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TROUBLESHOOTING
■ Dip Switches and LED Functions on Outdoor Unit Printed Circuit Boards
Name of Internal
Circuit Board
Controlling Board: 1 DSW1 Setting of Outdoor Unit Number
PCB1 2 DSW2 Setting of Capacity Code
Outdoor unit capacity is set according to nominal capacity (HP).
3 DSW3 Setting of Height Difference
The height difference between outdoor and indoor units is set.
4 DSW4 A. Test Running for Cooling or Heating
An outdoor unit can be run for testing. When testing has been
finished, reset the function.
B. Forced Stoppage of Compressor
When performing test running or inspection, compressors
can be forcedly stopped to ensure safety.
5 DSW5 A. Changeover of Defrosting Condition
(Optional The defrosting operation for normal areas or cold areas
Function) can be changed over.
B. #7 of Pin: 380V OFF, 415V ON
#8 of Pin: 220V ON
6 DSW6 Setting of Piping Length
The total piping length between the outdoor unit and indoor unit
is set.
7 DSW7 Setting of Emergency Operation
8 DSW8 Test Operation and Service Setting II
No setting is required.
9 DSW9 Optional Function 2
10 DSW10 Transmittin
available under the forced
defrosting area.
12 PSW2 Check Switches
13 PSW3 When checking units, checking items can be selected by these
switches.
14 LED1 Power Source for PCB1
Normal Condition: Activated
Abnormal Condition: Deactivated
15 LED2 This LED2 indicates the transmission state between the PCB1
(Green) and PCB3.
Normal Condition: Flickerin
Abnormal Condition: Activated or Deactivated
16 LED3 This LED3 indicates the transmission state between the
(Yellow) indoor unit and outdoor unit.
Normal Condition: Flickering
Abnormal Condition: Activated or Deactivated
18 SGE1 These indicate the following: "alarm", "protective safety device
SGE2 has tripped" or "checking items".
Part Name Contents of Functions
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