My boiler is an Ideal Icos HE30 boiler. This supplies the central heating and a separate heat store - in other words a big cylinder - for domestic hot water.
It is not a combi boiler.
The boiler is 10 years old and it has been serviced by the original installer each year since installation. It has been reliable since installation.
The boiler is pressurised at 2bar.
Radiators fitted TVRs. All radiators heating OK. Radiators bled.
The CH system has a magnet debris filter.
No issues when the boiler is heating the DHW cylinder.
In the heating season each year I increase the boiler temperature control to near maximum.
This heating season the boiler has locked out a few times.
Fault code display alternates between L9 and H9 which relates to temperature monitoring thermistors.
Resets display without problem and then runs for another week or so before it locks out again.
I don't believe both thermistors have gone out of whack. So maybe a problem with water temperature?
At last week's annual service the boiler passed as good to go by the plumber. He confirmed that the pump was working correctly. The pump is a CPC CP63.
That said he was reluctant to get involved with resolving cause of the fault codes.
He said it could be one of many things and suggested I contact Ideal as it has special test equipment that could diagnosis the root cause rather than willy-nilly approach of swapping out of components.
I wonder given the extensive experience and knowledge of forum members their views, what the problem might be, and how it can be resolved in a cost effective manner.
It is not a combi boiler.
The boiler is 10 years old and it has been serviced by the original installer each year since installation. It has been reliable since installation.
The boiler is pressurised at 2bar.
Radiators fitted TVRs. All radiators heating OK. Radiators bled.
The CH system has a magnet debris filter.
No issues when the boiler is heating the DHW cylinder.
In the heating season each year I increase the boiler temperature control to near maximum.
This heating season the boiler has locked out a few times.
Fault code display alternates between L9 and H9 which relates to temperature monitoring thermistors.
Resets display without problem and then runs for another week or so before it locks out again.
I don't believe both thermistors have gone out of whack. So maybe a problem with water temperature?
At last week's annual service the boiler passed as good to go by the plumber. He confirmed that the pump was working correctly. The pump is a CPC CP63.
That said he was reluctant to get involved with resolving cause of the fault codes.
He said it could be one of many things and suggested I contact Ideal as it has special test equipment that could diagnosis the root cause rather than willy-nilly approach of swapping out of components.
I wonder given the extensive experience and knowledge of forum members their views, what the problem might be, and how it can be resolved in a cost effective manner.