Maintenance - S&A CW-5300 Installation & Operation Instructions

2. Alarm causes and working status table.
Display
Condition
Circulating pump works
properly
Ultra-high room temp
Ultra-high water temp
Ultra-low water temp
Room temp sensor failure
（constant temp invalid）
Water temp sensor failure
Alarm of water shortage
Low flow rate /
water flow alarm
Circulating pump failure
Chiller power failure
Note: The alarm output port is connected with a set of normally open and normally closed contacts
of the relay inside the machine. The working current should be smaller than 3A while the working
voltage should be smaller 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 without the dust filter, except for a quick cleaning process.)
Alarm
Buzzer
code
E1 Sounds
E2 Sounds
Sounds
E3
Sounds
E4
E5 Sounds
E6 Sounds
Sounds
E6/E7
Sounds
E7
14
TY-JS-20319-003
H1 and H2 H1 and H3
open circuit connected
connected open circuit
connected open circuit
connected open circuit
connected open circuit
connected open circuit
connected open circuit
connected open circuit
connected open circuit
connected open circuit