Chapter 2 Profire V Burner
2-50 750-177
N. Troubleshooting
PROBLEM SOLUTION
Burner Does Not Start 1. No voltage at program relay pwoer input terminals.
a. Main disconnect switch open.
b. Blown control circuit fuse.
c. Loose or broken electrical connection.
2. Program relay safety switch requires resetting.
3. Limit circuit not completed - no voltage at en
d of limit circuit program relay termi-
nal.
a. Pressure or temperature is above setting of operation control.
b. Water below required level.
•Low-water light (and alarm horn) should indicate this condition.
•Check manual reset button, if pro
vided, on low-water control.
c. Fuel pressure must be within settings of low pressure and high pressure
switches.
d. Check burner air proving switch and high-fire limit switch.
4. High or low gas pressure - investigate and repair.
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