Fulton VMP Hot Water (VMPW) - Manual (Page 45)

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SECTION 4
VMPW-IOM-2012-1001
MAINTENANCE
4-15
Troubleshooting Oil Fired Boilers
Problem Cause Remedy
Boiler will not maintain
pressure
Oil Supply
Check oil level in supply tank to be sure it is not
below intake line. Fill tank with oil. Check for
clogged nozzle. Clean or replace.
Oil Nozzle Check for clogged nozzle; clean or replace.
Oil Valve
Check voltage between oil valve leads at terminal
block to be sure oil valve is getting power.
Oil Pump
Check for clogged strainer or fi lter. Remove and
clean. Check for slipping or broken coupling.
Tighten or replace. Check for frozen pump shaft.
Replace.
Aquastat
If power is on, check across aquastats to verify
power through switch. If bad, replace.