Johnson Controls YVAHP0721CW Series, Service Manual

Page: 174 / 416

3-10
SM-16007
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 thermo control is operated, the DSW setting
will be different as shown below.
(1) Outdoor Unit (factory setting)
Turn OFF all power sources before the setting.
Without turning OFF all power sources, the switches do not work and the settings are invalid.
(However, DSW4-No.1, 2, 4 and push switches can be operated while the power source is ON.)
The “
Q
” mark indicates positions of DIP switches.
Figure 1.2 DSW Setting
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Turn ON the DSW5-No.5 pin for the high static pressure setting.
This setting enables high static pressure operation up to a maximum of 0.24 in.W.G. (60Pa).
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is required to secure a louver or a duct, this setting should be used.
NOTES:
1. If there is a combination of outdoor units, set this function for all the outdoor units.
2. While the unit operates in high static pressure mode, the operation sound value increases by 3dB from
the nominal value.
1 3 4
ON
2 6 5 1 3 4
ON
2 6 5
Setting Item Pin No.
Capacity
[x 1000 Btu/h]
72 96
DSW2
Setting
Except No.1 Comp. Operation
Except No.2 Comp. Operation
High Static Pressure Mode
1
2
5
Turn ON the dip switch
when use the below functions.
The outdoor unit is not single, the combination setting
is necessary.
Be sure to do this setting.
3 2 1 4
ON
5 6
DSW1
Tens Digit
0
7
9
5
8
6
4
3
Setting Position
1
2
RSW1
Last Digit
DSW1
Set the unit number of outdoor unit
at each refrigerant cycle.
(Setting before shipment is unit 0.)
Ref. Cycle No. Setting
DSW3
Setting Before Shipment
DSW10 Transmission Setting Power Supply Setting and Service Setting
For End Resistance
Cancellation
End Resistance
Cancellation
2 1
ON
2 1
ON
Setting Before
Shipment
208V, 230V Unit: 230V Setting Before Shipment
460V Unit: 460V Setting Before Shipment
208V Unit:
230V, 460V Unit:
208V 230V 460V
Test Run and Service Setting DSW4
For Test Run,
Function Setting and
External Input/Output
Setting
1
ON
2 3 4 5 6
Setting Before
Shipment
Setting Before
Shipment
Setting Before
Shipment
DSW5
3 2 1 4
ON
5 6
Emergency Operation / Test Run and Service
/ High Static Pressure Mode Setting
2 1
ON
3 4
Single Setting
(Setting Before Shipment)
Capacity Setting DSW2
DSW7
2 1
ON
3 4 2 1
ON
3 4 2 1
ON
3 4
2 1
ON
3 4
Combination Setting
2 1
ON
3 4 2 1
ON
3 4
Unit A
(No.0 Unit)
Unit B
(No.1 Unit)
Unit C
(No.2 Unit)
Outdoor Unit No. Setting
DSW6
Setting is required. Setting is required.
Setting is required.
No setting is required.
No setting is required.
ON
1 4 3 2
No setting is required.
No setting is required.
Setting is required.
Setting is required.
IMPORTANT NOTICE
In case of installing the air outlet duct kit (field-supplied),
make sure to turn ON DSW5-No.5.
IMPORTANT NOTICE
Refrigerant Amount Judgement 4
Setting Item Pin No.
Test Cooling Operation
Test Heating Operation
External Input/Output Setting
1
Setting Item Pin No.
Except Hot Gas Defrost Operation 3
Function Setting 4
1, 2
4, 6
Compressor Forced Stop
and Function Setting
4
Set DSW10-No.1 correctly in
the same H-LINK system.
Otherwise, it may cause abnormal transmission.