The boiler is a newly installed Glowworm 24c ,
The problem is that the heating is only partially working in that the radiators are only just warm - and the house is cold.
From what I’ve observed of the boiler, it comes on for a few minutes before the CH temperature reaches the set maximum temperature (as indicated by the boiler LEDs). The boiler then ceases firing and the various temperature LEDs decrease until only the 30 degree LED is illuminated. It then stays in this state i.e. pump working and the boiler not firing for several minutes.
The boiler thermostat is set to max.
The heating thermostat is set to max.
The pump appears to be working ok.
It’s a sealed system and the pressure is 1.5 bar
To summarise:
1. When the boiler fires the boiler CH outflow pipe gets very hot - as one would expect.
2. The inflow pipe is always luke-warm - and doesn't really change in temp before the boiler stops firing.
3. When the boiler stops firing, the outflow pipe quickly cools to luke-warm again.
4. When the boiler is not firing, the in/out water pipes are therefore both barely luke-warm.
5. The same temperature change in pipework can be observed at the radiators.
Any ideas greatly appreciated.
The problem is that the heating is only partially working in that the radiators are only just warm - and the house is cold.
From what I’ve observed of the boiler, it comes on for a few minutes before the CH temperature reaches the set maximum temperature (as indicated by the boiler LEDs). The boiler then ceases firing and the various temperature LEDs decrease until only the 30 degree LED is illuminated. It then stays in this state i.e. pump working and the boiler not firing for several minutes.
The boiler thermostat is set to max.
The heating thermostat is set to max.
The pump appears to be working ok.
It’s a sealed system and the pressure is 1.5 bar
To summarise:
1. When the boiler fires the boiler CH outflow pipe gets very hot - as one would expect.
2. The inflow pipe is always luke-warm - and doesn't really change in temp before the boiler stops firing.
3. When the boiler stops firing, the outflow pipe quickly cools to luke-warm again.
4. When the boiler is not firing, the in/out water pipes are therefore both barely luke-warm.
5. The same temperature change in pipework can be observed at the radiators.
Any ideas greatly appreciated.