4T-V0-SF-1Q-EN
17
Ambient Temperature Sensor
(ODS)
These tables show the corresponding voltage,
resistance and temperature readings for the Ambient,
Temperature Sensor when measured across pins 5 &
14.
The power source for the Ambient, Coil and Suction
Temperature sensors is 3.2VDC
7(03 )
7(03 &
7+(50,6725
5(6,67$1&(
2+06
92/76 '&
Figure 7.
Ambient Temperature Sensor
Pins 5 & 14 (Black)
Integrated Variable Speed Control Board
J1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
The Ambient Temperature Sensor control has an NTC
thermistor input for sensing the outdoor air
temperature and has a nominal resistance of
§
10k
ohms at 75°F. The Ambient Temperature is measured
across pins 5 and 14. The minimum range required for
the Ambient Temperature Sensor is —40°F to 140°F.
A working Ambient Temperature Sensor is required for
the following:
•
Low Pressure Monitoring
•
Defrost (Heat Pump)
•
Comfort Control Display (Outdoor Air Temperature)
•
Aux Heat Control During Defrost (Heat Pump)
•
Aux Heat Lockout
•
Compressor Lockout (Heat Pump)
•
Oil Management
•
Humidifier Dew-Point Control
•
OD EEV Startup Position
•
ID EEV Startup Position
•
Pre Heating (Sump Heat)
•
Normal Operation of the ID and OD Fan
•
Diagnostics
S
SE
EN
NS
SO
OR
RS
S
Содержание ComfortLink II 4TTV0024A1000C
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