Question about Polar F11 Heart Rate Monitor

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Polar F11 not responding

I have had my polar f11 for about 2 years, lost my chest strap and repurchased the chest strap separatley. It worked fine for a while but recently when i put on my chest strap, my heart rate registers as "00" and I have to wait a while before it registeres my heart rate during spin class. It does the same thind when I am on treadmill but soemtimes says 178 or something which I know is not right. Not sure if it a prob witht he cheest strap and monitor or the watch portion of it.

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  • vanderwalt Jan 07, 2009

    I have the original strap that was sold with the watch but it does not seem to correspond with each other. It gave me my heart rate once of 65 and then never again. I am pregnant and would like to use the heart rate monitor for gym to watch my heart does not exceed 140. I would love some feedback.

  • jac0 Jan 07, 2009

    I'm having the same problem. I have my original strap but sometimes it reads 0 or 225. I just replaced the battery and it is still doing this.

  • wrobo Jan 23, 2009

    My Polar F11 is not registering a heart rate on the watch. Heart rate if does work is very low. Everything else on the watch works great.



    Does the chest strap need replacing?

  • pilgrimdb Apr 02, 2009

    I have had a Polar F11 for 1.5 years. Sometimes it says my heart rate is zero, sometimes 205! I have already replaced the battery, what else could it be?


  • WWM00 Apr 28, 2009

    Have used my F11 Polar watch for nearly 2 years. Since last week it is showing my hart rate as 00. Have changed the batteries in the strap and watch. No change. Everything else seems to be working OK.

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I' advise to start with battery check. If the battery is ok, then you will need a professional to find the cause of malfunction.

Posted on Dec 19, 2008

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I have the f11 polar and have the same issue. I am thinking about replacing the chest strap Should I get a new watch? Os is it worth replacing?

Posted on Mar 03, 2012

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1 Answer

The heart rate monitor chest strap no longer works and I need to buy a replacement. Which are compatible ?


Maybe you can find a replacemente. Do a google search for terms
Heart rate Monitor, the make, model and PARTS

If can't find, do a search for Manufacturer's website and try to get information from some "Contact Us" option. Some even have a phone number.

A shot in the dark:

Accessories Polar USA


Polar Transmitters Straps and Heart Bras

heart rate monitor parts Google Search

Elastic Strap for Heart Rate Monitor Garmin

Sep 01, 2015 | Exercise & Fitness

1 Answer

Chest strap stopped working


This can be caused by a number of factors from dead battery to lost signal. I have on my tips and tricks page a checklist for HR signals and causes for disruption.

If it is the Battery then...

#1 - Hard strap, only remedy is too replace, batteries are sealed in.

#2 - Soft strap (wearlink), these have a replaceable battery 2025 and you can do this yourself.

Apr 01, 2011 | Polar Exercise & Fitness

1 Answer

I have a Polar F11 Heart Rate Monitor. The watch won't pick up the heart rate from the sender (00 is displayed), but my heart rate shows on a Polar enabled Gym machine, e.g. xtrainer. I've changed the...


There is a step by step guide in my tips and tricks of things to try with your strap. If none of these work and you are getting a signal from another source then you need to get either a new strap, a new sender or both. If you send the T-31 wearlink into polar they can run a diagnostic and see which is bad and sell you just the piece you need or a whole new chest piece.

Dec 15, 2010 | Polar F11 Heart Rate Monitor

1 Answer

Polar t31 manual, heart monitor \ need manual


Please go to my tips and tricks page, there is a link to download the manual for all polar products.

Here is the direct link to the F11 in english. If you need in another language than follow the link at my tips and tricks page.

The T31 is the chest strap. The F11 comes with the T31-Wearlink (soft strap) the T31 is a hard strap. different user manuals. The manual you want is listed as (wearlink 31 coded transmitter)

Dec 15, 2010 | Polar F11 Heart Rate Monitor

1 Answer

How do i reset and work my polar t31? I have lost instructions and it is 2 years since I last used it


There is no reset on the T-31 chest straps and transmitters. If the battery is functioning then you simply put it around your chest (make sure the contacts are wet) and turn on the watch. A heart rate signal should appear automatically.

If this doesn't work, I have solutions in my tips and tricks page as well as Manuals for Polar products. The T-31 battery may also be dead, in which case you will need to replace.

The picture you have showing is for a S-Series Speed sensor for the Bike. If this is something you are having a problem with feel free to send me a note related to the problem.

Dec 14, 2010 | Polar T31 Transmitter and Belt Set

1 Answer

My heart rate monitor keeps stopping picking up my heart rate (reading of 00 or --), i have changed the battery in the chest strap, not difference, any ideas?


Click on my profile (escapement), then click on Tips and Tricks. There you will find link to all POLAR watch manuals. Rate me, please.

Mar 03, 2010 | Polar F11 Heart Rate Monitor

1 Answer

My Polar HR monitor ce0537 do not pickup Hart rate


Had the same problem. Just figured it out. The center Polar Logo on the strap needs to touch your chest in a firm way. Bend it back slightly so it fits snug on the middle of your chest.

Jan 31, 2009 | Polar S410 Heart Rate Monitor

1 Answer

Can not change battery on Polar chest strap


Yes, there are a few.
1) As you may noticed, coin and even screwdriver blades are never sharp, but mostly blunt. So, sharpen the edge of the coin on a piece of sandpaper. Get hardened steel screwdriver or very sharp, pointed end file and scrape that indention (groove) to make sure the channel have straight sides, forming I_I shaped groove, but not V shaped groove. When done, insert the sharpened coin and unscrew the battery cover using some pressure as well.
2) In case if the groove is stripped completely, you will have to drill two small holes into the battery cover. Drill them 1mm from the battery cover's edge on opposite sides. Depth of holes should be 0.5 mm. Do not drill through completely. For drilling use 0.3-0.5 mm diameter drill bit.
When finished with both holes, take hardened tweezers, insert each arm into separate hole and unscrew the battery cover.
Do not forget to rate, please.

Jan 25, 2009 | Polar F11 Heart Rate Monitor

2 Answers

How to change the battery on a Polar F11 Heart Monitor


Here are instructions (with images included) on how to replace the battery for a Polar F11: http://timlaqua.com/2008/09/how-to-replace-the-battery-in-a-polar-f11-heart-rate-monitor-hrm/

Jan 11, 2009 | Polar F11 Heart Rate Monitor

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