059705–00 REV. B
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TROUBLESHOOTING
TESTING THE SENSORS
The Genesis Heat-Timer
®
sensors (Outdoor and Heating System) record the temperature
where they are located. Before assuming a sensor is not working, it is important to get an
accurate reading at the sensor location. If the outdoor sensor is affected by sun, exhaust
fans, open doors, or windows, the reading may vary significantly from the actual outdoor
temperature. Similarly, if the heating system sensor (HSS) does not appear to be reading
correctly, check if it is located correctly.
To perform the test, you will need a digital multi-meter capable of reading resistances.
The Heating System Sensor and Outdoor Sensor temperatures are constantly displayed on
the Genesis Heat-Timer
®
. Remove the outdoor sensor wires from the OUT Temp terminals
(18 and 19), or the heating system sensor wires from SYS Temp terminals (16 and 17). Use
the multi-meter to take a resistance reading across the detached wires going to the sensor.
If the reading shows:
•
OPEN or resistance is higher than the values on the adjacent chart—Check the wires
going to the sensor. They may have been broken or become disconnected. If the
wires are fine, check the resistance at the sensor itself. If the resistance is still open,
the sensor has been damaged and needs to be replaced.
•
SHORT or resistance is lower than the values on the adjacent chart—Check the
wires going to the sensor. They may have become shorted together in the run of the
wire. If not, check the resistance at the sensor itself. If there still is no resistance, the
sensor has been damaged and needs to be replaced.
•
Resistances from 187 ohms to 117720 ohms—Find the temperature that corresponds
to the resistance value on the chart. If the sensor appears to be outputting correctly,
check that the wires were properly connected to the Genesis Heat-Timer
®
inputs. If
the sensor is not outputting correctly, take another reading at the sensor itself. If
this is correct, the problem is in the wiring between the sensor and the Genesis
Heat-Timer
®
. Otherwise, the sensor has been damaged, and should be replaced.
TEMPERATURE SENSOR CHART
TEMPERATURE
(IN DEGREES °F )
VALUE
(IN OHMS)
-30
117720
-20
82823
-10
59076
0
42683
10
31215
20
23089
25
19939
30
17264
35
14985
40
13040
45
11374
50
9944
55
8714
60
7653
70
5941
80
4649
90
3667
100
2914
110
2332
120
1879
130
1524
140
1243
150
1021
160
842
170
699
180
583
190
489
200
412
210
349
220
297
230
253
240
217
250
187