No heating because of BDR91?

the first i tried turning it and the thermostat off for a while then on again. does that count? would BG man have done this?

dont know what signal level check would be. i have thermostat at 30c and on table 1 metre from boiler
 
SE london near tower bridge. not sure im allowed to be more specific

thanks echo will run through this all
 
The blue wire in terminal B looks a bit dodgy.

Turn the power off and check if it is properly in the terminal and the terminal is tight. (Might as well check all terminals while the power is off.)

Does the green light stay on when the relay trips off?

What are the four relay wires connected to at the other end?
 
Echo the husky said:
Try here.
Click to expand...

and note one suggested "fix"

Please check for positioning of the room unit and the relay, eg not near other wireless devices or large metal objects. If the unit worked fine for some time then developed this issue please check for new items introduced into the vicinity and check batteries in room unit. If symptom repeats conduct a signal strength check.
Click to expand...

Large metal object ? boiler ?

There is too much confidence placed on wireless systems operating on Licence Exempt frequencies.
 
As D_Hailsham has already asked, have you used the button on the receiver to turn the heating on and what is the green light doing when the heating should be on?
 
That Looks like a Honeywell RF Pack 5. If so, the BDR is optional. Which Zone is it supposed to be operating? OR; is it set up as the boiler demand relay? I suspect the installer got himself a little confused.
 
Dan Robinson said:
Go away Bernard - you are of no help to anyone.
Click to expand...

Dan Robinson said:
https://drive.google.com/file/d/0B6V-Gyu0ykkgaHFmOFl5TjVuVUU/view?usp=sharing
Click to expand...

also mentions metal objects blocking the wireless signal. Doesn't mention other transmissions from nearby ( and possibly non compliant ) transmitters which can also block communication between thermostat and relay / boiler. The system does have a one hour time out for lost communication before indicating loss of comms and going into a fail safe mode.. This does suggest that loss of comms is possible for several minutes at a time.
 
Dan Robinson said:
Ffs you moron. It's not a transmission problem. It's a wiring issue or failed valve.
Click to expand...

Then why did you say earlier

Dan Robinson said:
Bdr too close to the boiler.
Click to expand...

Any variable speed motors ( fans or pumps ) involved that are close to the BDR ? They create wide spectrum RF energy. very low level but more enough to swamp a receiver in close proximity to motor(s) when the signal from the transmitter is low signal strength at the receiver.
 
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