Cooper & Hunter GRS-Cm18/A-M, Руководство по обслуживанию

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AIR COOLED SCROLL CHILLER MAINTENANCE
30
Code Error name Source Control logic
Failure of wired
controller
No.1. If the wired controller can not detect No.1 unit in 1min,
the error code will be displayed. When No.1 unit is connected
rightly, the error code will disappear and the communication
will be normal.
Ec
Water flow
switch protection
-
only available
in circulating
type
.
Water flow
switch
Water flow switch protection is to prevent high pressure of
Freon system caused by low pressure of inflow water and low
water flow. When the water flow switch disconnects, the unit
will stop and water replenishing valve will close. Waterway
pressure switch can resume automatically. The unit can start
running when the running condition is reached. Press reset
button to remove the error.
Ed
System high
temperature
protection
-
only available
in circulating
type
.
Outflow water
temperature
sensor
When the compressor is running, and the outflow water
temperature > 60
*
, turn off all the loads immediately. When
outflow water temperature <55
*
, the high temperature
protection will be cancelled. The unit will operate according to
the original running state.
F3
Outdoor ambient
temperature
sensor
malfunction
Outdoor
ambient
temperature
sensor
Outdoor ambient temperature sensor is used to control
defrosting and startup condition. If short circuit or break circuit
occurs to the outdoor temperature sensor, the unit will display
error code and close all loads. The unit will resume running
automatically.
F4
Discharge
temperature
sensor
malfunction
Discharge
temperature
sensor
Discharge temperature sensor is used to prevent the unit from
damage caused by compressor oil decomposition and
carbonization due to high discharge temperature. If short circuit
or break circuit occurs to the discharge temperature sensor, the
unit will display error code and close all loads. The unit will
resume running automatically.
F5
Outdoor inlet
pipe temperature
sensor
malfunction
Outdoor inlet
pipe
temperature
sensor
For the sake of timely defrosting in winter, outdoor inlet pipe
temperature sensor is used for detecting defrosting condition. If
short circuit or break circuit occurs to the outdoor inlet pipe
temperature sensor, the unit will display error code and close
all loads. The unit will resume running automatically.
F7
Outdoor outlet
pipe temperature
sensor
malfunction
Outdoor outlet
pipe
temperature
sensor
Outdoor outlet pipe temperature sensor is used for judging
condition of stopping defrosting. If short circuit or break circuit
occurs to the outdoor outlet pipe temperature sensor, the unit
will display error code and close all loads. The unit will resume
running automatically.
F8
Inflow water
temperature
sensor
malfunction
Inflow water
temperature
sensor
Inflow water temperature sensor is mainly used for controlling
opening of water replenishing valve. When inflow water
temperature sensor is wrong, the unit will still operate but
display error code. Press remove button to remove the error.
F9 Outflow water Outflow water Outflow water temperature sensor is mainly used for