Sharp AH-M098 Service Manual ▷ View online
13
AH-M098E
AU-M188E
AU-M188E
Table H-5
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Output for outdoor unit
Lamps
RED
YELLOW
Indoor
Fan motor
Louver
OFF
(Back to step 1)
OFF
OPEN
ON
D
OFF
Flickering
M
OFF
L
CLOSE
D
OFF
UL
OFF
(ON)
OFF
M
OFF
L
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
1
2
3
4
4
1
2
3
: 7˚C Room temp. 42˚C ON
: 7˚C (Room temp.) or (Room temp.) 42˚C OFF
: 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
: –2˚C (Pipe temp.) or (Pipe temp.) 42˚C OFF
: When the Power on start is effective, timer LED (yellow) is OFF.
ON
ON
ON
ON
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
ON
ON
ON
ON
4
: When Auto Restart is effective, Operation LED (red) is OFF, and timer LED (yellow) is ON.
ON
14
AH-M098E
AU-M188E
AU-M188E
TROUBLESHOOTING OF A CONTROL CIRCUIT
measure the secondary voltage
of transformer.
of transformer.
YES
NO
YES
NO
The machine does not function
at all with remote controller and
switches on the indoor unit.
at all with remote controller and
switches on the indoor unit.
Using a tester, measure the
voltage between terminal " 1 "
and " 2 " of connector CN2 of
Indoor's P.W.B. ass'y.
voltage between terminal " 1 "
and " 2 " of connector CN2 of
Indoor's P.W.B. ass'y.
Is the measured value
approx. 16.0 Vac ?
Replace the Indoor P.W.B. ass'y
with a new one.
with a new one.
Is the 2.5A fuse down ?
Replace the fuse and varistor
with new ones.
with new ones.
Replace the transformer with
a new one.
a new one.
Å@
15
AH-M098E
AU-M188E
AU-M188E
YES
NO
NO
YES
The machine does not function
with the remote controll.
with the remote controll.
Push the "OI(ON/OFF)"button on
the wireless remote controll.
the wireless remote controll.
Is transmitting
indicator of the remote
controller active ?
Is indicator lamp of
indoor unit proper ?
Replace the Indoor
P.W.B. ass'y with a new one.
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.
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 controll
proper ?
Replace the batteries
with new ones.
with new ones.
Replace the wireless
remote controll.
remote controll.
When the signal is
received, does the voltage
change ?
Replace the Indoor P.W.B. ass'y
with a new one.
with a new one.
P.W.B. ass'y is normal.
Inspect the outdoor unit.
Inspect the outdoor unit.
NO
YES
YES
NO
YES
Replace the display unit
with a new one.
with a new one.
Connect the
connector
properly.
connector
properly.
NO
YES
NO
AH-L086V:
"O/I" button
"O/I" button
AH-L086V: R30
16
AH-M098E
AU-M188E
AU-M188E
The room is not cooled at all
or not cooled.
The compressor does not operate.
or not cooled.
The compressor does not operate.
Measure resistances of TH1 and TH2.
Push the "TEST RUN" button on
the indoor unit, and wait 3 minutes.
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 Indoor's P.W.B. 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
Fig. 1
10˚C
30K
30K
Using a tester, measure voltage at
the terminals on the terminal board.
the terminals on the terminal board.
A
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