Worcester Boiler Issue - No Central Heating

[lotusldn]

Hi I am trying to help a friend out with a Boiler Issue. We don't know the model number of the Boiler however I have attached images. There is hot water but the heating has not worked since May and multiple engineers have not been able to resolve the issue. If anyone has any ideas no matter how miniscule, I would be so grateful. I will also include an image of the Thermostat.

The boiler doesn't have any dials on the actual boiler so it's really difficult to understand what is going on.

 

[jj4091]

The programmer shows the hot water as on but the heating is off have you tried pushing the overide button ?

 

[RandomGrinch]

From the photos, the only wiring around the boiler appears to be for power and a Mainslink-pro.
This is only guesswork, but suggests that the switched live to the boiler may be provided by the mainslink unit.
As the hot water is working, that implies that the boiler side of things is working correctly - the mains link is receiving an RF signal to turn on the boiler, and the boiler is responding.
So, where is the other Mainslink unit? Is there a separate hot water tank, are there valves and a wiring centre with it?

Secondly, the Digistat SCR receiver is powered off - this was common wiring with old manual stats; they would not receive power until the programmers time slot was running.
This is not great for a wireless stat - it means the receiver has to power on and the RF link has to be reinitiated every time the time slot comes around.
It is far better to supply a permanent live to the receiver (maintaining the RF connection) and connect the switched live back to the programmer/wiring centre.

 

[lotusldn]

Hi thank you for replying to me. I am attaching the other pictures now.

 

[lotusldn]

The programmer shows the hot water as on but the heating is off have you tried pushing the overide button ?

Hi, the over ride isn't working. No lights come on.

 

[RandomGrinch]

Hi, the over ride isn't working. No lights come on.

The override on the Honeywell home programmer, the override on the Digistat receiver, or both?

 

[lotusldn]

The override on the Honeywell home programmer, the override on the Digistat receiver, or both?

Hello, the Digistat receiver over ride isn't working.

 

[RandomGrinch]

Hello, the Digistat receiver over ride isn't working.

As I said earlier...

the Digistat SCR receiver is powered off - this was common wiring with old manual stats; they would not receive power until the programmers time slot was running.

With the override running on the Honeywell home, or the timer set to 'Cont'inuous, does the Digistat receiver power up?
If it then does power up, and you press override on the receiver, does the heating come on?

 

[martygturner]

The honeywell shows the heating is in off...set it to cont.

 

[lotusldn]

As I said earlier...

With the override running on the Honeywell home, or the timer set to 'Cont'inuous, does the Digistat receiver power up?
If it then does power up, and you press override on the receiver, does the heating come on?

Hi thank you so much. It is back on!!!

I appreciate your help so much and also your feedback regarding the RF connection because we were truly clueless. Thank you again!!!

 

[RandomGrinch]

thank you so much. It is back on!!!

Well done!
Though...

the heating has not worked since May and multiple engineers have not been able to resolve the issue.

You may wish to employ different engineers next time!