En-6
8. CIRCUIT BOARD SETTING
Remove the cover of main unit by the following procedure to perform the
initial setting.
Tightening torque
M3 screw
4.4 to 5.3 lbf·in
(0.5 to 0.6 N·m)
(5 to 6 kgf·cm)
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
Contents
OFF
Temperature setting: Single-stage
ON
Temperature setting: Two-stage
(
: Factory setting)
(3) Temperature setting
(3)-1 Single-stage setting
Cooling setting temperature
SW
SET3-2
Cooling Stage 1 setting
temperature
°F (°C)
Remarks
OFF
64 (18)
Pattern1
ON
68 (20)
Pattern2
(
: Factory setting)
Heating setting temperature
SW
SET3-3
SW
SET3-4
Heating Stage 1 setting
temperature
°F (°C)
Remarks
OFF
OFF
86 (30)
Pattern1
OFF ON
81
(27)
Pattern2
ON
OFF
75 (24)
Pattern3
ON
ON
70 (21)
Pattern4
(
: Factory setting)
(3)-2 Two-stage setting
Cooling setting temperature
SW
SET3-2
Cooling Stage 1 setting
temperature
°F (°C)
Cooling Stage 2 setting
temperature
°F (°C)
Remarks
OFF
68 (20)
64 (18)
Pattern1
ON
72 (22)
68 (20)
Pattern2
(
: Factory setting)
Heating setting temperature
SW
SET3-3
SW
SET3-4
Heating Stage 1
setting
temperature
°F (°C)
Heating Stage 2
setting
temperature
°F (°C)
Remarks
OFF
OFF
81 (27)
86 (30)
Pattern1
OFF
ON
77 (25)
82 (28)
Pattern2
ON
OFF
75 (23)
79 (26)
Pattern3
ON
ON
70 (21)
75 (24)
Pattern4
(
: Factory setting)
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
SET2-3
SW
SET2-4
Delay off time
OFF
OFF
0 minutes
OFF
ON
5 minutes
ON
OFF
10 minutes
ON
ON
20 minutes
(
: Factory setting)
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 ef
fi
cient.
Set the Delay OFF time by SW SET 2-3 and SW SET 2-4.
(5) Fan setting (G signal)
SW
SET2-1
SW
SET2-2
Indoor unit air
fl
ow
OFF
OFF
Auto
OFF
ON
High
ON
OFF
Med.
ON
ON
Low
(
: Factory setting)
Содержание UTY-TTRX
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