Airwell DLS 43 DCI, Service Manual

Page: 131 / 182

13-14
TROUBLESHOOTING
SM DLSDCI 3-A.1 GB
13.5.4.3. YBD036-H11
I n normal operation the red led in ON continuously and green led is blinking slow (1 time/sec).
Even is that case, there can still be a Hardware problem that prevents the system to perform well
or at all. If no other problem is found, replace the driver.
1) In case green and/or red leds are OFF (one or both):
x
Check power supply to driver connected well and no burn marks on wiring.
x
PFC chock is connected well. Correct if needed.
x
Check PFC Chock (13.5.6). Replace chock if needed.
x
& @};[' @ %
x
Check fuse on driver (3.15A). In case fuse is burnt, replace driver.
If all is well but still leds are OFF, Replace driver.
Replacing Driver –
(14.1.15).
13.5.4.4 YAD036/042/060-H13
In normal operation the red and orange leds are ON
continuously and green led is blinking.
Even in that case, there can still be a Hardware problem
that prevents the system to perform well or at all. If no other
problem is found, replace the driver.
1.
Check power supply to driver board: L,N,CAP+, CAP_
GND.
2.
Red led (Low Voltage) should be ON. If not, check
!
3.
Orange led (communication) should be ON. If not,
check wiring connection between driver and main
board.
4. Green led (status) should be blinking ON/OFF in rate of
1 time per sec. in case of SB and should be ON in case
of operation. If led is blinking fast (3 times per second):
i. Check ODU main controller dip-switch setting to be
correct.
ii. Check the fault type in the diagnostics.
5.
If all is well but still no compressor action, Replace
driver.
13.5.4.5 YBD036/042/060-H11
In normal operation the red and orange leds are ON continuously and green led is blinking.
Even in that case, there can still be a Hardware problem that prevents the system to perform well or at all. If
no other problem is found, replace the driver.
1. Check power supply to driver board: R,S,T, CAP+, CAP-GND.
2. Red led (Low Voltage) should be ON. If not, check wiring connection between driver and PFC boar
3. Orange led (communication) should be ON. If not, check wiring connection between driver and main
board.
4. Green led (status) should be blinking ON/OFF in rate of 1 time per sec. in case of SB and should be ON
in case of operation. If led is blinking fast (3 times per second):
1. Check communication wiring connection between PFC and ODU main controller boards.
2. Check the fault type in the diagnostics.
If all is well but still no compressor action, Replace driver.
Replacing Driver – (14.1.15).
.