Questions? Please Contact Your Local Manufacturer’s Representative
SECTION 4 VTG-IOM-2016-1214 MAINTENANCE
4-9
TROUBLESHOOTING
PROBLEM CAUSE CHECK
Control does not illuminate Power supply Check fuse or circuit breaker. Reset or replace as
necessary.
Fan will not start High temperature is tripped 1. Reset switch
2. Replace switch
Low gas is tripped 1. Reset switch
2. Replace switch
High gas is tripped 1. Reset switch
2. Replace switch
UT32A incorrectly set/no heat Adjust UT32A
Flame detector has detected light/scanner 1. Identify light source, remove
2. Replace ame detector
Air switch is made when fan is not on 1. Reset switch
2. Replace switch
Blower contactor made when fan not on Replace motor contactor
Gas valve proof of closure defective Replace valve
Loose wire connection Check wiring
Pilot Fails Insucient gas supply 1. Verify the manuals shut o valves are open
allowing gas ow to the pilot tube.
2. Adjust incoming gas pressure to match the start
up report.
3. Adjust pilot gas pressure regulator to match the
start up report.
Pilot valve fails to open 1. Check pilot gas pressure at the burner.
2. Verify operation of the valve. If pressure does
not increase when the valve is supposed to open,
replace valve.
Air in pilot gas line Have the boiler attempt to light up to three times. If
the boiler fails to light, call Fulton.
Ignitor failure 1. Check the gap between the top of the electrode
and the pilot tube wall. The gap should be 1/16”
(1.59 mm). Adjust the gap.
1. Check for cracked porcelain. Replace electrode.
Combustion air not sucient 1. Verify the over burner pressure matches the start
up report. Adjust the servo setting.
2. Verify there is enough make up air in the room.
3. (For direct vent only) Verify venting is not
obstructed.
Flame Detector Defective 1. Visually verify the ame through the site glass.
2. Remove ame detector and visually verify ame
through the scanner tube.
3. Verify the ame detector eye is not dirty.
4. Replace ame detector.
To Next Page
Loading...
