Section 3.3 - Troubleshooting Flowcharts; Introduction; No Transfer To Standby - Generac Power Systems 7 kW NG Repair Manual

TRANSFER SWITCH
Use the "Flow Charts" in conjunction with the detailed instructions in Section 3.4. Test numbers used in the flow charts correspond
to the numbered tests in Section 3.4. The first step in using the flow charts is to identify the correct problem on the following pages.
For best results, perform all tests in the exact sequence shown in the flow charts.
Problem 6 – With Controller in Automatic Mode and Utility Failed, Generator Runs but
TEST 20 – CHECK
VOLTAGE AT
TERMINAL LUGS
E1 & E2
GOOD
TEST 21 – CHECK
MANUAL TRANSFER
SWITCH OPERATION
GOOD
TEST 22 – CHECK
23 AND 194
CIRCUIT
GOOD
TEST 23 – TEST
TRANSFER
RELAY
GOOD
TEST 24 – CHECK
STANDBY CONTROL
CIRCUIT
PART 3

INTRODUCTION

Transfer to Standby Does Not Occur
TEST 30 – CHECK
BAD MAIN LINE CIRCUIT
BREAKER
BAD
BAD
BAD
BAD
FIND CAUSE OF NO AC OUTPUT
BAD
TO TRANSFER SWITCH FROM
GENERATOR
REPAIR OR REPLACE MECHANISM
REPAIR OR REPLACE AS NEEDED
REPLACE
REPAIR AS NEEDED
Section 3.3
Troubleshooting Flowcharts
Page 73