Service manual
14
(1) Before turning on the power of the indoor unit, be sure to set the SW2. If the switches are not set or if the setting are
incorrect, the device will not operate properly.
(2) After setting the switches, turn the indoor unit, R-Converter unit, and outdoor unit on in that order.
(3) In case capacity code setting or address setting is mistaken, reset it, turn off power supply of the outdoor unit, R-Converter
unit and indoor unit for 2 minutes or more at the same time and turn on power supply again in the order of (2).
Switch
SW1 1
2
3
4
5
6
7
8
SW2
SW4 1
2
3
4
5
6
SW11
SW12
Pole Function
Operation by Switch
When to set Remarks
ON OFF
Converse connection error (1110) detection
No Function
Correction of liquid pipe temperature in
heating operation
Change of LEV opening pulse
Change of Remote display
Humidifier control
Correction of liquid pipe temperature in
cooling operation (1)
Correction of liquid pipe temperature in
cooling operation (2)
No Function
No Function
No Function
Correction of LEV opening pulse in dry
operation
Solutions for refrigerant flowing sound after
defrosting operation
Solutions for refrigerant flowing sound
during defrosting operation
Capacity code setting
During stopping the
operation
Setting made at the factory
R-Converter unit controller board
Set the capacity setting of
the R-Converter unit equal
to the capacity setting of
the indoor unit.
Before turning the
power on
Before turning the
power on
Before turning the
power on
Inactive
Active
Change
On signal of thermostat
Always in heating
Active
Inactive
No change
Output from Fan
Thermo-on in heating
Active
Active
Active
Inactive
Inactive
Inactive
Capability
description
Btu HP
Capability
description
Btu HP
SW2 SW2
07
ON
OFF
-
1
1.6
15
2
2.5
-
17
18
24
30
08
09
10
12
13
1 23456
1 23456
1 23456
ON
OFF
ON
OFF
ON
OFF
1 23456
ON
OFF
1 23456
ON
OFF
1 23456 78
1 23456
1 23456
ON
OFF
ON
OFF
Setting made at the factory
ON
OFF
1 23456
Setting made at the factory
Addresses setting on board
Setting made at the factory
6-3. Internal Switch Function Table
R-Converter Unit
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