Multiquip MQP20P manual Troubleshooting MEC20 Controller - continued, troubleshooting controller

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