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JamesI
JamesI, Developer
Category: HVAC
Satisfied Customers: 4512
Experience:  I have a portfolio of renovated houses, including DIY projects from installing bathrooms and new heating systems to rewiring.
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The thermostat for our Vaillant boiler has stopped working

Customer Question

Hi, the thermostat for our Vaillant boiler has stopped working and therefore we have no heating. We are getting a new one but in the mean time is there a way of overriding it? Thanks, Lioba
JA: What's the brand and model of your thermostat? How old is it?
Customer: Not sure how old, just trying to find it now
JA: What have you tried so far with your thermostat?
Customer: I can't find it as I have a small baby who may have put it somewhere?
JA: Anything else we should know to help you best?
Customer: the boiler is a valiant eco tech pro 24
Submitted: 9 days ago.
Category: HVAC
Expert:  JamesI replied 9 days ago.

Hi Lioba, thank you for choosing Just Answer, my name is ***** ***** I will help with your query today.

So you have a wireless thermostat?

Customer: replied 9 days ago.
Customer: replied 9 days ago.
Please answer via internet
Expert:  JamesI replied 9 days ago.

Ok what is the model of thermostat (Honeywell?)

Customer: replied 9 days ago.
How long before i can get a reply?
Customer: replied 9 days ago.
Hello?
Expert:  JamesI replied 9 days ago.

It can take some time for an expert to respond, can you cofirm if you have a honeywell thermostat?

Expert:  JamesI replied 9 days ago.

The first thing to do is go to the boiler can you see a small box on the wall with a wire going to it, it will likely have two lights and a button. This will be the wireless thermostat receiver, tell me what lights are showing on it.

Customer: replied 9 days ago.
Thanks
Customer: replied 9 days ago.
just trying to find it now
Customer: replied 9 days ago.
it says drayton digistat
Expert:  JamesI replied 9 days ago.

ok, I will do my best to respond when you reply but it can take some time.

Customer: replied 9 days ago.
the wireless receiver just has a red light on next to where it says alarm
Customer: replied 9 days ago.
It says override and has two bottons labelled 1 and 2 (learn mode)
Expert:  JamesI replied 9 days ago.

Ok press the override button once the light should come on, and the boiler should start.

Let me know how you get on.

Customer: replied 9 days ago.
You're not being clear. There are two buttons 1 and 2 next to override I don't know which one to press thanks
Expert:  JamesI replied 9 days ago.

One should be next to override, if your not sure press each one once.

Without knowing the model of the missing thermostat its hard to know the exact receiver you have fitted.

Customer: replied 9 days ago.
ok there's a green light next to on now
Expert:  JamesI replied 9 days ago.

Ok give it 30 seconds and let me know if the boiler starts up.

Customer: replied 9 days ago.
it hasn't unfortunately :-(
Expert:  JamesI replied 9 days ago.

What is showing on the boiler display and is the light still showing on the receiver?

Customer: replied 9 days ago.
green light on the receiver
Customer: replied 9 days ago.
it says 1.2 on the boiler and a green light
Expert:  JamesI replied 9 days ago.

Ok on the receiver did you press the 2 button?

Customer: replied 9 days ago.
both 1 and 2
Expert:  JamesI replied 9 days ago.

Ok if you press 1 and 2 again does the light go off?

Customer: replied 9 days ago.
hello, something seems to be up with this conversation.. technical glitch?
Customer: replied 9 days ago.
I said yes to the above question
Expert:  JamesI replied 9 days ago.

Ok I only got the message sent at 8:12 and 8:13.

Ok if you now press just button 1 and the light comes on what is shown on the boiler?

Expert:  JamesI replied 9 days ago.

If the boiler doesnt come on the override feature isnt working and you will need to replace the thermostat to get this working.

Is there anything else I can assist you with?

Customer: replied 9 days ago.
The light doesn't come on when I just press 1 so you think that the override feature isn't working?
Expert:  JamesI replied 9 days ago.

Correct if the boiler isnt starting there is a fault with the boiler getting the call for heat signal.

Customer: replied 9 days ago.
Okay, well I guess you can't help anymore then. Thanks
Expert:  JamesI replied 9 days ago.

You can get a new stat from screw fix today they are open to late.

See the one here.

Customer: replied 9 days ago.
Thank you, I will have to speak to my landlady again