Envicool EMW90HDNC1A - Page 38

User Manual
7 Fault Management
36
EMW90HDNC1A Air-cooled Chiller
Alarm Name
Generation
Condition
Possible Causes
Processing Method
Outlet Water
Temp Sensor
Failure
The temperature
sensor can not detect
the outlet coolant
temperature in real
time.
The electric control wiring
of the temperature sensor
is loose and the cable is
damaged.
Tighten the electrical control
wiring or replace the cable.
Temperature sensor is
damaged.
Replace the temperature
sensor.
Inlet Water
Temp Sensor
Failure
The temperature
sensor cannot detect
the inlet coolant
temperature in real
time.
The electric control wiring
of the temperature sensor
is loose and the cable is
damaged.
Tighten the electrical control
wiring or replace the cable.
Temperature sensor is
damaged.
Replace the temperature
sensor.
Suction Temp
Sensor
Failure
The temperature
sensor cannot detect
the suction
temperature in real
time.
The electric control wiring
of the temperature sensor
is loose and the cable is
damaged.
Tighten the electrical control
wiring or replace the cable.
Temperature sensor is
damaged.
Replace the temperature
sensor.
Low Pressure
Sensor
Failure
Low pressure sensor
can not detect
pressure normally.
The electric control wiring
of the low-pressure
sensor is loose or the
cable is damaged.
Tighten the electrical control
wiring or replace the cable.
Low pressure sensor is
damaged.
Replace the low pressure
sensor.
Condensation
Temp Senor
Failure
Temperature sensor
can not detect
condensing
temperature in real
time.
The electric control wiring
of the temperature sensor
is loose and the cable is
damaged.
Tighten the electrical control
wiring or replace the cable.
Temperature sensor is
damaged.
Replace the temperature
sensor.
High
Pressure
Sensor
Failure
High pressure sensor
can not detect
pressure normally.
The electric control wiring
of the low-pressure
sensor is loose or the
cable is damaged.
Tighten the electrical control
wiring or replace the cable.
Low pressure sensor is
damaged.
Replace the high pressure
sensor.
Exhaust
Temp Sensor
Failure
Temperature sensor
can not detect
discharge
temperature in real
time.
The electric control wiring
of the temperature sensor
is loose and the cable is
damaged.
Tighten the electrical control
wiring or replace the cable.
Temperature sensor is
damaged.
Replace the temperature
sensor.
Low Press
Difference of
Water Pump
The pressure
difference between
inlet and outlet coolant
is less than the alarm
The electric control wiring
of circulation pump is
loose or the cable is
damaged.
Tighten the electrical control
wiring or replace the cable.