Table 4-2. Unit Troubleshooting - CONT.
TEST OR INSPECTION
BURNER FLAME FAILS (CONT).
Step 6. Loosen screw and remove cover from burner controller. Connect red (+) lead of multimeter with 0-25
microamp dc range to red spade tip of meter connector plug. Connect black (-) lead of multimeter to black
spade tip of meter connector plug. Insert meter connector plug in flame signal meter jack of burner controller.
Loosen nut and move flame detector until a steady reading of 3 1/2 (min.) to 7 1/2 (max.) microamps is
measured. Tighten nut.
If steady reading of 3 1/2 (min.) to 7 1/2 (max.) microamps cannot be obtained, replace flame
detector (page 4-161).
If steady reading of 3 1/2 (min.) to 7 1/2 (max.) microamps is found and flame continues to fail,
replace burner controller (page 4-275).