Troubleshooting
Samsung Electronics
4-41
4-3. Diagnostic Checklist
<AC024/030/036/042/048BXADCH,
AC030/036BXSCCC, AC030/036BXSCCH>
1) Defrost test mode
Condition 1: The outdoor temperature is below 10°C.
Condition 2: All the temperature conditions should meet the defrost conditions.
2) Indication on the display and action to take when an inverter fault is detected
SEG1
SEG2
SEG3
SEG4
Action to
take
Fault
detection
is in
progress
-
OK
-
NG
PBA defect:
Replace the
PBA
Check
Manual
inspection is
required
Going
into fault
detection
mode
failed
Try fault
detection
again
3) Auto check (Installation commissioning mode)
To ensure normal operation of the product, first make sure to complete auto
check.
.
※ AC***BXSCCC series are not allowed to proceed K1 key test operation mode
due to cooling only models.
Key Switch
Key Switch
7-segment display
7-segment display
<AC009/012/018BXADCH, AC018/024BXSCCC>
4-3-1. Test operation mode and check mode
■ Display Options key
Key
Push type
Mode
Display
SEG 1 SEG 2 SEG 3 SEG 4
K1
Short
1st
Heating test mode
2nd
Defrost test mode ¹⁾
3rd
End Key operation
K2
Short
1st
Cooling test mode
2nd
Inverter check
3rd
Pump down
4th
Unuesal
5th
Inverter Fault
Detection (Comp#1)
2)
6th
Auto trial operation
7th
Auto check
3)
(Installtion
commissioning mode)
8th
End Key operation
K3
Short
1st
Reset Release Eco
mode
7-segment display
7-segment display
Key Switch
Key Switch
