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AHP60 26/32 kW - Installation, Use and Maintenance
Code Description
Inverter
E801
board
communication
(*)
error
continued
6.3. Inverter board errors
Error code
Error designation
Internal communication loss
(main Inverter card)
E801
Time out
Connection output (POE)
E851
activation : protection is
inactive
56 / 74
Cause
• The communication cable
between the inverter
board and the opto-
coupler is not connected
or is defective.
• The opto-coupler OPT1 is
defective or not powered.
• Check the fan fuse
Probable causes
The connection is stopped
or the main Inverter card
communication has stopped
Internal
between Inverter and main
controller mismatch
Processor failure
Solution
If the functional diagram connections are all present,
Check:
•
Check if opto-coupler OPT1 is powered, if there is a
12V voltage between the terminals Vcc and GND.
•
Bypass
the
opto-coupler
compressor
board
determine
if
the
•
If
the
LEDs
of
board INV1 are not flashing and the board is
powered, the board INV1 needs to be changed.
bus
configuration
separating
and
the
fan
board
opto-coupler
is
working.
the
compressor
Solution
Check
the
communication
cabling between the controller
and the driver
Check internal bus configuration
in both cards
Restart the driver, and replace
the motherboard if the failure
remains
00U07352250-A_ EN
the
to
:
inverter
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