Airwell DLF 18 DCI, Техническое руководство

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13-5
TROUBLESHOOTING
SM DL
F 1
-A.1 GB
No.
SYMPTOM /
PROBLEM
PROBABLE
CAUSE
CORRECTIVE ACTION
15.
Compressor stops many
times during operation
Check all according to above problem
HP Switch
Check if HPS fault code (#8) is accruing
frequently. If so, check the switch operation
( 13.5.14)
LP Switch
Check if LPS fault code (#9) is accruing
frequently. If so, check the switch operation
( 13.5.15)
16.
Not all units are
operating Communication
problems Check the communication between outdoor and
indoor units
( 13.5.17)
17.
Unit is cooling while in
heat mode
RV problem Check RV operation
(13.5.11)
IDU-ODU
communication Check the communication between outdoor and
indoor units
( 13.5.17)
18.
Compressor is
generating abnormal
noise
Phase order to
compressor is
wrong
Check compressor phase order
Compressor
internal parts
wearing
Replace compressor
Vibration
Check all piping connections
Check all screws on unit metal chassis are
tightened
Check that no piping is in contact with each other
or with other parts.
19.
Freezing of outdoor unit
coil in heat mode and
outdoor unit base is
blocked with ice
Hard conditions of
low temperatures
and high humidity
Check that no obstructions to outdoor unit coil air
inlet.
Check that all holes in bottom of outdoor unit base
are open and clean from dirt.
Check OCT and OAT thermistors
Connect base heater
20.
The unit stop suddenly
during operation
EMC interference
to the A/C unit
Check for EMC problems
(13.5.20.1)
21.
Indoor unit Indicator leds
%
22.
Other home appliances
operation is faulty such
as noise appears in the
television picture, or the
picture is distorted or
static occurs in the radio
sound
EMC interference
by the A/C unit
Check for EMC problems
(13.5.20.1)
23. All others
&
of indoor or
outdoor units
Check for any fault code shown on display board
and act accordingly