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Symptom/action troubleshooting
Table 14. Symptom/action troubleshooting (Continued)
Symptom | Action |
|
|
Tracker controller displays | • Verify if the electrical power has been off for more than 1 week (the actual time |
the wrong date. | varies depending on storage temperature). |
| • Verify that jumper pin J1 on the main module is in place. |
| Note: The controller default date (displayed when the controller is initially powered up or whenever |
| the super capacitor is unable to back up the controller time) is January 1, 2000. |
|
|
Outdoor air temperature is | • Measure the resistance of the outdoor air temperature thermistor (preferably at |
not reading correctly. | the termination module). Check the measurement using Table 19 on page 71. |
| • Inspect the location of the outdoor air temperature sensor. It must not be |
| mounted in the sunlight or near another source of radiant heat. |
| Note: The outdoor air temperature sensor can be used for this purpose only. |
|
|
Ethernet link is not detected | • Verify that the correct type of cable is used. When communicating over a network, |
(on the Ethernet board, the | use a patch cable. When communicating to an Ethernet card on a lap top com- |
left LED is off) | puter, use a crossover cable. |
|
|
| 61 |
