Johnson Controls HVWHP072B32S - Page 32

3-12
SM-18006
TROUBLESHOOTING
● Setting of End Terminal Resistance
Before shipment, No.1 pin of DSW10 (for the setting of end terminal
resistance) is in the “ON” position.
In case of one refrigerant system in the same H-LINK II, keep factory
setting for DSW10 No.1.
● DSW7 Setting for Rated Voltage
DSW7 is used for setting the rated voltage for the water source unit
as shown at right.
When the site power supply voltage is different from factory setting, a
DSW7 setting is required.
CAUTION:
The same voltage setting is required to the main unit and sub unit(s).
If more than one refrigerant system is in the same H-LINK II, set all DSW10 No.1 pins to the “OFF”
position except one water source unit (or outdoor unit).
12 12
ON
OFF
ON
OFF
Before Shipment Cancellation
DSW10
Setting of End Terminal Resistance
Voltage DSW7 Setting
208V
230V
460V
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
12
DSW10
Communication Line
(No Polarity)
H-LINK II
Water Source Unit
Indoor
Unit
Set the end terminal.
Unit A
(Main)
1 2
DSW10
1 2
DSW10
1 2
DSW10
1 2
DSW10
Communication Line
(No Polarity)
H-LINK II
Water Source Unit
Indoor
Unit
Wired Controller
Indoor
Unit
Indoor
Unit
Indoor
Unit
Water Source Unit
Cancel the end terminal.
Cancel the end terminal. Cancel the end terminal.
Set the end terminal
(Before Shipment).
Water Source Unit Water Source Unit
Unit A
(Main)
Unit A
(Main)
Unit A
(Main)
Unit A
(Main)