Carrier 40MHHQ18-3 User Manual

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

Carrier 40MHHQ18-3 Specifications

General

Refrigerant	R-410A
Compressor Type	Inverter
Net Weight (Indoor Unit)	26 lbs
Cooling Capacity	18, 000 BTU
HSPF Rating	10
Power Supply	208-230V, 1 Phase, 60Hz
Air Flow Volume (High)	500 CFM