Fault Finding Guide - BENSON 30 Installation And Operating Manual

6 Fault Finding Guide

Burner fails
to run
Fan starts
but burner
goes to
lockout
Doc No. 20-45-159 Page 56 of 60
No Power
No Demand
Check gas
supply
Check gas
supply
Check isolator
Check controls
Check control
box and burner
Ensure gas cock
is open
Air in gas feed
Faulty air
pressure switch
Faulty ignition
transformer
Faulty electrode
Faulty control
box
Check fuse
Burner lockout
Check set temp
Check on time
Check on time
Check air
pressure switch
Check flame
probe
Check burner
motor
Ensure start gas
valve opens
Purge air
Check as per
burner manual
Check
control box
Check HT lead
and connector
Check gap
Check insulation