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TROUBLESHOOTING AND REPAIR | |||||||
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| RETEST AFTER REPAIR |
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| Test | Required Action | Expected Results | |||
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| Steps |
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| Lft.display | Rt. display | ||||
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46 | This will only appear if a potentiometer is still connect- | dcon | |||||
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| ed to the |
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| appears, disconnect the potentiometer from the |
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| amphenol connector. |
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47 | Test steps | GAS | On | ||||
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| noid. If an oscilloscope is available, verify that the cur- |
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| rent flowing through the gas solenoid is zero before the |
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| solenoid is energized, increases to approximately |
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| 700mA (pull in current), remains at 700 mA for approxi- |
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| mately 150 msec, and decreases to approximately |
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| 200mA (hold current). Press the local/remote pushbut- |
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| ton to turn the gas solenoid on. |
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<- 150msec - >
700mA
200mA |
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0mA |
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+ |
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| Or, the signal can be verified by measuring 12.3 VDC |
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| positive) |
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48 | Press the local/remote pushbutton again to turn the gas GAS | OFF |
| solenoid off. |
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After completing all of the above tests, the following will appear on the display.
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| Verify this message appears for approximately 3 sec- | DIAg | PASS |
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| onds |
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