There are no lights on your smoke detector.
The green light isn't on because there's no mains power after I replaced an Ei151TL that started behaving erratically/bleeping.It's connected to two other smoke alarms.
I have checked all the connections, but still no green light.They are all working but from their batteries.
Although I'm not sure which circuit the alarms are on, everything else in the house seems to be working just fine after new circuitry was installed 18 months ago.I'm confused.Anyone?
This definitely sounds like a wiring issue, whether a miss-wire on the interconnect from installation or as a result of a power surge, blowing the Interconnect and possibly the live in Resistor.This would lead to the green mains light not being on, and in a few cases, erratic behavior such as random beeps or even false alarms.
The wiring should be checked by an electrician.The units are being replaced.All should be okay once the green light is on.
Don't interlink mains smoke detectors that are different from each other.You can change them all to the same make.
Had the electricians check it out today.There is no power to the smoke alarms.Trying to locate the electrician who installed it, as it's baffling.
Don't interlink mains smoke detectors that are different from each other.You can change them all to the same make.
Two of the houses I bought were Newlink and Ei151.The electrician changed the upstairs Newlink one to a Gavern, which is different to the downstairs pair, when we had a new fusebox and loft conversion 18 months ago.
There is no obvious connection in the fuse box because they are connected to a light circuit.
If there is a problem with your smoke alarms, you can't turn them off at the "fuse box".
If you connect them to a lighting circuit, you won't turn your lights off at the fuse box so the smoke alarms are always powered up.
If the first two devices have a green light, then the 2nd of the two smoke alarms should be checked first.
The last smoke alarm that has mains is the first place to check if a number of interlinked smoke alarms do not indicate that.
There is no obvious connection in the fuse box because they are connected to a light circuit.
If there is a problem with your smoke alarms, you can't turn them off at the "fuse box".
If you connect them to a lighting circuit, you won't turn your lights off at the fuse box so the smoke alarms are always powered up.
If the first two devices have a green light, then the 2nd of the two smoke alarms should be checked first.
The last smoke alarm that has mains is the first place to check if a number of interlinked smoke alarms do not indicate that.
Thanks, this all sounds good.It sounds like the connection to the mains may be from the first smoke alarm upstairs.The lights are all working perfectly, but the electricians that came yesterday couldn't find any mains power to any of the three alarms.We have a young child and the alarms have been going off at all hours.Do you think I should have another electrician look at it to see if they can get to the bottom of it?Try connecting one alarm to the upstairs connection to see if it works.This is a great place to get advice.
You should ask if you are familiar with the mains interlinked smoke alarms.
Although it may sound condescending, I have found that some companies will say yes, but not the other way around.You want someone who has worked on them before.
I had another look at the connections to the first alarm prior to getting anyone else in.They are.
The earth is coming out of the first alarm and then interlink wire to the second alarm.
I have a smoke alarm that says no earth should be used.
Adding to the above...There's no earth, just live, neutral and interlink at the second alarm in the chain.It seems like the earth disappears between alarms 1 and 2.I think that's in order.?
Unless double insulated, the smoke detectors are not required to have an earth / earth termination point.
If someone should sever the cable, instead of the electricity flowing through the person who cut it, it will flow to the earth.Yes, it will go bang, but it's better that way.
There is no mains power to the alarms.I contacted the firm that installed the wiring and asked them to look at it.We now have a Garvan, a Newlec and an EI151 after they replaced an old upstairs one.I'll probably change the alarms to three E151s once the wiring is sorted.Hopefully there will be no more surprises.
3 old alarms were replaced with brand new ones in the kitchen as it is only a year old.The others don't have the green light.The alarm circuit was put in when the loft extension was built and runs off its own loop on a separate electric box, meaning mains runs directly to that one first device on the circuit explaining why there is no fault but all the rest are not receiving.Any other ideas?
How many cables do the detectors have?If they have two cables that will be loop in and loop out, which in turn means they are all fed from the same supply, that's the reason.A light fitting?
I replaced the smoke alarm with the same one, but only one had a green light, and the rest had no one to wake them up.The old ones were out of date and needed to be replaced, so they are all the same model.I have checked the wiring and it's the same as before, can anyone tell me why?
The mains smoke alarms are wired in parallel, so the green "power on" light on one device will not affect the others.
I would suspect a supply problem if all devices had no green light.I would suspect a wiring error if one of them had a green light.
You can swap them all for the one with the green light to see if they work.
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