S&A CWFL-800 - Flow Alarm and Output Ports; Alarm Output Ports and Wiring Diagram; Alarm Causes and Working Status

CWFL-800/1000/1500 Series
10
<6> Flow alarm and output ports
In order to guarantee the equipment will not be damaged while cooling water
circulation is out of control, CWFL-800/CWFL-1000 dual temperature series
chiller possesses a low flow alarm protection.
(1) Flow alarm output ports and the wiring diagram
2. Alarm causes and working status table.
Note: The flow alarm is connected to the normally open relay and normally closed
relay contacts, requiring operating current less than 5A, working voltage less than
300V.
Display
Condition
Alarm
code
Buzzer
OUT
H1、H2
OUT
H1、H3
Circulating pump works
properly
DISCONNECTI
ON
BREAKOVER
Blocked cooling water
circulation loop
E6
Sounds
BREAKOVER
DISCONNECTION
Alarm of water shortage
E6
Sounds
BREAKOVER
DISCONNECTION
Faulted circulating pump
E6
Sounds
BREAKOVER
DISCONNECTION
Ultrahigh room temp
E1
Sounds
BREAKOVER
DISCONNECTION
Ultrahigh water temp
E2
Sounds
BREAKOVER
DISCONNECTION
Ultralow water temp
E3
Sounds
BREAKOVER
DISCONNECTION
Faulted room temp sensor
（constant temp invalid）
E4
Sounds
BREAKOVER
DISCONNECTION
Faulted water temp sensor
E5
Sounds
BREAKOVER
DISCONNECTION
Chiller power failure
BREAKOVER
DISCONNECTION