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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

Showers

Grohe faulty Kohler 78913 Thermostatic 3/4 inch Cartridge

The shower has not enough hot water

  • Adjust the thermostatic shower by removing and changing the position of the handle
  • If the adjustment doesn't help then replace the thermostatic cartridge
  • Kohler 78913 Thermostatic 3/4 inch Cartridge

2016-06-25

Boilers

Glowworm Betacom 24c - PCB 0020061654

GLOWWORM Betacom 24C 30C

  • The radiators are getting hot when hot water is operated
  • The diverter valve faulty OR
  • Diverter motor is faulty OR
  • PCB is faulty. Check voltage on a diverter motor
    • voltage 240V AC between 1 and 2 for heating
    • voltage 240V AC between 2 and 3 fir hot water
  • Replacement part PCB 0020061654 

2016-06-25

Thermal Store Cylinders

Pulsacoil 2000 - faulty T1 thermistor GT153

Pulsacoil 2000 produces no hot water.

  • The water tank is full and the cylinder is hot
  • The PCB flushes twice indicating a normal operation
  • To test open the hot water tap and measure the voltage to the pump
  • If there is no voltage replace the Thermistor T1
  • The part number is Gledhill GT153

2016-04-29

Boilers

Main Combi 24 HE - Intermittent hot water. Faulty diaphragm 5111137

Main Combi 24HE boiler is constantly leaking from the bottom

  • Hot water does't always come on. It seems like the boiler is temperamental and decides by himself whether to heat the water or not. 
  • The leak doesn't affect the system pressure
  • Check the nut and the diaphragm inside the flow-switch valve. If the diaphragm has holes in it then replace the diaphragm
  • The part number is 5111137
  • To replace isolate the water supply to the boiler.
  • No need to drain the central heating

2016-04-29

Underfloor Heating

PolyPlumb Leaking thermostatic vavle

Underfloor heating doesn't work.
Every time it switches on the fuse inside the wiring centre blows
Disconnect a wire from the pump and try again.
If the fuse doesn't blow then replace the pump
The pump damage might have been caused by a leak. 
In my case the manifold thermostat located right above the pump was leaking on it.
Replace the thermostatic vavle
The part number is Polyplumb Thermostatic Mixing Valve PB970029

2016-04-21

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