Read Sharp AU-A18 (serv.man7) Service Manual online
AH-AP18CS
AH-AP24CS
AU-A18CS
AU-A24CS
AH-AP24CS
AU-A18CS
AU-A24CS
14
Indoor
fan motor
fan motor
Thermistor
short state
short state
Thermistor
open state
open state
Timer
LED
LED
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Operation
LED
LED
Operation
LED
LED
Operation
LED
LED
1sec.
1sec.
4sec.
9. Outputs in each operation mode
Table H-4
10. Power on start
If the connecting wire "JP5 is shorten the PWB ass'y,
when the power is supplied by turning on a circuit
breaker, the air conditioner automatically starts of
operation in "AUTO".
(Refer to Figure L-2, L-4. Printed Wiring Board)
when the power is supplied by turning on a circuit
breaker, the air conditioner automatically starts of
operation in "AUTO".
(Refer to Figure L-2, L-4. Printed Wiring Board)
11. AUTO RESTART
Power failure occurs during operation, the unit will
restart in the same operation mode as before power
recovery.
restart in the same operation mode as before power
recovery.
12.Test mode
Keep pushing the "AUX." buttons and supply the
power, the system will go to the test mode. In this
mode, the output of operation is switched by pushing
the ""AUX." button in the unit or the "OI" button in the
remote controller. Normal outputs are shown in Table
H-5.
power, the system will go to the test mode. In this
mode, the output of operation is switched by pushing
the ""AUX." button in the unit or the "OI" button in the
remote controller. Normal outputs are shown in Table
H-5.
ON
OFF
ON
OFF
ON
ON
ON
ON
OFF
OFF
ON
OFF
ON
L/UL
UL/D
OFF
D/OFF
OFF
OFF
OFF
Mode
Compressor
Outdoor
Fan Motor
Cooling
Circulating
Indoor
Fan Motor
Valve
Coil
C
O
O
O
O
L
D
R
Y
R
Y
Cooling
Circulating
Dehumidiflying
13.Diagnosis procedure
When indoor fan motor is out of order or compressor lock occurs, the compressor, indoor fan motor, outdoor fan
motor, and louver are all stopped and the operation LED(red) turns on or off synchronously with the timing of the
timer LED.
When the thermistor for room temperature or pipe temperature is open or short state, the operation LED turns on
or off synchronously with the timing of the timer LED by pushing continously for more than 5 seconds "AUX."
button during suspension of operation.
motor, and louver are all stopped and the operation LED(red) turns on or off synchronously with the timing of the
timer LED.
When the thermistor for room temperature or pipe temperature is open or short state, the operation LED turns on
or off synchronously with the timing of the timer LED by pushing continously for more than 5 seconds "AUX."
button during suspension of operation.
Timing chart of Timer LED and Operation LED of DIAGNOSIS PROCEDURE.
When "OI" button the remote controller or "AUX." button in the unit is pushed, the unit is free from DIAGNOSIS
PROCEDURE.
When "OI" button the remote controller or "AUX." button in the unit is pushed, the unit is free from DIAGNOSIS
PROCEDURE.
When the louver unit is not properly installed, all lamps on the indicaor panel will blink.
Operation are all stop and remote signal is not accept.
Operation are all stop and remote signal is not accept.
14.Plasma Cluster
Timer LED
(Yellow)
Judgement
ON
Normal
(Generator OK)
OFF
Failure
(Check circuit)
Cluster generator checking (step 1)
1
Plasma Cluster ion mode
Minus ion mode
SSR2
ON
ON
Relay
(Cluster unit inside)
OFF
ON
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