-
254
-
7
Error display :
E9
[Drain trouble]
Indoor unit
Red LED
Green LED
1 time flash
Keeps flashing
Red LED
Green LED
Stays OFF
Keeps flashing
Outdoor unit
Correct it
Replace the indoor
unit PCB.
Replace the indoor
unit PCB.
YES
NO
NO
NO
NO
Is there any
overflow?
Is DM operated?
DC 12 V
at both terminals
of CnI?
YES
NO
Check the operation data
by the remoter controller.
Operate the drain motor
from the remote controller.
YES
YES
Is drain
piping unclogged?
Is the slop OK?
AC 220/240 V
at both terminals
of CnR?
Note (1) DM: Drain motor
YES
Check the DM
and its wiring.
Check the float switch.
Check the DM.
6
Error display :
E8
[Heating overload]
Indoor unit
Red LED
Green LED
1 time flash
Keeps flashing
Red LED
Green LED
Stays OFF
Keeps flashing
Outdoor unit
YES
Is the air filter clogged?
NO
YES
Are the connections to
the indoor heat exchanger thermistor
OK?
Are the characteristics of
the indoor heat exchanger thermistor
OK?
Does the heating
overload state exist?
NO
YES
NO
NO
YES
Notes (1) Check if the overload state exists or not using the following check points.
Is there a short circuit?
Is the indoor heat exchanger dirty or clogged?
Is the outdoor unit’s fan control normal?
Is the indoor or outdoor air temperature too high?
(2) See the figure page 253 for indoor heat exchanger thermistor characteristics.
((
( (
Heating is
possible.
Anomalous stop
56
63
Indoor unit heat exchanger temp. (˚C)
Check the operation data by the remote controller.
Clean it.
Indoor unit heat exchanger
thermistor defective
Replace it
Correct it
Check the refrigeration circuit.
Adjust it
Display condition
An anomalous stop occurs if this state is detected 5 times within 60 minutes of the
fi rst detection, or if the overload state is detected continuously for 6 minutes.
Anomalous temperature detection
Display condition
When it is detected that the fl oat switch is open for 3 seconds continuously, when
the fl oat switch is not connected or when it is disconnected.
