Troubles of the inverter can be diagnosed by LED
indicationsonthecyclecontrolP.C.boardoftheoutdoor
unit. Utilize them for various checks.
Beforeacheck,confirmeachbitoftheDIPswitchissetto
OFF position.
System test
Inverter board alarm codes (only for 30AWH012_) (Fig. 16)
LED indication and code checking
Board position
Fig. 16
Legend:
A Position4LEDInverterDiagnosticsBoard(only30AWH012_and30AWH015_)
B PositionLEDGMCDiagnosticsBoard
C Installation terminal strip
LED indication
Cycle control P.C. board
CauseLED indication
D800 D801 D802 D803
D800 O: Red
D801O:Yellow
D802O:Yellow
D803O:Yellow
: Flashing
: Off
: On
Heat exchanger sensor (TE) error
Suction sensor (TS) error
Hot gas discharge sensor (TD) error
High-pressure protection error
Outdoor air temperature sensor error (TO)
Outdoor motorised fan error DC
CommunicationerrorbetweenIPDU(Abnormalstop)
High-pressure release operation
Discharge temp. error: hot gas is too high
EEPROMerror
CommunicationerrorbetweenIPDU(Noabnormalstop)
G-Tr short-circuit protection
Detect circuit error
Current sensor error
Comp. lock error
Comp. break down