Airwell DLF 18 DCI, Техническое руководство

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13-9
TROUBLESHOOTING
SM DL
F 1
-A.1 GB
No
Fault Name Fault Description Corrective Action
19
PFC Current sensor Driver fault Replace Compressor Driver
Missing phase
Installation incorrect
Check power supply lines
Phase order mismatch Switch between 2 supply lines
PFC Trip (Overload) Protection of driver
Can occur during high current conditions.
If problem persists,
Check power supply to driver.
Check driver communication ( 13.5.16).
Check no obstruction to electrical box and
outdoor coil air inlet.
20 Heat sink Over Heating
Compressor stopped due to
heat sink protection
% <=
free and the fan is running free
Check the screws connecting the driver to
heat sink are tighten
Check outdoor fan motors.
(13.5.9)
21 Deicing During deicing procedure
Normally no action is required
If the problem persists for more than twice
on each hour, check for refrigerant leak
and thermodynamic operation
(13.3)
22 Compressor Over Heating
Compressor stopped due to
over heat protection
Normally no action is required
If the problem persists for more than twice
on each hour, check for refrigerant leak
and thermodynamic operation
(13.3)
23 Compressor Over Current
Compressor stopped due to
over current protection
Normally no action is required
If the problem persists for more than twice
on each hour, check for refrigerant leak or
clog and thermodynamic operation
(13.3)
24
No OFAN Feedback
(Both OFAN_UP or
OFAN_DN)
Outdoor fan(s) does not
rotate
Check no obstruction to outdoor unit coil
air path
Check OFAN motor
(13.5.9)
25
OFAN IPM fault / OFAN
IPM Driver Pin
Not available -
26 Compressor Lock Compressor does not rotate
Check Compressor
(13.5.10)
Check driver
(13.5.5)
27 Indoor Coil defrost
Indoor coil is freezing -
protection
Normally no action is required
If the problem persists for more than twice
on each hour.
Check refrigerant leakage – add refrigerant
if required according pressure charts on
section
5
.
Check ICT sensor – replace if required
Check IFAN motor and capacitor
(13.5.19)
28 Abnormal
Compressor cannot start
properly. Reset power and check again after 5 min.
If happens again, replace driver.
29 Indoor Sensor fault
Thermistor not connected or
damaged
Check Thermistor ( 13.5.13)
30
Outdoor/Indoor Coil
Overheating Compressor stopped due to
over pressure protection
Normally no action is required
If the problem persists for more than twice
on each hour, check for refrigerant clog
and thermodynamic operation
(13.3)