VMP-IOMM-2018-2
Fulton Ltd
Page 59
TROUBLESHOOTING - 6
SECTION 6 -
TROUBLESHOOTING
6.1
TROUBLESHOOTING
GAS BOILER
Problem
Cause
Remedy
1. Ignition Failure
1. Gas supply
Check for gas pressure and intermittent supply problems.
2. Power Supply
Check fuse or circuit breaker.
Reset or Replace as required.
3. 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.
4. Transformer
Check voltage between transformer leads at terminal block
to be sure transformer is live.
5. UV Detector
Check for ignition interference.
6. Burner Control
Check voltage between ignition terminal and neutral, this
check must be made before the control locks out. If no
power, replace the control.
7. Air Settings
Check main air adjustment and secondary air adjustment.
8. Faulty Air Switch
Check for faulty air switch.
9. Gas Valve
Check filters in the valve block. Clean as required.
10. Loose wire connections
Check connections to all components.
2. Flame Failure During
Start-up
1. Gas supply
Check for gas pressure and intermittent supply problems.
2. Power Supply
Check fuse or circuit breaker.
Reset or Replace as required.
3. Air Settings
Check air adjustment. Air may be blowing flame away from
the UV detector. Open primary air until fire brushes the
furnace wall.
4. 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.
5. UV Detector
Check the detector is located correctly and clean.
6. Burner Control
Check voltage between ignition terminal and neutral, this
check must be made before the control locks out. If no
power, replace the control.
7. Loose wire at fuel valve circuit. Tighten wiring connections.
8. Contact open on Air Switch
Adjust to the correct setting.
9. UV Detector wiring reversed at
control box.
Change to the correct terminals.
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