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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

Ariston Microgenus HE Combi Boiler - Fault A01 faulty PCB replacement 65103422 (Replaces 65102571)

Ariston Microgenus HE Combi Boiler  works for 7 seconds and then goes to a lock-out with a fault code A01 on a screen

  • Turn the central heating or hot water on
  • remove the front cover and watch the spark electrodes
  • If they continue to spark after the flame is present then check the flame sensing electrode (the left hand side one)
  • if it looks intact then check the wire from it to PCB for continuity with a multimeter
  • If there is a continuity then  replace a PCB
  • The replacement part number is ARISTON PCB (PRINTED CIRCUIT BOARD) 65103422 (REPLACES 65102571) (MICROGENUS HE 24,28 & 32)

 

PDF - Ariston Microgenus HE Combi Boiler - Fault A01 faulty PCB replacement 65103422 (Replaces 65102571) - installation instructions

2013-01-27

Boilers

Potterton Prima 50C - Boiler goes to lockout 2 times a day

If it locks out in the morning it may be the spark electrode that gets damp overnight if it has a hairline crack in it, it will usually recover once it has some voltage put through it, hence it lighting on the second attempt, and sometimes the gas control valve sticks. If it is overheating then I would usually check the system and bypass first, and I would replace the overheat and boiler stat sensors before shelling out for a costly pcb.

Boiler manual PDF

2013-01-27

Boilers

Main System HE - Flame goes off after 10 seconds.

The PCB is faulty (5112380) or flame sensing electrode is not positioned correctly or broken. If there is 1µA current on a sensing electrode, then PCB need replacement. Otherwise the sensing electrode. Main technical support number is 0844 871 1570. The gas valve is faulty if when boiler is in the lock out there are 20 VDC across two black wires for the main solenoid valve.

Boiler manual PDF.

2013-01-23

Showers

Crosswater SME-029 Thermostatic shower - Temperature and pressure problem

Crosswater Designer wall outlet hose attachment, Thermostatic shower valve with bath spout and diverter or shower option SME-029. A problem with water temperature. The water is too cold when you turn the temperature to maximum. Termostat adjustment doesnt make water any wormer. Cartridge have to be replaced. The manufacturers website. The cartridge part number is SC50-T20 and it can be ordered from here.

2013-01-23

Hot Water Cylinders

Megaflow The cylinder is not heating up Immersion Heater replacement

Hot water cylinder stopped working and you dont have any hot water. Check first an immersion heater fuse on a consumer unit. Is a cable life to the heater? If not it might be on economy 7 supply. Is there 240V between blue and brown? Is there resistance around 190 Omhs?

2013-01-20

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