Handleiding
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String in the alarm log:
± CxCmp1 OffCndPressHi
String in the alarm snapshot
CxCmp1 OffCndPressHi
Inlet air temperature of the condenser
is too high (A/C units).
The air temperature measured at the
inlet of the condenser may not exceed
the limit indicated in the operational
range (working envelope) of the
chiller.
Check the location where the unit is
installed and check that there are no
short circuit of the hot-air blown from
the fans of the same unit, or even from
fans of next chillers (Check IOM for
proper installation).
One or more condenser fan turning in
wrong direction (A/C units).
Check for correct phases sequence
(L1, L2, L3) in the electrical
connection of the fans.
Excessive charge of refrigerant into
the unit.
Check liquid sub-cooling and suction
super-heat to control indirectly the
correct charge of refrigerant.
If necessary, recover all the
refrigerant to weight the entire charge
and to control if the value is in line with
kg indication on unit label.
Condensing pressure transducer
could not operate properly.
Check for proper operation of the
high-pressure sensor.
Reset
Notes
Local HMI
Network
Auto
5.6.15 Low Pressure alarm
This alarm is generated in case the evaporating pressure drops below the Low Pressure Unload and the control is not able
to compensate to this condition.
Symptom
Cause
Solution
Circuit status is Off.
The compressor does not load
anymore or even unload, circuit is
stopped immediately.
Bell icon is moving on controller’s
display.
String in the alarm list:
CxCmp1 OffEvpPressLo
String in the alarm log:
± CxCmp1 OffEvpPressLo
String in the alarm snapshot
CxCmp1 OffEvpPressLo
Transitory condition like a fan staging
(A/C units).
Wait until the condition is recovered
by EXV control
Refrigerant charge is low.
Check sight glass on liquid line to see
if there is flash gas.
Measure sub-cooling to see if the
charge is correct.
Protection limits not set to fit customer
application.
Check the evaporator approach and
the corresponding water temperature
to evaluate the low pressure hold limit.
High Evaporator Approach.
Clean the evaporator
Check the quality of the fluid that flows
into heat exchanger.
Check the glycol percentage and type
(ethilenic or propilenic)
Water flow into water heat exchanger
is too low.
Increase the water flow.
Check that evaporator water pump is
operating correctly providing the
required water flow.
Evaporating pressure transducer is
not working properly.
Check the sensor for proper operation
and calibrate the readings with a
gauge.
EEXV is not working correctly.
It’s not opening enough or it’s moving
in the opposite direction.
Check if pump-down can be finished
for pressure limit reached;
Check expansion valve movements.
Check connection to the valve driver
on the wiring diagram.
Measure the resistance of each
winding, it has to be different from 0
Ohm.
Water temperature is low
Increase inlet water temperature.
Check the low-pressure safeties
settings.
Reset
A/C units
Notes
Bekijk gratis de handleiding van Daikin EWAH670TZXRB2, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | EWAH670TZXRB2 |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 11657 MB |
