We have had C Heating for about 5 yrs now in our house, with a MEGAFLO
tank and a GRUNDFOS pump, when the heating etc shuts down for the
night, the water pump
continues to run, we have only just noticed this! is this correct or
do I have a fult in the system.... and if so any idea what the fault
That depends on how the system is designed to work. We need to know the type
of control system fitted. Do you have zone valves? If so, how many and what
type? Do you have TRVs on all radiators? Do you have a room thermostat?.
What is the cylinder thermostat set to? Does it click when you move it up
Thanks for the reply, don't know to much info, but...
Honeywell Timer, Megaflow Tank, looks like a Honeywell Motorised
Valve next to
hot water tank & near pump, and a Grundfos water pump. there are no
Rad Thermo's and one thermostat in the hall.
email@example.com (steve) wrote in message
One other thing, when to silence the pump overnight, I have to
remove the wires from the Motorised Valve to the mass of wires on the
fitting, one of these from the same terminal goes to pump, when the
brown lead from the Motorised valve direction is removed.... pump
stops! would I be right in assuming faulty pump, or faulty wiring
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