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Troubleshooting,
Fault:
No cooling, fan off
20
continued
No visible or audiable
running indication.
Both fans off
Power connected
Correct and connect
correctly and present ?
Check 24V to DC con-
Green LED on ?
troller inside range ?
Replace DC controller
unplug compressor
controller connetion
Red Alarm LED flash?
cable from board
red LED flash?
Count flashes and
Readout flash count
check according table
and replace parts
in controller
according
desricption
=YES
=NO
Check/replace DC filter
module or cable
Unplug both fans
from board
red LED flash?
Readout flash count
and replace parts
according
Replace DC controller
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