HELP. Boiler not heating to set temperature.

[davecon70]

Afternoon all. I have an Eco Tec plus 630 boiler which is 5 years old. It’s set up as a system boiler with a megaflo and hive thermostat.

It’s been working fine till today after I noticed that the house didn’t feel very warm.

I checked the display (no fault codes) but the temperature is 36C to 40C but it should be 65 C.

I’ve boosted the heating - the display shows the gas flame so it’s heating but after reaching around 40 C the boiler stops.

The thermostat is definitely calling for heat but for reasons unknown the boiler is stopping at 40 C.

When I boost the how water the boiler fires up again (can see the flame icon) but again the temperature seems to hang around around 36 C.

Any help/ advice would be appreciated as I’m stressed as hell.

 

[davecon70]

Now it has suddenly sprung to life and the temperature has shot up. What an earth is going on?!

 

[Johntheo5]

Now it has suddenly sprung to life and the temperature has shot up. What an earth is going on?!

Next time it happens (hopefully, not) check the (S) status codes, also check that D.000 isn't set too low, partial load.

 

[davecon70]

Thanks. Couldn’t see a thing on status codes but now 70 C

 

[Johntheo5]

This may be of limited assistance as it only stores fault (F) codes and not status (S) codes.

Google Search