York IDM030B21E Series, Service Manual, Page: 29 / 144

SM-16005-rev.2
3-7
TROUBLESHOOTING
3.1.3 Checking Rotary Switch and DIP Switch Settings
The following diagram indicates the factory settings of DSWs on PCBs in the indoor and outdoor units.
When simultaneous operation control of multiple units or room thermostat control is operated, the DSW
setting will be different as shown below.
(1) Outdoor Unit (Factory Setting)
Refer to the Service Manual for Outdoor Unit.
(2) Indoor Unit (Factory Setting)
The positions of the DIP switches on the PCB are shown in the figure below. Turn OFF all power
supplies before setting.
Without turning OFF all power supplies, the switches do not work and the settings are invalid.
The “
n
” mark indicates the positions of DIP switches.
RSW1
(Indoor Unit No. Setting)
RSW2
DSW7 (Fuse Recovery)
DSW4 (Unit Model Code Setting)
DSW8 (Optional Function Setting)
DSW9 (Optional Function Setting)
DSW3 (Capacity Code Setting)
DSW6
(Indoor Unit No. Setting)
DSW5 (Refrigerant Cycle No. Setting)
(Refrigerant Cycle No. Setting)
ON
1 2
DSW7
0
98
7 6 5 4 3
21
0
98
7 6 5 4 3
21
ON
1 2 3 4 5 6
ON
1 2 3 4
ON
1 2
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
DSW4
DSW5
RSW2
RSW1
DSW6
ON
1 2 3
DSW3
DSW9
DSW8
● Ducted (Medium Static) with EconoFresh Kit
DIP Switch Settings
(1) Turn OFF the power supply of the indoor unit and the outdoor unit before DIP switch setting. Not doing
so makes the setting invalid.
(2) Factory settings for DSW6 and RSW1 are set to “0”. If connecting the indoor unit to H-LINK II
supporting the outdoor unit without setting any DIP switches, auto-address setting is performed by the
wired controller.
(3) Auto-Address Setting by Wired Controller
The address numbering is started from “0” by the auto-address function when the wired controller is
connected to H-LINK II.
(4) Unit No. Setting (RSW1 and DSW6)
The indoor unit numbers of all indoor units
are not required. The indoor unit numbers
are set by the auto-address function. If the
indoor unit number setting is required, set the
unit numbers of all indoor units respectively
and serially by following setting positions. It
is recommended to assign a number to each
indoor unit beginning with “1.” Though a
maximum of 64 indoor units per refrigerant
system can be connected to the H-LINK ll
System, available numbers range from 0 to 63.
Therefore, the applicable number for the 64th
indoor unit is “0.”
For centralized control, this setting is required.
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6
ON
OFF
DSW6 (Tens Digit)
Unit No. Setting
RSW1 (Units Digit)
Setting
Position
Set by inserting
slotted screwdriver
into the groove.
Ex.) Set at No.16 Unit
DSW6
RSW1
Set No.1 Pin at ON side
Set at "6"
34
1 0
89
2
56
7
34
1 0
89
2
56
7
Factory settings for DSW6 and RSW1 are set at "0".
For the units supporting H-LINK II, the unit numbers can
be set for a maximum of 64 indoor units (No.0 to 63).