Pump running

Skrapman

New Member
Heatslave 1519 oil boiler- is it normal for the pump to be running when the heating is off? very quiet but sounds like its constantly circulating hot water
 
Probably.
I don't know that particular boiler, but since it has a built-in pump, it would not surprise me at all if it remains on for a while after the boiler has finished heating the water.
 
When you say 'off' are actually saying the heating is completely off, or just that the boiler is not fired up while the pump is running.
 
When the boiler thermostat temperature has been reached, the boiler cuts out & the room thermostat remains on if the the air temperature has not been reached and the pump will continue circulating. When the air temperature has been reached & the room thermostat cuts out that will stop the pump.
 
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