Aeromax KHP0038, Installation And Maintenance Manual, Page: 24 / 84

24
Inverter board alarm codes KHP0040 12kW unit only (Fig. 14)
Faults of the inverter can be diagnosed by LED indications
on the cycle control P.C. board of the outdoor unit. Utilize
them for various checks.
Before a check, confirm each bit of the DIP switch is set
to OFF position.
System test
LED indication and code checking
LED indication Cycle control P.C. board Cause
LED indication
D800 D801 D802 D803
¢ l l l
Heat exchanger sensor (TE) error
l l ¢ l
Suction sensor (TS) error
¢ ¢ l l
Hot gas discharge sensor (TD) error
l ¢ l ¢
High-pressure protection error
l ¢ l l
Outdoor air temperature sensor error (TO)
¢ ¢ ¢ l
Outdoor motorised fan error DC
¢ l l ¢
Communication error between IPDU (Abnormal stop)
l ¢ l ¢
High-pressure release operation
l ¢ ¢ l
Discharge temp. error: hot gas is too high
¢ ¢ l ¢
EEPROM error
l l ¢ ¢
Communication error between IPDU (No abnormal stop)
t l l l
G-Tr short-circuit protection
l t l l
Detect circuit error
l t l l
Current sensor error
l l t l
Comp. lock error
t l t l
Comp. break down
14
A
C
B
Board position Fig. 14
Legend:
A Position 4 LED Inverter
Diagnostics Board (KHP0040/42
only)
B Position LED GMC Diagnostics
Board
C Installation terminal strip
D800 O: Red
D801 O: Yellow
D802 O: Yellow
D803 O: Yellow
l
: Flashing
t
: Off
¢
: On