FULTON VSRT-60 - Page 82

TROUBLESHOOTING - 8
Fulton Ltd
8.1 TROUBLESHOOTING GAS BOILER
Problem
Cause
Remedy
3. Flame Failure During
Normal Run
1. Power Supply
Check fuse or circuit, reset or replace as necessary.
2. Gas Supply
Check gas pressure coming into the gas train, if low
contact the gas supplier.
Check the setting on the gas valve regulator, adjust as
required.
3. UV Detector
Check the detector is located correctly and clean.
4. Faulty Air Switch
Check for faulty air switch.
5. Bad Combustion
Check combustion readings.
4. Boiler fails to start
1. No Power
Check fuse or circuit breaker. Reset or replace as
necessary.
2. Pressure Control
Disconnect all power to the controller. Disconnect the
wires from the controller. Connect an ohmmeter between
the switch terminals. Lower the set point of the controller,
the switch should make. Raise the set point and re-check,
switch should break. if the controller operates improperly,
replace it.
5. Burner Cut-off
6. Gas supply
Check gas pressure coming into the gas train, if low
contact the gas supplier.
Check the setting on the gas valve regulator, adjust as
required.
7. Power Supply
Check fuse or Circuit breaker. Reset or replace as
required.
8. Ignition Electrodes
Check for cracks in porcelain, if found replace
the electrode. Check electrodes for carbon build-
up. Clean as required.
Check settings, adjust if required.
9. UV Detector
Check the detector is located correctly and clean.
10. Faulty Air Switch
Check for faulty air switch by jumpering the two air switch
leads at the terminal block. If the boiler starts and runs with
the jumper in place, the air switch should be replaced.
11. Faulty Level Control
Check the level control relays are securely mounted on
their bases. Check the power supply to each. The relays
may be checked by swapping positions and checking they
are both functioning.
12. Weak Pilot
Adjust to larger pilot by adjusting pilot gas pressure
regulator.
13. Transformer
Check voltage between transformer neutral at terminal
block to be sure transformer is being powered.
14. Burner Control
Check voltage between pilot terminal and neutral and
ignition terminal and neutral. Check must be made before
the control locks out on safety. If no power replace control.
15. Pressure Control
Disconnect all power to the controller. Disconnect the
wires from the controller. Connect an ohmmeter between
the switch terminals. Lower the set point of the controller,
the switch should make raise the set point and re-check,
switch should break. If the controller operates improperly,
replace it.
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VSRT-IOMM-2019-1
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