DOWNLOAD Sharp AE-A184 Service Manual ↓ Size: 1.44 MB | Pages: 44 in PDF or view online for FREE

17

Step 

1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

22 

Output for outdoor unit 

Lamps

RED

YELLOW

Indoor

Fan motor

Louver

OFF 

Compressor 

Reverse Valve 

Ootdoor Fan Motor

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

(Back to step 1)

OFF 

OPEN 

ON 

D

OFF 

Flikering

OFF 

M 

OFF 

ON 

ON 

L 

CLOSE 

ON

ON 

D 

OFF 

ON 

UL

OFF 

ON

ON 

H 

OFF 

ON 

ON 

M

OFF 

ON 

ON 

L 

OFF 

ON 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

ON 

ON 

OFF 

OFF 

ON 

OFF 

OFF 

OFF 

ON 

ON 

OFF 

OFF 

OFF

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

ON 

ON 

OFF 

OFF 

ON 

OFF 

OFF 

OFF 

ON 

ON 

OFF 

OFF 

OFF 

ON 

OFF 

OFF 

OFF

OFF  

OFF 

OFF 

OFF 

OFF 

OFF 

OFF 

ON 

1

2 

3

4

5

5

1

2

3

4

5

: 7˚C     Room temp.     42˚C                                                                            ON     
  7˚C     ( Room temp.) or (Room temp.)     42˚C                                              OFF  

: –2˚C     Pipe temp.      42˚C                                                                           ON
  –2˚C     Pipe temp. or (Pipe temp.)      42˚C                                                  OFF

: 0.1V     (ANI2 INPUT VOLTAGE)    0.45V                                                     ON
  (0.1V     ANI2 INPUT VOLTAGE) or (ANI2 INPUT VOLTAGE)   0.45V         OFF

: When Power on start is effective, Timer LED(yellow) is OFF.

: When AUTO RESTART is effective, Operation LED(red) is OFF, and Timer LED(yellow) is ON.

18

measure the secondary voltage
of transformer.

YES

NO

YES

NO

The machine does not function
at all with remote controller and
switches on the indoor unit. 

Using a tester, measure the 
voltage between anodes of D1 
and D2 on the PWB ass'y 1.

Is the measure dvalue 

approx. 14.7 Vac ?

Replace the PWB with a new 
one.

Is the 2.5A fuse down ?

Replace the fuse and varistor 
with new ones.

Replace the ftransformer with
a new one.

19

YES

NO

NO

YES

The machine does not function
with remote controller 

Push button "O/I" on the 
wireless remote controller.

Is transmitting

indicator of the remote 

controller active ?

Is indicator lamp of

indoor unit proper ?

Replace the 
PWB  with a 
new one.

Does beep sound

from the indoor unit ?

Does connector

CN103 connect in place ?

Using a tester,
measure the voltage
between terminals
of resistor R30
on the PWB ass'y.

Push the button
"O/I".

Are batteries of the

wireless remote controller 

proper ?

Replace the batteries 
with new ones.

Replace the wireless
remote controller.

When the signal is

received, does the voltage

change ?

Replace the PWB with a new 
one.

PWB is normal.
Inspect the outdoor unit.

NO

YES

YES

NO

YES

Replace the display unit 
with a new one.

Connect the 
connector 
properly.

NO

YES

NO

20

The room is not cooled at all
or not cooled.
The compressor does not operate.

Measure resistances of TH1 and TH2.

The control circuit is normal.
   The compressor may be defective.
   The running capacitor may be defective.
   Refrigerant may be leaked.
   The outdoor fan motor may be defective.
   The outdoor fan motor capacitor may be defective.

Push the button "TEST RUN" on  
the indoor unit, and wait 3 minutes.

Is the voltage

between terminal "N" and

"1" of the terminal board the

power supply voltage ?

Are the resistances

conformed Fig. 1 ?

Replace the thermistor ass'y with a new one.

NO

YES

YES

NO

Replace the PWB ass'y with a new one.

0

20

40

60

80

100

120

140

160

180

K

0

10

20

30 40˚C

-10

CHARACTERISTIC OF TH1 & TH2

10˚C
30K 

Using a tester, measure voltage at
the terminals on the terminal board.