
sounds
connected
open circuit
Ultra-low water temp
E3
sounds
connected
open circuit
Room temp sensor failure
E4
sounds
connected
open circuit
Water temp sensor failure
E5
sounds
connected
open circuit
Flow rate 1 alarm
E6
sounds
connected
open circuit
Flow rate 2 alarm
E7
sounds
connected
open circuit
Chiller power supply interruption
connected
open circuit
Note: the alarm output port is connected with a set of normally open or normally closed contactsof
the relay inside the machine. The working current is required to be less than 3A while the
working voltage is less than 300V.
VII. Maintenance
For equipment maintenance, firstly the machine must be stopped and the power must be
cut off. Wait 3 minutes before starting the maintenance process, otherwise there will be a
risk of electric shock. When the ambient temperature is lower than 2°C, the internal water
must be drained when the machine is shut down for a long time.
Disassemble the dust filter regularly for cleaning and use a compressed air gun to blow off
the dust accumulated in the condenser. (It is recommended to clean it once a week, and the
chiller should not work without the dust filter, except for a very quick cleaning process.)