Generac Power Systems 10 kW LP, 13 kW NG manual Controller Switch BAD Replace Controller Assembly

Section 4.3

Troubleshooting flow charts

Part 4

DC control

Problem 15 – Engine Will Not Crank When Utility Power Source Fails

*8 kW system ready
light will be flashing
VERIFY UTILITY
		OFF
SOURCE IS “OFF”*
	ON
TURN “OFF” -
RETEST

REPLACE CONTROLLER

ASSEMBLY BAD

		TEST 56 – CHECK		SWITCH IS				TEST 57 – TRY A
		POSITION OF		IN “AUTO”				MANUAL START
	AUTO-OFF-MANUAL
		SWITCH
								ENGINE DOES
									NOT CRANK		ENGINE
											CRANKS
		SWITCH IS “OFF”
							GO TO PROBLEM 16
		SET TO “AUTO” -
		RETEST		REPLACE CONTROLLER
										8 kW
								ASSEMBLY
		TEST 59 – CHECK				TEST 58 – TEST
		AUTO OPERATION			AUTO-OFF-MANUAL					10 kW - 20 kW
		OF CONTROLLER					SWITCH
								BAD
REPLACE CONTROLLER
			ASSEMBLY

Problem 16 – Engine Will Not Crank When AUTO-OFF-MANUAL Switch is Set to “MANUAL”

TEST 60 – CHECK

7.5AMP FUSE BAD

REPLACE

*8 kW - battery led should be off

GOOD

TEST 62 – CHECK

GOOD

TEST 61 – CHECK

GOOD

WIRE 56 VOLTAGE

BATTERY

RECHARGE /

BAD

TEST 63 – CHECK

BAD

REPLACE

STARTER

CONTACTOR RELAY

(V-TWIN ONLY)

REPLACE

8 kW

CONTROLLER

BAD

ASSEMBLY

BAD

GOOD

TEST 59 – TEST

10 kW - 20 kW

AUTO-OFF-MANUAL

SWITCH

REPLACE

NOTE: If a starting problem is encountered, the engine itself should be thoroughly checked to eliminate it as the cause of starting difficulty. It is a good practice to check the engine for freedom of rotation by removing the spark plugs and turning the crankshaft over slowly by hand, to be sure it rotates freely.

WARNING: DO NOT ROTATE ENGINE WITH ELECTRIC STARTER WITH SPARK PLUGS REMOVED. ARCING AT THE PLUG ENDS MAY IGNITE THE LP OR NG VAPOR EXITING THE SPARK PLUG HOLE.

GOOD

TEST 65 – TEST

STARTER MOTOR

BAD

TEST 64 –

CHECK STARTER

CONTACTOR

GOOD

REPLACE BAD

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