Neighbours alarm causing my boiler to click?

akira181

The combi boiler for my flat is in the same room I have been using as a home office while I work from home.  The room is at the back of the building, looking onto an inner courtyard of sorts for the block of buildings.  Predominantly residential buildings and store fronts on the ground floor, main road facing buildings.  I've noticed that a house/business alarm goes off randomly a couple times throughout the day for 5 to 20 seconds at a time.  It sounds quite distant, like from the opposite end of the block and not from an adjacent building. 

Whenever the alarm stops, there is a simultaneous click/clunk sound from the area of my boiler.  I don't think it's from the boiler itself but more in the direction of where the gas and water pipes run, a bit hard to pinpoint.  Sounds kinda like a water valve being shut quickly or a relay switching.  I have no idea why an alarm stopping on the opposite side of the block would cause interference with something in my flat or my neighbours flat (the click/clunk sound could be coming through the wall, hard to tell) but they're definitely linked as it happens every time the alarm stops and only when the alarm stops.

Any ideas?

rach_k

Could it be something that is causing both things to happen, rather than one thing causing the other?  For quite a while, our electricity supply would dip occasionally - most things would stay on but one kitchen appliance would need its clock resetting and a neighbour's alarm would go off.  Nothing else would look like anything had happened.  

greyteam1959

Sounds very much like an interruption in the electricity supply.
Maybe only for a second or two.