ideal icos m3080 blowing

[paulwillo12]

hi

been haveing problem for last week on ideal icos. The problem is ongoing.

when the boiler first went of it was showing fault code to change dryfire thermistor which i changed and the boiler ran for around 30 secs then went of again showing fault code to change ch thermister which i changed along with wiring harness. same thing happend again. (ran for 30 secs approx and went of again showing fault code. changed pcb and worked fine again for 2 minutes. but again gone off. pump also bee changed. could do with some help if any1 has any ideas.

Thanks
paul

 

[petit_pablo]

water in system?

 

[paulwillo12]

yes. vented all rads, and pressured system 1.5 bar??

 

[petit_pablo]

Sounds like a circulation problem, heat not leaving the boiler & dropping it out. Does the boiler refire once its cooled a bit?