York HIDS006B21S Service Manual page 54

TROUBLESHOOTING
Alarm
Code
l The RUN indicator (red) flashes.
l The indoor unit number (refrigerant cycle number - address number), the alarm code, the model code
the model name
is displayed on the 7-segment display of the outdoor unit PCB.
Note 1: Except for some models.
1. This alarm code is indicated when the capacity setting DIP switch, DSW2, on the outdoor unit PCB, is not
set (all the settings from #1 to #6 are OFF) or set incorrectly.
2. This alarm code is displayed when the total indoor unit capacity exceed the connectable indoor unit
capacity ratio of outdoor unit.
Are #1-#6 of DSW2 on
O.U. PCB set incorrectly?
Are #1-#4 of DSW3 on
I.U. PCB set incorrectly?
Are the settings of
DSW1 and RSW1 on
O.U. PCB and setting
of DSW5 and RSW2 on
I.U. PCB totally same in
a refrigerant cycle?
Total indoor unit capacity
is wrong.
Event
Incorrect Capacity Setting of Indoor Unit
Incorrect Capacity Setting of Outdoor Unit
Total Indoor Unit Capacity Connected to
Outdoor Unit is Beyond Permissible Range
Refrigerant Cycle Setting of Outdoor Unit
and Indoor Unit is Different
Refrigerant Cycle No. Setting
10 digit
ON
OFF
1 2
Outdoor Unit DSW1
Indoor Unit DSW5
1: Refer to "Installation and Maintenance Manual" of outdoor unit for details.
3-32
Incorrect Capacity Setting of Outdoor Unit and Indoor Unit
1
and the number of connected indoor units are displayed on the LCD. The alarm code
Yes
No
Yes
No
No
Yes
Cause
Setting Switch
1 digit
Setting Position
0
Set by inserting
slotted screwdriver
3 4 5 6
into the groove.
RSW1
RSW2
O.U. PCB: Outdoor Unit PCB (PCB1)
I.U. PCB:
Check Item
Check combination of
indoor units and capacity
setting of I.U. PCB.
Check capacity setting
of O.U. PCB.
Check outdoor unit
model by calculating
total indoor units
capacity.
Check refrigerant cycle
setting of O.U. PCB
and I.U. PCB.
Example of Setting Refrigerant Cycle No.25
0
ON
OFF
1 2 3 4 5 6
Turn ON No. 2 pin. Set Dial No.5.
DSW and RSW factory setting is 0.
Maximum in setting refrigerant cycle No. is 63.
Indoor Unit PCB
Set capacity of O.U. PCB.
Set capacity of I.U. PCB.
Set them correctly.
Outdoor Unit PCB: DSW1, RSW1
Indoor Unit PCB: DSW5, RSW2
Action
(Turn OFF Main Switch)
Correctly set DIP switch,
DSW3.
Correctly set DIP switch,
DSW2.
Ensure that total
indoor unit capacity is
within permissible
range.
1
Set them correctly.
SM-18001-rev.1
1
,