troubleshooting (controller)
Troubleshooting (MEC20 Controller) - continued
Symptom | Possible Problem | Solution | |
| Improper calibration? | Verify that the controller's analog input has been properly | |
| calibrated as per manual instructions. | ||
Engine temperature or oil |
| ||
| Verify that the engine sensor wiring is correct (Note: Use factory- | ||
pressure display is reading | Incorrect engine sensor wiring? | ||
supplied engine sensors only.) | |||
incorrectly |
| ||
Battery not properly grounded? | Verify that the battery supply DC negative conductor is properly | ||
| |||
| grounded to the engine block (i.e. to a common ground point.) | ||
|
| ||
|
| Check that the wiring from the controller terminal #37 and | |
| Incorrect wiring? | #38 to the engine mounted sender is correct (i.e. wiring is | |
Engine temperature or oil |
| not open or shorted). | |
| Verify that the engine mounter senders have correct | ||
displays "9999" |
| ||
Incorrect resistance? | resistance reading for corresponding input temperature or | ||
| |||
|
| pressure (refer to Controller manual). | |
| Improper calibration? | Verify calibration. | |
Engine alarms on high |
| Check that the wiring from the controller terminal #37 and | |
Incorrect wiring? | #38 to the engine mounted sender is correct (i.e. wiring is | ||
engine temperature or low | |||
| not open or shorted). | ||
oil pressure when engine |
| ||
| Verify that the engine mounter senders have correct | ||
is operating within normal |
| ||
Incorrect resistance? | resistance reading for corresponding input temperature or | ||
limits | |||
| pressure (refer to Controller manual). | ||
|
| ||
Keys on faceplate do not |
| Verify that the interconnecting ribbon cable between the | |
Incorrect connection? | faceplate and the main printed circuit board is connected | ||
operate. |
| correctly. | |
|
|
MQP20P STANDBY GENERATOR • operation and parts manual — rev. #1 (11/28/11) — page 39