KKT chillers vBoxX 10, Instruction Manual

Page: 75 / 82

75 / 82 83000602.Ke
632
DI Error fan Internal monitoring of the
fan has tripped. Motor is running in two
phases only, rotational
direction,
poor contact at terminal
connections,
interturn short-circuit,
earth fault, rotor blocked. Check the motor power
consumption, check
the electrical
connection of the
components, check for
mechanical blocking,
641
643 DI mpcb cont.heater
DI mpcb cont.heater2 Circuit breaker has tripped. Current above the
allowable range,
poor contact at terminal
connections due to dirt or
corrosion,
short-circuit between the
heating elements, earth
fault.
Check the electrical
connection to the
components, test for
short to earth
811 uPC DI ext.release internal release of the
"Evolution" controller unit is
not applied at the "uPC"
control module faulty contact Check contact 4N1
and control relay 7Q1
821 AI uPC high press. Output value of the sensor
is incorrect Sensor short-circuit or
sensor break Use the characteristic
curve to check the
electrical connection of
the sensor
822 AI uPC low press. Output value of the sensor
is incorrect Sensor short-circuit or
sensor break Use the characteristic
curve to check the
electrical connection of
the sensor
823 AI uPC suct.gastemp. Output value of the sensor
is incorrect Sensor short-circuit or
sensor break Use the characteristic
curve to check the
electrical connection of
the sensor
824 AI uPC hot gas temp. Output value of the sensor
is incorrect Sensor short-circuit or
sensor break Use the characteristic
curve to check the
electrical connection of
the sensor
829 AI uPC controli. B7 Output value of the sensor
is incorrect Sensor short-circuit or
sensor break Use the characteristic
curve to check the
electrical connection of
the sensor
831 uPC high-press. max Condensation pressure is
outside the allowable range. Unable to remove the
waste heat of the
refrigeration circuit. Clean the condenser
and filter. Check the
function of the fan.
Check the cooling
water circuit. Install the
cover panels. Press the
Reset button and
acknowledge at the
display.
832 uPC low-press. min Low pressure sensor has
tripped. Pressure has fallen
below the minimum
allowable pressure on the
intake side of the
compressor (low pressure
side). Liquid flow through the
evaporator is too low.
Refrigerant loss. Faulty
function of the expansion
valve. Faulty function of
the LP sensor. Check liquid flow.
Check the function of
the expansion valve.