Looking for some help/info, In between the timer going off mid morning and coming on again around tea time the dt92 indicates no signal, I'd like to know if that is normal, And also the call for heat flame sign comes on two seconds after the bd91 relay box green light comes on and the green light goes off two seconds before the call for heat flame goes off. also is tha normal operation. Changed the battries two weeks back as the heating wouldn't turn off but this don't seem right. But other than what I have just written the system is working coming on and off when it should and keeping the correct temp, I'am just a bit concerned. Any help or information would be very welcome Thank you, Cheers. Dean. Almost forgot system as been working fine last five years with no changes.