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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

Boilers

Main Combi 24 HE - Hot water is lukewarm faulty water pressure switch 248063

Main Combi 24 HE - Hot water is lukewarm. Faulty water pressure switch 248063 

  • The radiators are getting hot when hot water tap is opened
  • Open a boiler casing and check the pressure differential valve spindle
  • If the spindle is not moving or not switching the micro-switch when hot tap is opened then replace the BAXI PRESSURE DIFFERENTIAL ASSEMBLY 248063

2015-05-23

Boilers

Ariston Microcombi 23 MFFI - Boiler flue replacement
  • ARISTON FLUE KIT (HORIZONTAL) STANDARD EFFICIENCY 3318000

2015-05-23

Boilers

Main Main Combi 25 Eco Elite - makes a loud noise when igniting or goes to a lockout Baxi Ingition/Ionisa

Main Combi 25 Eco Elite - makes a loud noise when igniting or goes to a lockout 

  • The flame sensing electrode has bend and dislocated 
  • It allows more gas enter the combustion chamber before ignition occurs
  • this causes the banging noise
  • Replace the ignition assembly
  • The replacement part is Baxi Ingition/Ionisation Kit 5130293

2015-05-21

Showers

Bristan Concealed thermostatic valve - thermostatic cartridge 00650410

BRISTAN Concealed thermostatic shower valve water temperature is not constant and fluctuates

2015-04-29

Boilers

Worcester Highflow 400 ELECTRONIC - Hot water temperature flactuation

Worcestr Highflow 400 ELECTRONIC combination free-standing storage boiler has a problem with a temperature of Hot water

  • Luke-warm temperatures in all operating modes
    • Modulating valve not opening.
    • Create a DHW demand and fully open a tap. Measure the voltage across the two tags on the modulating gas valve. Is it over 10Vdc?
    • Yes - Replace gas valve.
    • No - Check wiring to control board. If o.k. replace control board. It is wise to  also replace the modulating valve in case this was the cause of board failure.
  • Low DHW outlet temperature in DHW mode:
    • Scaled / inefficient water to water heat exchanger. Replace.
    • Replacement part number is DHW Heat Exchanger - 8 716 142 904 0
    • To replace the heat exchanger you will need the left hand side panel to come off

PDF - Worcester Highflow 400 ELECTRONIC - Hot water temperature flactuation - installation instructions

2015-04-26

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