Biasi combi boiler 30c with Salus RT500RF

[the00sunseeker]

In cold frosts lately the Biasi boiler, not quite a year old, is not firing up when requested by Salus thermostat. When i come in to the house and realise rads cold no heating i have to turn the hot water tap on for 30secs and then the boiler fires up!

This has only happened in the cold, have had engineer out but so far all has worked when he is present, am i missing something any help suggestions gladly welcome

 

[Agile]

I have an idea of the likely cause but as its on warrantee thats irrelevant. What I am thinking of would not normally be covered by the warrantee though as its caused by an installation error.

Tony

 

[the00sunseeker]

I have an idea of the likely cause but as its on warrantee thats irrelevant. What I am thinking of would not normally be covered by the warrantee though as its caused by an installation error.

Tony

Thanks Tony but what is your idea as i have had the service guy out and he still is not sure what the problem is!

 

[the00sunseeker]

I have an idea of the likely cause but as its on warrantee thats irrelevant. What I am thinking of would not normally be covered by the warrantee though as its caused by an installation error.

Tony

Thanks Tony but what is your idea as i have had the service guy out and he still is not sure what the problem is!

Can you recommend what to do next please, very concerned thank you

 

[vicvapour]

In cold frosts lately the Biasi boiler, not quite a year old, is not firing up when requested by Salus thermostat. When i come in to the house and realise rads cold no heating i have to turn the hot water tap on for 30secs and then the boiler fires up!

This has only happened in the cold, have had engineer out but so far all has worked when he is present, am i missing something any help suggestions gladly welcome

Where is the boiler located?

If all is well when the heating engineer is called out, I would look towards a frost thermostat if the problem is only when is it cold, as I dont think these boilers have frost protection in-built.

 

[Agile]

All Biasi boilers have built in frost protection based on internal sensors.

Tony

 

[vicvapour]

All Biasi boilers have built in frost protection based on internal sensors.

Tony

Biasi 24 x doesn't have frost protection built in to the boiler.

Garda models M90FXXXX don't have frost protection
(if a frost stat is to be fitted then connections are to be made between terminals 1 and 2)

Parva models don't have frost protection (if a frost stat is to be fitted then connections are to be made between terminals 1 and 2)

Gaia models 424 xx don't have frost protection (if a frost stat is to be fitted connections are to be connected to the terminal block between terminals 2 and 3

Only Riva ragne of boilersthe has in-built frost protection when the temperature is below 5 degress, it operates.

 

[Agile]

Just because they tell you where to fit an external frost stat does not necessarily mean they do not have built in frost protection.

 

[Agile]

Just because they tell you where to fit an external frost stat does not necessarily mean they do not have built in frost protection.

 

[vicvapour]

Just because they tell you where to fit an external frost stat does not necessarily mean they do not have built in frost protection.

Why would you fit an external frost stat in a boiler that already has one?

 

[Agile]

To protect pipework for example in a loft or garage or even underfloors.

 

[vicvapour]

To protect pipework for example in a loft or garage or even underfloors.

Or an un heated annex.