Generac Power Systems 5410, 5412, 5411, 5413 continued, Underspeed Warning - 4 Flashes on SW1 LED

Section 6

TROUBLESHOOTING FLOWCHARTS

Problem 2 – Generator Produces Zero Voltage or ResidualVoltage (5-12VAC)

(continued)

TEST 10 –

CHECK ROTOR

ASSEMBLY

TEST ROTOR INSULATION, PAGE 14

TEST 4 – PERFORM

FIXED EXCITATION TEST

E

/ ROTOR AMP DRAW

CHECK VOM FUSES –

REPLACE FUSES

VERIFY AMP METER

G

– THEN RE-TEST

FUNCTIONS

F

(PERFORM BOTH TEST 7 & 8)

BAD

TEST 6 – TEST

TEST 7 – CHECK

REPAIR

EITHER OR

STATOR DPE

SENSING LEADS /

BOTH BAD

OR

WINDING

POWER WINDINGS

REPLACE

REPAIR

OR

REPLACE

GOOD

GOOD

INSULATION

BAD

RESISTANCE

BAD

TEST, PAGE 13

Problem 3 – Excessive Voltage/Frequency Droop When Load is Applied

(Underspeed Warning – 4 Flashes on SW1 LED)

TEST 12 – CHECK LOAD VOLTAGE & FREQUENCY

GOOD

END TEST

BAD

TEST 2 – CHECK STEPPER MOTOR CONTROL

TEST 13 – CHECK
LOAD WATTS &			NOT OVERLOADED
	AMPERAGE
		OVERLOADED	REDUCE LOAD

REPLACE

GOOD PRINTED CIRCUIT GO TO PROBLEM 8 BOARD

Page 27