Additional information
99
System components
(continued)
Outdoor temperature sensor, Part No. 7820 148
Outdoor temperature sensor
Connection
Check sensor
1.
Remove plug
!
.
2.
Check the sensor resistance at
terminals 1 and 2 of the plug.
Outdoor
temperature in
ºC / ºF
Resistance
in
–10 / 14
0 / 32
20 / 68
480
500
546
3.
Disconnect cores from the sensor,
if actual values deviate severely from
the curve, repeat the sensor
measurement and compare with
the actual temperature.
4.
Depending on the result, replace
cable or outdoor temperature
sensor.
5.
Scan actual temperature.
Specification
Protection:
IP 43
Permissible ambient temperature
during operation, storage and
transport:
–40 to +70ºC
–40 to 158ºF
5285
941
-
0
1
Resistance
in
400
420
440
460
480
500
520
540
560
580
600
-40
-30
-20
-10
0
10
20
30
Outdoor temperature in ºC / ºF
-40
-22
-4
14
32
50
68
86
