I have an 8 yo halsted quattro gold boiler which has been playing up big time recently
since replacing circuit board it is (touch wood) behaving, however on the little display thing in the corner it says RND. never said before and not sure what it means, cant find in instructions or by googling-can anyone shed light on it?
nearly a year on the boiler still says RND on it. just had Brit Gas out to repair boiler (AGAIN) and the guy doesnt know what it means either-can't find any mention of it-so it's a mystery