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Single Radiator Not Working

  • Bleed the radiator.
  • Bottom of the radiator cold – could be sludge in the radiator. Disconnect the radiator and flush out with a garden hose. If flushing the radiator does not work add a ‘chemical cleanser’ to the central heating system and leave for 3 days.
  • Is the thermostat valve open?
  • Is the lockshield valve on the radiator open? The lockshield valve should be open. The lockshield valve is usually at the opposite end of the radiator to the thermostat.


Judge Electrical Limited
15 Mulberry Court, Huntington, York, YO32 9TU
Telephone 01904 764845 (Landline), 07919 033113 Mobile)
Email info@judgeelectrical.co.uk
VAT No. 852917405. Company Number 6359328