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HowToDo Question : Why do I have hot water but no heating ?

Waiting for a better solution Why do I have hot water but no heating ?

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PostPosted: 01 Dec 2010 3:32 
Hello everyone, here I
a twin boiler Saunier Duval 23, running hot water but the radiators are cold. I changed the batteries in the thermostat and nothing.
I hear the boiler but the gas does not illuminate
It's getting cold

help I'd rather not recall the store
thank you in advance for your answers

PostPosted: 01 Dec 2010 5:29 
Cette réponse a aidé l'auteur du sujet.

lélectrovanne circuit that switches the heating circuit to health.

Yours ,

PostPosted: 01 Dec 2010 7:38 
thank you for your answer but for me it is the Chinese
could you explain.

PostPosted: 01 Dec 2010 9:24 

In fact
your boiler burner used to heat both water (SHW) and water heating circuit (ECC).

In normal operation, the pump (a kind of quite noisy pump) circulates the ECC in the heating circuit and passes through the heater (basically a pipe network with the burner below). The burner is switched depending on the heating requirements (controlled by your room thermostat).

When you open the hot water you press a sensor which activates a solenoid switching the circuit on the circuit ECC and ECS bringing running water at the heater and recirculating hot water to your tap.

And it is possible that the solenoid that is failing.

Here, here

PostPosted: 01 Dec 2010 9:32 
Good evening

In fact there is no électronanne on a boiler, but a gas control block.
circuits hot water and heating are independent, in fact it is the pump which is generally controlled by the thermostat. it can be seized or non-powered or just a closed valve, it is placed on the start of the heating circuit often branded Grundfos Wilo Salmson or
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