-
113
-
'11 • KX-T-166
Error code
Remote controller:
7-segment display:
LED
Green
Red
Indoor
Outdoor
Content
E7
-
Indoor return air
temperature thermistor anomaly (Thi-A)
Keeps flashing 1 time flash
Keeps flashing Stays Off
1.Applicable model
5.Troubleshooting
All models
Diagnosis
Countermeasure
Is
the connector of
thermistor connected
properly ?
Regarding the characteristics of
the thermistor, see the following chart
Temperature-resistance characreristics of indoor
return air temperature thermistor (Thi-A)
Are
the characteristics
of thermistor OK?
*1
NO
NO
YES
YES
*1 Check several times to prove any poor connection
15
10
5
0
10
30
40
20
50
Te
m
pe
ra
tu
re
th
er
m
is
to
r
re
si
st
an
ce
(k
Ω
)
Temperature (°C)
Insert the connector
securely
Replace thermistor
(Thi-A)
Replace indoor control
PCB
2.Error detection method
Detection of anomalously low
temperature (resistance) of
Thi-A
3. Condition of error displayed
• If -50°C or lower is
detected for 5 seconds
continuously, compressor
stops. After 3-minutes delay
the compressor is restarted
automatically, but if this
anomaly occurs again within
60 minutes after the initial
detection.
• Or if 48°C or higher is
detected for 5 seconds
continuously.
4.Presumable cause
• Anomalous connection of
indoor return air temperature
thermistor
• Indoor return air temperature
thermistor anomaly
• Indoor control PCB anomaly
Note: