
30
Specifications subject to change without notice. SG-38MHRC-01
PCB DIAGRAMS (CONT)
Fig. 35 — Sizes 18-24K (208/230V)
NOTE: After power on, LED3(Green color) and LED2(Red color) will flash if the unit has some problems.
Table 14 — LED Codes
O (light) X (off)
(flash)
NO.
PROBLEMS
LED3 (GREEN)
LED2 (RED)
IU DISPLAY
1
standby for normal
O
X
2
Operation normally
X
O
3
IPM malfunction or IGBT over-strong current protection
X
P0
4
Over voltage or too low voltage protection
O
O
P1
5
EEPROM parameter error
O
E5
6
Inverter compressor drive error
X
P4
7
Inverter compressor drive error
O
P4
8
Inverter compressor drive error
P4