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9. Troubleshooting
9.1 Indoor unit error display
For 7k,9k,18k models:
Operation lamp Timer lamp
Failure
☆
X
Indoor fan speed has been out of control
☆
O
The T1 or T2 sensor is open circuit or short circuit
X
☆
Over current protection occurs 4 times.
O
☆
EEPROM error
☆
☆
Zero crossing detection error
For 21k,24k models:
Operation
lamp
Timer
lamp
Defrosting
lamp
Auto
lamp
Failure
☆
☆
☆
X
Over current protection occurs 4 times.
☆
X
X
X
The T2 sensor is open circuit or short circuit
X
☆
X
X
The T1 sensor is open circuit or short circuit
X
X
☆
X
The T3 sensor is open circuit or short circuit
☆
☆
X
X
EEPROM error
X
X
X
☆
Indoor / outdoor units communication error
X
X
☆
☆
Outdoor units protection
O
（
light
）
X
（
off
）
☆
（
flash
）
Summary of Contents for R ON-OFF series
Page 1: ...SPLIT WALL MOUNTED TYPE R ON OFF SERIES...
Page 8: ...6 2 Function...
Page 11: ...9 3 Dimension 3 1 Indoor Units Figure 1 Figure 2...
Page 14: ...12 4 Refrigerant Cycle Diagram For heat pump models...
Page 15: ...13 5 Wiring Diagram 5 1 Indoor Units KSR1 07HRN1 QC2 A KSR1 09HRN1 QC2 A KSR1 18HRN1 QB8...
Page 16: ...14 KSR1 21HRN1 QB8W KSR1 21CR QB6W KSR1 21HR QB6W KSR1 24HRN1 QB8W...
Page 17: ...15 5 2 Outdoor Units KOK1 07HN1 QC2 KOA1 09HN1 QC2...
Page 18: ...16 KOE 18HN1 QB8...
Page 19: ...17 KOF 21HN1 QB8W K0F2 21C QB6W KOP 21H QB6W...
Page 20: ...18 KOF2 24HN1 QB8W...
