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Gas Appliances

Exam revision materials for Plumbing Level 2&3 and ACS Gas Safety test

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Gas Cookers

Fault Finding

Ignition System Faults

  • Blockage of jets or burner ports due to
    • Corrosion
    • Deposits
    • Burnt on oils and fats
    • Moisture

Blockages Problems

Unstable Flame

Thermostat Problems

Stiff Control Tap

Oven Burner Problems

Lid Safety Shut-off Valve Problems

< Go Back2013-04-03

Pressure Drop

  1. If it takes more than 1 day pressure to drop than a leak sealer will stop a small leak in the system. Just inject it into the central heating system like it says in the instruction
  2. The diaphragm in the expansion vessel has split and expansion vessel need to be replaced - water will discharge from pressure discharge pipe under the heating conditions
  3. For combination boilers it could be a plate heat exchanger need to be replaces
  4. The pressure relieve valve can be faulty - water will constantly discharge from pressure discharge pipe
  5. If the pressure drops very quickly than there is a big leak and pipework need to be inspected
< Go Back2013-04-02