Airwell DLF 18 DCI, Technical Manual

Page: 72 / 102

13-3
TROUBLESHOOTING
SM DL
F 1
-A.1 GB
No.
SYMPTOM /
PROBLEM
PROBABLE
CAUSE
CORRECTIVE ACTION
8.
One indoor unit or more
are operating in cool
mode with no capacity,
and the other units have
water leaks/freezing
problems
The
communication
wires of the
indoor units are
switched
Check and correct the communication wires
connection
9.
One indoor or more are
operating in heat mode
with a limited capacity,
and the coil on the other
units are very hot.
Outdoor unit
10.
Outdoor unit display
board and LEDs are off
No power supply
Check supply voltage to main terminals L and N
with volt meter.
Miss-wiring
Check all supply wiring to controller and terminals
according to wiring diagram
Loose connection Check all power wiring connections
Burnt fuse Check fuse on the main board
(13.5.8)
If still not OK Replace main board
(14.1.13)
11.
Compressor does not
start operation
One or some
components are
not operating well
Check for any fault code shown on display board
and act accordingly
Electronics
control problem or
protection
PFC Chock coil Check the PFC Chock coil
(13.5.6)
Driver failure
Check if fault code # is shown on display board.
(13.5.5)
or
replace driver
If still not OK Replace compressor