Service manual

3 – 3
[2] TROUBLESHOOTING GUIDE
TR OUB LES HOOTING GUIDE
1. S EL F-DIAGNO S IS FU N CTIO N AND DIS PLA Y MO D E
(1) To call out the content of the s elf-dia gnosis memory, hold down the emergency operation button for more than five
seconds whe n the indoor unit is not operating.
a) Accordi ng to the content of the self-diagnos is memory, the Operation LE D (main cat egory) and t he P lasmacl uster
Ion L E Ds (sub-category) flash in sync wit h the T imer LE D on the indoor unit.
b) Intheeventacompleteshutdownoccursduetoamalfunction,theOperationLED(red),TimerLED(yellow),
P lasmaclus ter Ion LE D (blue), and P lasmacluster Ion LE D (green) flash to indicate the general information of
the generated ma lfunction.
c) I f the power cord is unplugged from the A C outlet or the circuit breaker is turne d off, the s elf-dia gnos is me mory
loses the stored data.
(2) Display of detailed self-diagnos is result with main category and s ub-category indications
When malfunction information is called out, the main category and sub-category of the self-diagnos is res ult are
indicat ed by t he Operation, T imer, and P las maclus ter Ion LE Ds on the indoor unit.
*2: The self-diagnosis display function of the outdoor unit indic ates the error information by flas hing LE D1 on the
outdoor unit according to the content of self-diagnosis.
T he s elf-diagnos is dis play function of the outdoor unit is active only for about 3 to 10 minutes after s elf-diagnos is is
performe d during opera tion, a nd the dis pla y re turns to norma l condition a fte r this dis pla y pe riod.
T he content of s elf-diagnos is cannot be called out by the s elf-diagnosis dis play function of t he outdoor unit.
*1: E xa mple of s elf-diagnos is res ult dis played on indoor unit: S uction thermis tor open-circuit error
Timer LED [yellow]
ON
OFF
B as ic flas hing cycle due to error 1 sec 1 s ec 1 s ec 5 s ec
Figures in ( ) indicate numbers (binary notation) ass igned based on the flas hing s equence.
Flashing for main category indication
F lashing for sub-category indica tion
ON
OFF
Operation LE D [red]
P lasmacluste r I on LE D [blue]
Ma lfunction No.
Main ca tegory S ub-ca tegory
E xample of self-diagnosis display on outdoor unit : C ompressor high-temperature abnormality
0.5 sec 0.5 s ec 0.5 sec 0.5 sec 0.5 s ec 0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec0.5 sec 0.5 sec 0.5 sec
ON
OFF