DIY Doctor

Main navigation

Central Heating fault with Potterton Suprema

Postby jmdunman » Fri Jan 06, 2023 8:50 am

]I've a 20 year old Potterton Suprema 30. The PCB has been changed about 4 times the last in 2017. The system is 3 zones - up heating, down heating and hot water. After turning down the thermostats to 15 for a week then returning them to 20 the boiler now ceases to function properly. It goes through the start up sequence ie call for heat - air proving and ignition - burner on but after 2-3 minutes there is ignition lockout for 2-3 minutes before the whole sequence starts again without intervention by me. The system is correct at 1 Bar pressure. Boiler thermostat is set to 90% of max. The pump seems to be working. Any ideas please. John.
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Thu Sep 03, 2009 10:41 am


Simply Build It

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics