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8. CIRCUIT BOARD SETTING
Remove the cover of main unit by the following procedure to perform the
initial setting.
Tightening torque
M3 screw
When the cover is removed, the circuit board appears.
The circuit board has DIP switches and LEDs as shown below.
Perform the initial setting using 3 DIP switches (SET 1 to 3)
on the circuit board.
(1) 2WIRE/3WIRE setting (SET1)
Remote controller 2WIRE/3WIRE switching SW
"Factory setting : 2WIRE"
Set matched with the connection method of the remote controller cable to be connected.
(2) Single-stage or Two-stage setting
SW
SET3-1
OFF
ON
(3) Temperature setting
(3)-1 Single-stage setting
Cooling setting temperature
SW
SET3-2
OFF
ON
4.4 to 5.3 lbf·in
(0.5 to 0.6 N·m)
(5 to 6 kgf·cm)
Contents
Temperature setting: Single-stage
Temperature setting: Two-stage
(: Factory setting)
Cooling Stage 1 setting
temperature
Remarks
°F (°C)
64 (18)
Pattern1
68 (20)
Pattern2
(: Factory setting)
Heating setting temperature
SW
SW
SET3-3
SET3-4
OFF
OFF
OFF
ON
ON
OFF
ON
ON
(3)-2 Two-stage setting
Cooling setting temperature
Cooling Stage 1 setting
SW
temperature
SET3-2
°F (°C)
OFF
68 (20)
ON
72 (22)
Heating setting temperature
Heating Stage 1
SW
SW
SET3-3
SET3-4
temperature
OFF
OFF
OFF
ON
ON
OFF
ON
ON
NOTES:
These are the limit temperature for cooling and heating.
Energy saving performance is improved in the order from Cooling Pat-
tern 1 to 2 and Heating Pattern 1 to 4.
(4) Delay off setting
SW
SW
SET2-3
SET2-4
OFF
OFF
OFF
ON
ON
OFF
ON
ON
Delay OFF:
Delay OFF is the function to operate continuously after reaching to the
setting temperature of thermostat.
This function may make the air conditioning efficient.
Set the Delay OFF time by SW SET 2-3 and SW SET 2-4.
(5) Fan setting (G signal)
SW
SW
SET2-1
SET2-2
OFF
OFF
OFF
ON
ON
OFF
ON
ON
Heating Stage 1 setting
temperature
Remarks
°F (°C)
86 (30)
Pattern1
81 (27)
Pattern2
75 (24)
Pattern3
70 (21)
Pattern4
(: Factory setting)
Cooling Stage 2 setting
temperature
Remarks
°F (°C)
64 (18)
Pattern1
68 (20)
Pattern2
(: Factory setting)
Heating Stage 2
setting
setting
Remarks
temperature
°F (°C)
°F (°C)
81 (27)
86 (30)
Pattern1
77 (25)
82 (28)
Pattern2
75 (23)
79 (26)
Pattern3
70 (21)
75 (24)
Pattern4
(: Factory setting)
Delay off time
0 minutes
5 minutes
10 minutes
20 minutes
(: Factory setting)
Indoor unit airflow
Auto
High
Med.
Low
(: Factory setting)
En-6
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