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REPLACE
CIRCUIT
BOARD
CORRECT
UTILITY
SOURCE
VOLTAGE
REPLACE
GO TO PROBLEM 7
REPAIR OR
REPLACE
WIRING
REPAIR OR REPLACE WIRE
N1A/N2A BETWEEN N1/N2
LUGS AND FUSE HOLDER
REPAIR N1/N2 OPEN WIRING
BETWEEN TRANSFER
SWITCH AND GENERATOR
Problem 10 – Unit Starts and Transfer Occurs When Utility Power Is On
8 kW: Green LED Flashes
10-20 kW: Status – Utility Lost
TEST 37 – CHECK
UTILITY SENSING
VOLTAGE AT
CIRCUIT BOARD
TEST 36 –
CHECK N1 & N2
VOLTAGE
TEST 38 – CHECK
UTILITY SENSE
VOLTAGE
TEST 39 –
CHECK VOLTAGE
AT TERMINAL
LUGS N1 & N2
TEST 34 –
CHECK FUSE
F1 & F2
GOOD
GOOD
GOOD
GOOD
GOOD
BAD
BAD
BAD
BAD
BAD
Page 72
PART 3
TRANSFER SWITCH
SECTION 3.3
TROUBLESHOOTING FLOW CHARTS