S&A CWFL-2000 - VI. Alarm & Output Terminal; Alarm Output Terminals and Wiring Diagram; Alarm Causes and Working Status

TY-JS-211220-009
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VI. Alarm & Output Terminal
In order to guarantee the equipment will not be affected while abnormal situation
happens to the chillers, the chillers are designed with alarm protection function.
1. Alarm output terminals and wiring diagram.
2.Alarm causes and working status table.
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.
Display
Condition
Alarm
code
Buzzer
OUT H1、H2
OUT H1、H3
Circulating pump works
properly
DISCONNECTION
BREAKOVER
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
Alarm of water shortage
E6
Sounds
BREAKOVER
DISCONNECTION
Low flow rate /
water flow alarm
E6/E7
Sounds
BREAKOVER
DISCONNECTION
Faulted circulating pump
E7
Sounds
BREAKOVER
DISCONNECTION
Chiller power failure
BREAKOVER
DISCONNECTION