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Plumbing and Gas News

Practical tips for maintenance, service and repairs of plumbing and gas appliances

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Maintenance and Service


Vaillant Turbomax Plus 837E F.28 Gas valve 114189 Original Sigma 845

Vaillant Turbomax Plus 837E displays an error code F.28

  • If PCB is fine and the spark electrodes are fine the adjust the gas valve ignition burner pressure and operating burner pressure according to the manufacturer's instructions
  • If the pressure adjustments don't last and change by themselves then replace a gas valve
  • Gas valve replacement part is 114189 Original Sigma 845



Glowworm Betacom c24 - Faulty Diverter valve - 0020064049

Glowworm Betacom c24 radiators are getting hot when hot water is running and the hot water is lukewarm

  • Remove a diverter vale motor and try to push a spindle on the divert valve
  • If spindle doesn't come back or doesn't push then replace the diverter valve
  • The replacement part number is 0020064049 
  • While replacing the diverter valve check the secondary (hot water) heat exchanger for sludge. Clean if necessary to fix the problem with lukewarm hot water.
  • Sludge in the system is the main reason for a Diverter valve to fail
  • The whole system powerflush will be advisory.



Ideal Isar HE24 - Faulty Diverter valve (173624)

Ideal Isar HE24 boiler heating radiators when hot water is on.

  • If central heating is OFF but the radiators are still getting hot when hot water is running and hot water temperature is not very hot then the Diverter valve could be a problem
  • To test when the radiators are cold and boiler was not working for a while open hot water tap and touch the right hand-side 22mm pipe.
  • If the pipe is getting hot then replace the diverter valve.
  • Diverter valve kit part number is 173624 




Vaillant EcoTec plus 637 F.32 Faulty fan 193593

Vaillant ecoTec plus 637 system boiler doesn't work with a fault code F.32

  • The boiler fan is faulty fan 193593 or a Printed Circuit Board (PCB) is faulty
  • To test take the electrical connection out of the fan and measure DC voltage across Red and Blue wires. The voltage should be 22VDC
  • If no voltage present replace the PCB
  • If voltage is present then replace the fan



Porcelanosa Noken NK - CICE France OPTIMA 40 TH F Thermostatic Cartridge

Porcelanosa Noken NK - no hot water and the temperature handle is very stiff to turn.

  • Replace the thermostatic cartridge
  • The replacement part is: CICE France OPTIMA 40 TH F Thermostatic Cartridge
  • Isolate the water to the shower valve before replacing the cartridge


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