Boiler shuts down and goes to lockout
| Fault | Fix |
|---|---|
| faulty pump (not at full capacity) | replace pump head |
| faulty fan (not at full capacity) | check / lubricate bearings |
| clear debris build up | replace fan assembly |
| blocked condensate pipe work/trap | clear blockage / ice plug or Increase pipe work fall |
| faulty ionisation electrode | check gap/wiring /damages |
| blocked heat exchanger (blocked with sludge) | replace or cleanse system |
| blocked primary filter on plate exchanger | clean debris from filter |
| faulty thermistor (losing calibration) | check / replace |
| faulty overheat cut out stat (losing calibration) | check / replace |
| faulty gas valve (faulty modureg / solenoid) | replace gas valve |
| blocked bypass pipe/ no bypass | adjust / install bypass |
| faulty air pressure switch (stuck in NO position) | replace air pressure switch |
| faulty low water pressure switch (losing calibration) | replace / clear blockages |
| excess air trapped within heat exchanger | Check / replace air vent |
Find A Gas Safe Heating EngineerOther Issues to check
- Noisy Fan
- Noisy Pump
- Noisy Hot Water Flow Switches
- Noisy Solenoid
- Burner Not Igniting
- Boiler Fan Problems
- Boiler Shuts Down
- Explosive Ignition
- Blocked Plate Exchanger