GRUNDFOS UPS-15 HEAT PUMP

[SMG]

For quite some time my TV has been going off then on again within a second. Leccy hasn't found anything wrong with the home system. However, I recently turned my rad valves down a little & I can now hear when the heating system runs.

Unbelievable, when the pump starts, the TV goes off & on again. Some kind of surge?? Any help would be appreciated.

 

[gas112]

What make and model of boiler do you have

 

[SMG]

Its a Main heat 18 condenser boiler. Been doing some experimenting, its my computer that goes off for a second, not the TV, so I plugged the PC into my extension lead & ran it from a different circuit, no fault. My boiler circuit is separate from my lounge circuit

 

[Johntheo5]

If your boiler is a heat only boiler with a grundfos pump then its possible that the pump start up is causing this even if unlikely, when grundfos introduced A rated pumps some yeatrs ago now, the start up surge was causing damage to boiler systems, (PCBs etc) cured I think by installing a suppresser cable supplied FOC from Grundfos.