Technical data

Fault diagnosis
The RCD wired controller includes a fault diagnostic display. For complete information on error codes and
the required rectification, please refer to the Maintenance Data included with the unit instructions.
Error Codes
E1 control wiring broken
pcb defective
E6 indoor heat exchanger thermistor defective
connection to thermistor defective
E7 indoor return air sensor defective
connection to thermistor defective
defective input circuit on pcb
E8 heat overload on indoor heat exchanger
indoor heat exchanger thermistor short circuit
E9 condensate pump wiring disconnected or faulty
float switch defective
defective output circuit on indoor pcb
E57 refrigerant leak
indoor heat exchanger thermistor short circuit
defective thermistor input circuit on pcb
11
RCD Remote Control Functions
FILTER
RESET
CHECK
FAN
SPEED
AUTO
SWING
TIMER
SET
MODE
TEMP
TIME
PROGRAM TIMER
ON
OFF
PM
AM
SET TEMP
E
C
Lo
Mi
Hi
FAN
C
CENTER REMOTE FILTER
AUTODRYCOOLFANHOT KEEP
FILTER AUTO LIFT
Filter reset switch
Use this switch to reset (erase) the filter
sign display.
(Press the switch after cleaning the air filter.)
Filter sign
When this sign is indicated, clean the filter.
Remote display
This is displayed when the unit is controlled
with an individual controller during normal operation.
(Also displayed when the air conditioner is stopped.)
Inspection switch
Use this switch when servicing the unit.
Operation mode display
Displays the operation mode that has
been selected.
Fan speed display
Displays the fan speed that has been set.
Operation/
Inspection indicator lamp
During operation: Green lamp flashes.
In case of error: Red lamp flashes.
On/Off switch
Use this switch to start or stop the
air conditioner.First push on the
switch starts the unit and second
push stops it. (The switch can be
operated without opening the cover.)
Fan speed switch
Use this switch to set a fan speed.
Mode switch
Use this switch to select operation
modes.
Cover
Heating
preparation display
Timer switch
Use this switch when selecting contents of timer operation.
Set switch
Use this switch to set a time for the timer.
Temperature/
Time setting switch
Use this switch to set the room
temperature or time on the timer.
Auto swing switch
Use this switch to operate or stop
the swing louver.
Auto swing display
Indicates the swing louver condition.
Setting
temperature display
Displays the temperature
that has been set.
Return air
temperature display
Displays the return air temperature.
Indicated value may be different
from actual reading on a thermometer
or other instrument but this is not
necessarily an error.
Note
Outdoor No.
Central display
This is displayed when the unit is
controlled with the optional central console.
Timer operation display
Contents of timer operation are displayed.
(Also displayed when the air conditioner
is stopped.)