Smoke / C02 Alarm flashing red LED (no alarm)

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Hey

just wondering if anyone knows what the problem with the alarm is. One of our smoke/co2 alarms has a flashing red led next to the RF module LED (Ei3028).

No alarms have sounded, and all the other alarms dont have this flashing light (It flashes twice every 2 seconds or so).

Tia

https://www.safelincs.co.uk/templates_safelincs/files/datasheets/4218_Ei3028_Instructions.pdf

View attachment Mw3urOf.jpg

 

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One of my 4 started beeping, wondering why my mains powered alarms were doing that. Never realised they have battery backup. Replaced battery and all was well. Maybe battery running out?

could be, its weird that its the RF module indicator that is flashing though

 

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It doesn't mention the flashing you described in the manual. However, CO detectors have an expiry date as the sensors become less sensitive over time. If it's 5+ years old, it could be related to that.

I think its about 18 months old so should be ok, its also wired directly to the mains. Im guessing its lost signal to the other alarms somehow as the indicator next to the LED has a symbol that looks exactly like a wifi signal symbol

 

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Does the alarm actually sound? You should test it, if it doesn't make a sound then the flashing lights indicate toxic levels of CO.

the alarms are working, there are three LED's on the front (top) separate from the red flashing LED of the alarm for smoke/ Co2 etc and none of those are lit

 

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Thanks for everyone's help, the red led stopped flashing about midnight last night. It was too late to run a test from the RF module that covers the flat (noise), but I ran it this evening and everything seems fine.
I can only guess as to what caused it to start flashing but it seems most likely that one of the sensors lost connection to the base station for a short time causing the flashing red LED.