DOWNLOAD Sharp AY-M09 Service Manual ↓ Size: 1.69 MB | Pages: 40 in PDF or view online for FREE

Model
AY-M09
Pages
40
Size
1.69 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
ay-m09.pdf
Date
PREV: Sharp AY-AP24 (serv.man16) Service Manual / Technical Bulletin

Sharp AY-M09 Service Manual ▷ View online

21
AY-M09AE
AE-M18AE
TROUBLESHOOTING GUIDE OF CONTROL CIRCUIT
Note : Do not check two indoor units at the same time. Be sure to check them one by one.
Measure the secondary 
voltage of transformer.
YES
NO
YES
YES
NO
NO
The machine does not function
at all with remote control and
switches on the indoor unit. 
None of three LEDs is ON.
Using a tester, measure the 
voltage between terminal " 1 "
and " 2 " of connector CN2 on
P.W.B. ass'y.
Is the measured value 
approx. 16.0 Vac ?
Is the unit to unit cord
correctly connected ?
YES
Power supply
between "L" and "N" of
terminal board ?
Replace the indoor P.W.B. ass'y 
with a new one.
Is the 3A fuse down ?
Replace the fuse and 
varistor with new ones.
Using a tester measure the
voltage between "L" and "N" 
of terminal board on the 
outdoor unit.
Connect the unit to 
unit cord correctly.
Replace the transformer 
with a new one.
Check the electric circuit on 
the outdoor unit.
22
AY-M09AE
AE-M18AE
YES
NO
NO
YES
The machine does not function
with the remote control. 
Push the "OI" button on the wireless 
remote control.
Is transmitting
indicator of the remote 
control active ?
Is indicator lamp of
indoor unit proper ?
Is timer lamp of 
indoor unit flashing ?
Replace the Indoor 
P.W.B. ass'y with a new one.
Does beep sound
from the indoor unit ?
Does connector
CN101 & CN6 connect 
in place ? 
Using a tester,
measure the voltage
between terminals
of resistor R15
on the P.W.B. ass'y.
Push the button "OI".
Are batteries of the
wireless remote control 
proper ?
Replace the batteries 
with new ones.
Replace the wireless
remote control.
When the signal is
received, does the voltage
change ?
Replace the indoor P.W.B. ass'y 
with a new one.
P.W.B. ass'y is normal.
Inspect the outdoor unit or
refer to trouble suspension 
table.
NO
YES
YES
NO
YES
Replace the display unit 
with a new one.
Connect the 
connector 
properly.
NO
YES
NO
YES
Refer to trouble suspension 
table.
23
AY-M09AE
AE-M18AE
The room is not cooled at all
or not cooled.
The compressor does not operate.
Measure resistances of TH1 and TH2.
Push the "TEST" and  "AUX" on 
the indoor unit.
The room is not heated at all or not heated.
The compressor does not operate.
Same as "The room is not cooled 
at all or not cooled.
Refer to trouble suspension table.
Is the 3A fuse down ?
Replace the fuse and varistor 
with new ones.
NO
NO
YES
Replace the transformer 
with a new one.
YES
Three LEDs are all lit.
Is the measured value 
approx. 16.0Vac ?
Replace the PWB 
with a new one.
Using a tester, measure the 
voltage between terminal"1" and 
"2" of connector CN2 on the 
P.W.B. ass'y.
Measure the secondary 
voltage of transformer.
24
AY-M09AE
AE-M18AE
At Heating
Figure R-2. Flow of Refrigerant
REFRIGERATION CYCLE
Figure R-1. Refrigeration Cycle for AY-M09AE
At Cooling
Indoor unit A1
Indoor unit A2
Outdoor unit
Evaporator
Evaporator
Flare coupling
Flare coupling
Flare coupling
Flare coupling
Strainer
Condenser
Capillary
tube A
Strainer
Strainer
Compressor B
Capillary
tube A
Capillary
tube B
Flare coupling
Flare coupling
Flare coupling
Flare coupling
3
3
1
4
2
2
S
S
S
Strainer
S
Capillary
tube B
Accumulator
Reverse
valve
Compressor A
1
4
Accumulator
Reverse
valve
Page of 40
Display

Click on the first or last page to see other AY-M09 service manuals if exist.

RANDOM: