Thermostat Problem

[Chewy56]

Is this as far as I can take this post Thermostat Problem | on ElectriciansForums - https://www.electriciansforums.net/threads/thermostat-problem.215331/

I have no intention of doing any electrical work myself.

 

[westward10]

If you want to take it further reply in that thread.

 

[Alk]

Hi @Chewy56
I cannot reply to your original thread - it says that I have insufficient privileges to do so - I cannot post anywhere in that forum/start a new thread (what's up with that? - have you got the same problem, hence why you started this new thread?).

I just wanted to say that if there is a green light on your BDR91 receiving box (which is next to the boiler) then it means that either: 1. you have pressed the little grey button on the receiving box manually yourself (you only ever do this in a situation when there is a lack of communication) or 2. The receiver is communicating with the DT92E Thermostat correctly.
The green light indicates that the receiving box has switched the boiler on to operate, so if the light is on, then it is communicating with the thermostat if you otherwise haven't touched it.

If the thermostat is in the room directly below the BDR91 receiving box then there should be no issues with wireless communication.
When you change the batteries, there is no need to re-link the devices.

In summary, you changed the batteries (it sounds like it needed new ones) and it is working again.
To confirm that everything is working correctly:
First make sure that the green light on your BDR91 is off.
Then on the DT92E thermostat, increase the temperature to 30 degrees Celsius (for testing, it must be way way above your normal set room temperature).
At this point you should see that the thermostat display pops up with a "radio" signal of dashes, along the bottom. This means that the thermostat is transmitting a signal to the BDR91 box.
At this point, your BDR91 receiving box light will go green and the boiler will switch on and your radiators will heat up.
Be aware that sometimes there is a slight delay between the BDR91 light going green and the boiler switching on, even though there is a radio signal on the thermostat display. This is due to the way that the Honeywell thermostats work to achieve energy efficiency - it is not a fault.
If all is in order, on the DT92E thermostat, decrease the set temperature back to your normal room temperature that you are comfortable with.
The green light on the BDR91 box should now go off.

 

[Chewy56]

Hi @Chewy56
I cannot reply to your original thread - it says that I have insufficient privileges to do so - I cannot post anywhere in that forum/start a new thread (what's up with that? - have you got the same problem, hence why you started this new thread?).

I just wanted to say that if there is a green light on your BDR91 receiving box (which is next to the boiler) then it means that either: 1. you have pressed the little grey button on the receiving box manually yourself (you only ever do this in a situation when there is a lack of communication) or 2. The receiver is communicating with the DT92E Thermostat correctly.
The green light indicates that the receiving box has switched the boiler on to operate, so if the light is on, then it is communicating with the thermostat if you otherwise haven't touched it.

If the thermostat is in the room directly below the BDR91 receiving box then there should be no issues with wireless communication.
When you change the batteries, there is no need to re-link the devices.

In summary, you changed the batteries (it sounds like it needed new ones) and it is working again.
To confirm that everything is working correctly:
First make sure that the green light on your BDR91 is off.
Then on the DT92E thermostat, increase the temperature to 30 degrees Celsius (for testing, it must be way way above your normal set room temperature).
At this point you should see that the thermostat display pops up with a "radio" signal of dashes, along the bottom. This means that the thermostat is transmitting a signal to the BDR91 box.
At this point, your BDR91 receiving box light will go green and the boiler will switch on and your radiators will heat up.
Be aware that sometimes there is a slight delay between the BDR91 light going green and the boiler switching on, even though there is a radio signal on the thermostat display. This is due to the way that the Honeywell thermostats work to achieve energy efficiency - it is not a fault.
If all is in order, on the DT92E thermostat, decrease the set temperature back to your normal room temperature that you are comfortable with.
The green light on the BDR91 box should now go off.

Many thanks for your reply. My original question on the other board was:
Hi, First post and would be very grateful for any help.

I have a Honeywell DT92E Thermostat that is only intermittently communicating with the wireless relay box BDR91.

There is a full green light on the BDR91 and if I switch the Potterton programmer on HW and CH the radiators come on and switch off when it it reaches the temperature on the DT92E after that any communication stops. The BDR91 is in a very inaccessible place. Is there any way I can sort the problem out on the DT92?. I have seen a video showing how to rebind the two but I don't think I will be able to get to it!'

I will go through your reply today and let you know how I can on.