Does not operate at all (Operation Lamp and Timer Lamp do not light up)
[Check Point]
(1) Is the input power voltage from the exclusive circuit AC outlet normal?
(2) Is the AC plug inserted to the AC outlet securely and not loose?
(4) Check if each connector is inserted securely.
[Checking Flow Chart]
YES (AC208/230V)
YES (AC208/230V)
YES (AC208/230V)
YES (DC5V 0.25V)
(IC5, T1 or IC8,11 defective)
YES (DC15V 1V)
YES (DC5Vp-p, Pulse wave of 60Hz)
(The temperature fuse in a terminal
board is open or F1, VA1 defective)
Controller PCB defective
NO
NO
NO
NO
NO
NO
NO
(D1, R1, L1 defective)
07-01
Does not connected cable do wrong wiring?(3)
(C19:DC 8.0V 3V)
YES (C13:DC13.5V 1V)
Is AC input voltage between terminal 1-2 normal ?
Fault of an input power supply.
Is AC voltage between VA 1 normal?
Power supply input circuit
Is DC voltage between terminal of C5 normal?
Switching power circuit
Switching power circuit
Is DC voltage between terminals of C13 and C19 normal?
Is DC voltage between terminals of C22 normal?
IC6 defective
Is DC voltage between terminals of C17 normal?
IC7 defective
Is DC voltage between terminal 1,2 of IC10 normal?
IC4 defective
(The power supply is not supplied to an outdoor unit
terminal board.)
(The connection mistake of an outdoor unit terminal board.)
(Outdoor unit F202 open)
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