EAS Electric ECRP86EKD, Operating Manual

Page: 88 / 89

Troubleshooting
Error code and
description
Possible Causes Possible Solutions
No display on the
wired controller
IDU
is not powered on Power on the
IDU
.
Wired controller connection error
First power off the
IDU,
and then check if
the wired controller connection is correct.
See Section 3.
4
on the wiring requirements.
Wired controller damaged Replace the wired controller.
Power supply failure of the
IDU
main PCB Replace the
IDU
main PCB.
E9
Wired
controller
and
IDU
communi
cation
fault
IDU has no
address or
IDU
address
duplicated
Set an address for the
IDU
; duplicated
IDU
addresses are not allowed in the same
system.
Wired controller damaged Replace the wired controller.
IDU
main PCB fault Replace the
IDU
main PCB.
Some functions of
the indoor unit
cannot be
controlled
,
such
as
O
N/
O
FF
,
temperature
, mode,
fan speed and wired
controller lock.
The
" "
icon in the wired controller is
always on.
Check if the indoor unit has been locked by
the centrali
z
ed controller
.
Table 8.1
41
V.2