Glow Worm Flexicom

Cerco

Gas boiler seems to running continuously. No errors message but cannot see pressure. No obvious leaks. Seems the pump just runs all the time.
I guess this is not normal. Any idea what I'd going on?
I bled radiators and let more water into the system through the loop in the hot press.
Heating rads and cylinder ok.

Dtp1979

Cerco wrote: »

Gas boiler seems to running continuously. No errors message but cannot see pressure. No obvious leaks. Seems the pump just runs all the time.
I guess this is not normal. Any idea what I'd going on?
I bled radiators and let more water into the system through the loop in the hot press.
Heating rads and cylinder ok.

So your boiler is firing and heating constantly when the clock is off?

Cerco

Dtp1979 wrote: »

So your boiler is firing and heating constantly when the clock is off?

Apologies, I did not describe it properly. I have it set to come on twice daily and that works fine. When it comes on the pump seems to be running all the time. I thought it should switch on and off like my old oil boiler. I can see the heating indicator going on and off as it reaches the set temperature .
The other issue is that the pressure is not displayed. According to handbook it should display when there is no demand on the boiler.

Dtp1979

Cerco wrote: »

Apologies, I did not describe it properly. I have it set to come on twice daily and that works fine. When it comes on the pump seems to be running all the time. I thought it should switch on and off like my old oil boiler. I can see the heating indicator going on and off as it reaches the set temperature .
The other issue is that the pressure is not displayed. According to handbook it should display when there is no demand on the boiler.

Not sure about the display but once there's a demand from either the stat or clock then yes, the pump will run, and the boiler will fire, then cut in and

Cerco

If there was a leak in the boiler and the pressure was dropping, would that cause the pump to stay running?

Reason I ask this is because I had to bleed three rads upstairs to get them to heat fully.
They were only heating at the bottom.
I cannot see any sign of a leak.

Dtp1979

Cerco wrote: »

If there was a leak in the boiler and the pressure was dropping, would that cause the pump to stay running?

Reason I ask this is because I had to bleed three rads upstairs to get them to heat fully.
They were only heating at the bottom.
I cannot see any sign of a leak.

No, low pressure or a leak wouldn't cause the pump to run

Cerco

Grand. Thanks for the info Dtp.
It is due a service anyway now. Thanks again.

K.Flyer

The Flexicom pump can run on after the boiler has switched off for at leat 5 minutes. How long is it running for, more than 10 mins?
There may be a glitch on the printed circuit board, try pressing the small reset button under the display. If the reset does not work, try turning off all the electrical supply to the boiler at the main switch and see if the issue persists after powering back up again.

Cerco

Tried the reset button and and disconnected the power but it is still the same.
The pump runs on for only about a minute after the timer switches off.

Thanks.

Dtp1979

Cerco wrote: »

Tried the reset button and and disconnected the power but it is still the same.
The pump runs on for only about a minute after the timer switches off.

Thanks.

That's what it's supposed to do. It's called pump overrun

K.Flyer

Cerco wrote: »

Tried the reset button and and disconnected the power but it is still the same.
The pump runs on for only about a minute after the timer switches off.

Thanks.

So it runs for about a minute, this is normal system operation.
When the pump stops (after the minute or so) does the display then revert back to the pressure reading, e.g 1.5, and everything stays like that until the next time clock activates?

Cerco

No, it just displays the temperature. No pressure reading at any stage.This is what started me looking into it. I was concerned after bleeding rads and opening the fill loop valve, that the pressure would become too high.

K.Flyer

Is it a Flexicom HX model?

Cerco

K.Flyer wrote: »

Is it a Flexicom HX model?

No it is a
18sx.