Question about Heating & Cooling
just had same problem. this apprently happens if the power supply has been interrupted or you switch the power on and off.
• The boiler runs for 15 minutes at minimum heat output to fill the condensate trap, the display (K) alternates between -II-” and the boiler flow temperature. This occurs every time the mains supply has been interrupted.
Posted on Jan 07, 2009
it sounds like the system was not cleaned properly when the new boiler was fitted. all new boilers need to have the pipework flushed to remove any debris scale sludge and flux from the system. this is now usually done by a power flush which is basically a big pump mounted on a big bucket and it washes the dirt out of the pipework and collects in the bucket. if this is not done the dirt will block up the small passages in the heat exchanger. i suggest the system is cleaned flush and the heat exchanger changed to help protect the boiler a filter should be fitted (for example a magna clean) if the company who installed the boiler is corgi registered then they are liable for the damages. call corgi for advice.
Posted on Mar 26, 2009
Tips for a great answer:
Feb 09, 2016 | Water Water Heaters
Dec 31, 2014 | Bosch Water Heaters
Dec 02, 2014 | Water Heaters
Sep 19, 2014 | Water Heaters
May 13, 2010 | Bosch Water Heaters
Feb 01, 2010 | Desa International CBN30T Central Heating...
Feb 22, 2009 | Bosch Logixx WFT 2806 Front Load...
Jan 24, 2009 | Audiovox Bosch 718 World Cellular Phone
Jan 04, 2009 | Heating & Cooling
Sep 03, 2008 | Heating & Cooling
37 people viewed this question
Usually answered in minutes!