Incorrect heart rate reading

[DeanoDeano1]

I had an ECG done several times and all indicated my resting heart rate between 43-48, nurse also showed me how to manually test your BPM. 

I am currently at 48BPM, yet my ionic is saying 57BPM. Also when I put the fitbit Coach on whilst sat perfectly still it went right up to 103BPM but I was nicely at 47-48BMP. 

restarted the device, changed wrists, cleaned the lense, changed the position, tightened it , loosened it, but the watch seems to be completely out. 

To test just sit still, find your pulse, count the beats in a 10 second frame (use a clock) and times by 6. 

thinking mine is broken! 

Thanks 

Moderator edit: updated subject for clarity

[MarreFitbit]

Welcome on board @DeanoDeano1! Thanks for already troubleshooting this inconvenience you've been having with your heart rate, nice way to go! Also, thanks for sharing how we can find our pulse, I will do the test. 

As you may know, your heart rate may be affected by any a number of factors at any given moment. Movement, temperature, humidity, stress level, physical body position, caffeine intake, and medication use are just a few things that can affect your heart rate. Different medical conditions and medications can impact your heart rate as well.

When your heart beats, your capillaries expand and contract based on blood volume changes. PurePulse LED lights on your device reflect onto the skin to detect blood volume changes and finely tuned algorithms are applied to measure heart rate automatically and continuously. The heart-rate icon you see on the display tells you if you're in 1 of 3 heart-rate zones.

Resting heart rate refers to the heart rate measured when you’re awake, calm, comfortable, and have not recently exerted yourself. We use your heart rate data from when you’re awake and asleep to estimate your resting heart rate. For best accuracy, wear your device to sleep. 

Your resting heart rate is usually higher than your heart rate while you are asleep, so don’t be surprised if your resting heart rate is higher than the lowest number that you see in your heart rate graphs.

Your tracker can have difficulty finding a signal, typically due to the tracker's fit. For example, wearing your band tightly may constrict blood flow in your wrist and affect the signal. When you're not exercising, wearing the tracker just above the wrist bone--as you would a watch--typically works fine. However, moving the tracker up a couple inches can be helpful during high-intensity exercises or exercises that cause you to bend your wrist frequently. I know you've tried different placements, but I think it won't hurt to double check recommendations for wear and other tips shared by @SantiFitbit. 

Note that on Fitbit Ionic, the heart-rate value appears gray if your watch is searching for a stronger reading.

Occasionally your device may have difficulty getting a strong signal. If you don't see your heart rate on your device, first make sure you are wearing it correctly. After a short wait, you should see your correct heart rate again. On Ionic, make sure the Heart Rate setting is On. For additional troubleshooting, see Why don't I see my heart rate on my Fitbit device?