10
QUESTION AND ANSWER
Opera-
tion lamp
Malfunc-
tion code
Contents of mal-
function
Turn off
M1
Failure of PC board
of schedule timer.
Fixes
The following
causes are possi-
ble. Check each
one.
1.
PC board prob-
lems
Turn on
or off
M8
Malfunction of
transmission
between each
optional controllers
for centralized con-
trol.
Fixes
Check all central
devices which are
connected (e.g.,
power supply,
transmission
wiring, etc.).
Turn on
or off
MA
Improper combina-
tion of optional
controllers for cen-
tralized control.
Fixes
The following
causes are possi-
ble. Check each
one.
1.
Are all central
devices com-
bined correctly?
2.
Is the master
central connec-
tor attached to
two or more cen-
tral devices?
3.
Are there 128 or
more indoor
units con-
nected?
Turn on
or off
MC
Address failure of
schedule timer.
Fixes
The following
causes are possible.
Check each one.
1.
Do the control
range addresses
in the central
remote control-
ler overlap?
2.
Do the control
range addresses
in the on/off con-
troller overlap?
3.
Are there 2 or
more schedule
timers con-
nected?
Flash
UE
Malfunction of
transmission
between indoor
unit and optional
controllers for cen-
tralized control.
Fixes
Inspect all indoor
units which are dis-
playing an error
(e.g., power supply,
transmission
wiring, etc.).
Flash
—
Malfunction in
indoor unit (Refer
to the malfunction
codes of the indoor
remote controller,
while also read the
“ CAUTION FOR
SERVICING ”
attached to the
indoor unit.)
Question
Answer
It is possible to
make settings
twice a day, but is
it possible to
make only the
“ off ” setting?
(To avoid forget-
ting to turn the
unit off.)
Yes. Press the PRO-
GRAM CANCELING
BUTTON in the “
”
section in order to set it
to “
OFF
”.
01_EN_3P124623-5C.fm Page 10 Wednesday, August 3, 2005 2:20 PM
