16
AH-M098E
AU-M188E
The room is not cooled at all
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.
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
Using a tester, measure voltage at
the terminals on the terminal board.
A
