Mitsubishi PUHY-P250YJM-A - Page 163

[ IX Troubleshooting ]
- 154 -
HWE1018A GB
1. Error Code
No ACK error
2. Error definition and error detection method
The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans-
mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.)
The address/attribute appeared on the display on the remote controller indicates the controller which did not provide
the response (ACK).
3. System configuration
(4) Errors that are not limited to a particular system
6607
Error
source ad-
dress
Error dis-
play
Detection
method
Cause Check method and remedy
Address
which
should not
be existed
- - (1) System controller address
was changed after the group
setting had been made via the
controller, and the old address
is still retained by the indoor
unit.
Delete unnecessary informa-
tion of non-existing address
which some indoor units have.
Use either of the following two
methods for deletion.
(2) The address of the LOSSNAY
unit was changed after the in-
terlocking setting had been
made via the MA remote con-
troller, and the old address is
still retained by the indoor unit.
1) Deleting unnecessary address-
es from the system controller
Delete unnecessary addresses
using the manual address set-
ting function on the system con-
troller.
Refer to the Instructions Manu-
al that came with the system
controller.
2) Deletion of connection informa-
tion of the outdoor unit by the
deleting switch
Note that the above method
will delete all the group set-
tings set via the system con-
troller and all the interlock
settings between LOSSNAY
unit and indoor units.
Turn off the power source of
the outdoor unit, and wait for
5 minutes.
Turn on the dip switch (SW2-
2) on the outdoor unit control
board.
Turn on the power source of
the outdoor unit, and wait for
5 minutes.
Turn off the power source of
the outdoor unit, and wait for
5 minutes.
Turn off the dip switch (SW2-
2) on the outdoor unit control
board.
 Turn on the power source of
the outdoor unit.