139
Checking the outside temperature sensor
A
1
2
1 2 3 4
B
B3
ATS B42/
B10
A
Outside temperature sensor
B
Junction box
100
10
-20 -10 0 10 20 30
Temperature in °C
6
8
20
40
60
80
200
Resistance in k
Ω
Sensor type: NTC 10 kΩ
1.
Pull plug "2K" from the control unit.
2.
Test the resistance of the outside
temperature sensor at the disconnec-
ted plug and compare it with the
curve.
3.
Where actual values deviate severely
from the curve values, disconnect the
wires at the sensor and repeat test on
the sensor itself.
4.
Depending on the result, replace the
lead or the outside temperature sen-
sor.
Troubleshooting
Repairs
(cont.)
5618 294 GB
Service
Summary of Contents for C3HA
Page 39: ...39 2 2x 1 Installation sequence Removing the front panel 5618 294 GB Installation ...
Page 42: ...42 1 2 Installation sequence Removing the transport brackets 5618 294 GB ...
Page 151: ...151 Checking and replacing resistors B C A Troubleshooting Repairs cont 5618 294 GB Service ...
Page 181: ...181 Parts lists Control unit assembly cont 5618 294 GB Service ...
Page 183: ...183 Parts lists Miscellaneous assembly cont 5618 294 GB Service ...
Page 191: ...191 5618 294 GB ...