Eco tec pro 28 only hot water on low flow

[Pilks749]

hi, can I get any advice as I'm abit stumped, customer has Eco tec pro 28

I initially thought the plate heat exchanger at fault but my client is a friend and doesn't have a lot of money,so rather than throw parts at it, what else could cause it? I've had the head off the diverter valve and is working fine, the heat exchangers cold on full flow, so some how no hot is being pumped through, central heating is working fine tho Any answers greatly apresiated as shad young family and no hot water

 

[Agile]

May we ask you on what basis you are attending for this customer?

What other checks have you made?

For example what is the CO2 reading?

Tony

 

[Pilks749]

Hi agile, I'm gas safe registered, Oftec oil registered heating engineer. I tried to upload my licence and registration details.

As I say I need some advice I'm normally pretty good at diagnosis but she has little money as a hairdresser

Re the co reading I haven't put my analiser on it yet as just thought plate heat exchanger but I saw on here that is not always the case, stupid council kitchen fitters boxed it in so tight I had to cut the wood surrounding it just to take the cover off!

Any advice on other possibilities?

 

[Pilks749]

In the combustion area I meant to add on this forum

 

[Agile]

You need to post this question in the CC part of the site as we are not allowed to give advice on gas matters here.

Plates are diagnosed by temperature measurements.

Apparent low power input by gas measurements.

Tony

 

[Pilks749]

ok thanks tony,ill try and get in there,my details are saved as well,ill have another go.

 

[Agile]

In the meantime measure all four temps on the plate when running the specified flow rate.

Can be caused by weak or blocked pump.

Tony

 

[Pilks749]

thanks tony,im trying to start a new conversation in cc i added you but said i cant carry on conversation with you there?

central heatings working fine tho