32 Specifications subject to change without notice. SG-38MARB-01
DIAGNOSIS AND SOLUTION
Outdoor Unit Error Display
Sizes 12 (115V)
After the power is on, LED1 (blue color) flashes slowly (once per second) when the unit is in standby. The LED flashes quickly (twice per
second) if the unit has an issue.
Table 19 — Diagnostic Table Sizes 9K-18K
O (light) X (off) (2.5 Hz flash)
Table 20 — Diagnostic Table Sizes 24K- 36K
NO. PROBLEMS LED3 (GREEN) LED2 (RED) IU DISPLAY SOLUTION
1 IPM malfunction or IGBT over - strong current protection X P0 Page 46
2 Over voltage or too low voltage protection O O P1 Page 49
3 EEPROM parameter error O
E5 Page 33
4 Inverter compressor drive error X P4 Page 52
5 Inverter compressor drive error O P4 Page 52
6 Inverter compressor drive error P4 Page 52
NO. PROBLEMS LED2 (GREEN) LED3 (RED) IU DISPLAY SOLUTION
1 IPM malfunction or IGBT over - strong current protection
X P0 Page 46
2 Over voltage or too low voltage protection O O P1 Page 49
3 EEPROM parameter error O
E5 Page 33
4 Inverter compressor drive error X
P4 Page 52
5 Inverter compressor drive error
O P4 Page 52
6 Inverter compressor drive error
P4 Page 52
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