Generac Power Systems 7 kW NG User Manual

PART 3
TRANSFER SWITCH
Page 74
Section 3.3
Troubleshooting Flowcharts
Problem 7 – In Automatic Mode, Generator Starts When Loss of Utility Occurs, Generator
Shuts Down When Utility Returns But There Is No Retransfer To Utility Power
OR
Generator Transfers to Standby During Excercise or in Manual Mode
BAD
BAD
REPAIR OR REPLACE AS NEEDED
REPAIR OR REPLACE AS NEEDED
REPLACE
GOOD
GOOD
GOOD
TEST 21 – CHECK
MANUAL TRANSFER
SWITCH OPERATION
TEST 25 – CHECK
WIRE 23
BAD
TEST 26 – CHECK
UTILITY CONTROL
CIRCUIT
TEST 23 – TEST
TRANSFER
RELAY
BAD
REPAIR OR REPLACE MECHANISM
REPLACE CONTROLLER
CORRECT UTILITY
SOURCE VOLTAGE
REPLACE
GO TO PROBLEM 6
REPAIR OR REPLACE WIRE
N1A/N2A BETWEEN N1/N2
LUGS AND FUSE HOLDER
REPAIR N1/N2 OPEN WIRING
BETWEEN TRANSFER
SWITCH AND GENERATOR
Problem 8 – Unit Starts and Transfer Occurs When Utility Power Is On
TEST 33 –
CHECK N1 & N2
VOLTAGE
TEST 34 – CHECK
UTILITY SENSE
VOLTAGE
TEST 35 –
CHECK VOLTAGE
AT TERMINAL
LUGS N1 & N2
TEST 28 –
CHECK FUSE
F1 & F2
GOOD
GOOD
GOOD
GOOD
BAD
BAD
BAD
BAD

Generac Power Systems 7 kW NG Specifications

General

Brand	Generac Power Systems
Model	7 kW NG
Category	Portable Generator
Language	English