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Indoor Unit
Control Specifications
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1
Upon power
supply reset
1. Identification of outdoor unit
When the power supply is reset, the outdoor unit is identified, and control is
redirected according to the identification result.
2. Indoor fan speed and air flow direction control availability settings
Settings such as indoor fan speed and air flow direction control availability are
replaced on the basis of EEPROM data.
3. If power supply reset is performed in the wake of a fault, the check code is cleared.
If the abnormality persists after the Start/Stop button on the remote controller is
pressed to resume operation, the check code is redisplayed on the remote
controller.
2
Operation
selection
1. The operation mode changes in response to an operation selection command
issued via the remote controller.
Ts: Temperature
setting
Ta: Room temperature
3
Room temp.
control
1. Adjustment range - remote controller temperature setting (°C)
2. In heating operation, the temperature setting may be fine-tuned via the DN code
“06”.
Factory default
Shift in heating suction
temperature
(not applicable to
remote controller
thermo operation)
4
Automatic
capacity control
1. The outdoor unit determines the operational capacities of indoor units according
to the difference between Ta and Ts.
Ts: Temperature
setting
Ta: Room temperature
Remote controller command Control outline
STOP Air conditioner shutdown
FAN Fan operation
COOL Cooling operation
DRY Drying operation
HEAT Heating operation
COOL/DRY HEAT
Wired type 18~29 18~29
Wireless type 17~30 17~30
6420ATAD TES
Temperature setting adjustment +0°C +2°C +4°C +6°C
SET DATA
2
SD
SB
S9
S7
S5
S3
S0
Cooling
+2
+1
Ts
-1
S3
S5
S7
S9
SB
SD
SF
S0
Heating
+1
Ts
-2
-1
Ta
(°C)
Ta
(°C)
5 Control Outline