Question about Garmin Forerunner 405 010-00658-20

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Garmin 405 heart rate over 240

When I'm starting to run, my heart rate is between 150 and 160 (sometimes 170); after 750 meters; (this might change from run to run) it suddenly (from one moment to the next) jumps to 210-220, and sometimes it jumps back from 230 to 150... I don't think my heart rate actually jumps up and down like that, I don't feel tired or anything, and regularly my heart rate is above 240, at which point I think I should go into cardiac arrest... Any ideas? When it's below 150, I have the feeling it is correct, but once above 170-180 I have the feeling it jumps straight to 200-240...

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  • 186 Answers

The device is displaying an incorrect heartbeat, otherwise, you would be dead. Try putting it on the other wrist and make sure it is positioned per the instructions. If the readings persist, contact Garmin Support for a replacement.

Posted on May 02, 2017

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: Garmin 305 Heart Rate Function Gone

I Have had the same problem couple of times (and forgotten each time how I solved it). I figured it out just now and this is what I did.

1) turn on unit and put on heart monitor (make sure battery is good and wet heart strap)
2) using the mode button navigate the menus to: Settings: General: Accessories: Heart Rate Monitor
3) Once in the Heart Rate Monitor option make sure "Yes" is selected and then use the arrow buttons to highlight "Restart Scan" . Press the enter button to rescan for your heart monitor. (I had to rescan twice)
Go back to the main monitor screen to see if you are recieving heart rate signals.

I am not sure why a manual rescan needs to be done every time but it would be nice if Garmin fixed this issues in a unit software update (my unit has software version 2.80)

Posted on Oct 26, 2008

  • 1 Answer

SOURCE: Garmin 405

You have to go under Menu, then scroll to Settings, then scroll to System, then scroll to Language. Then you can scroll through the list of supported languages until you find the one that suits you.

Posted on Jul 05, 2009

  • 1 Answer

SOURCE: Garmin Forerunner 405 always shows wrong time/date

Turn on the GPS. The forerunner will automatically sync time and date. Make sure the DST is switched to auto. I had the same problem and researched for the answer....which led me here. Turning on my GPS sync'd time and date for me. I hope this helps

Posted on Nov 01, 2009

  • 84 Answers

SOURCE: I haven't used my Garmin Forerunner 305 for over a

I found this on the internet......

In the battery compartment there’s a gold contact that touches the top of the battery (+ve) which was in a position that would never make contact with the battery. I bent it out slightly, made sure the battery was seated correctly (i.e. flat) and as if by magic my heart rate appeared on the large Garmin display!


Also found this..........

I Have had the same problem couple of times (and forgotten each time how I solved it). I figured it out just now and this is what I did.

1) turn on unit and put on heart monitor (make sure battery is good and wet heart strap)
2) using the mode button navigate the menus to: Settings: General: Accessories: Heart Rate Monitor
3) Once in the Heart Rate Monitor option make sure "Yes" is selected and then use the arrow buttons to highlight "Restart Scan" . Press the enter button to rescan for your heart monitor. (I had to rescan twice)
Go back to the main monitor screen to see if you are recieving heart rate signals.

I am not sure why a manual rescan needs to be done every time but it would be nice if Garmin fixed this issues in a unit software update (my unit has software version 2.80


Hope this helps......

Posted on Mar 01, 2010

Testimonial: "Excellent - this was really helpful and fixed the problem. Many thanks. BH"

  • 1 Answer

SOURCE: garmin edge 305 heart rate monitor

I had the same problem, but it was unresolved using the above info. I finally went into the menu (Settings / System / Accessories) and selected Restart Scan. All is well now =)

Posted on Jul 03, 2010

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1 Answer

How do i change a battery in a garmin 305


Hi David!

From your Owners Manual (Page 54)
http://www8.garmin.com/manuals/984_OwnersManual.pdf

REPLACE THE HEART RATE MONITOR BATTERY

"The heart rate monitor contains a user replaceable CR 2032 battery...
Locate the circular battery cover on the back of the heart rate monitor. Use a coin to twist the cover counter-clockwise until it is loose enough to remove. Remove the cover and replace the battery. Be careful not to lose or damage the o-ring gasket on the cover. Then use a coin to twist the cover back into place."

Hope this helps.

Jan 16, 2011 | Garmin Forerunner 305 GPS Receiver

Tip

Garmin Forerunner 405 manual.


Follow this link and download Forerunner 405 manual. <a href="http://static.garmincdn.com/pumac/Forerunner405_OwnersManual.pdf">http://static.garmincdn.com/pumac/Forerunner405_OwnersManual.pdf</a>

on Feb 26, 2011 | Exercise & Fitness

1 Answer

I haven't used my Garmin Forerunner 305 for over a year - but have just started using it again. It wasn't picking up my heart rate from the HRM, so I changed the battery in the HRM but it is still not...


I found this on the internet......

In the battery compartment there’s a gold contact that touches the top of the battery (+ve) which was in a position that would never make contact with the battery. I bent it out slightly, made sure the battery was seated correctly (i.e. flat) and as if by magic my heart rate appeared on the large Garmin display!


Also found this..........

I Have had the same problem couple of times (and forgotten each time how I solved it). I figured it out just now and this is what I did.

1) turn on unit and put on heart monitor (make sure battery is good and wet heart strap)
2) using the mode button navigate the menus to: Settings: General: Accessories: Heart Rate Monitor
3) Once in the Heart Rate Monitor option make sure "Yes" is selected and then use the arrow buttons to highlight "Restart Scan" . Press the enter button to rescan for your heart monitor. (I had to rescan twice)
Go back to the main monitor screen to see if you are recieving heart rate signals.

I am not sure why a manual rescan needs to be done every time but it would be nice if Garmin fixed this issues in a unit software update (my unit has software version 2.80


Hope this helps......

Feb 09, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

The watch wont find or pair with the heart rate monitor.


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Jan 07, 2010 | Garmin Forerunner 405 W/ Heart Rate...

3 Answers

Can`t pair Garmin Forerunner 50 with footpod


Hi,

I've been having the same problem. I couldn't pair my footpod, but my heart rate monitor was working. I've only had the 50 for about eight weeks.

I reset the watch, holding view mode and Start/Stop at the same time.
This didn't do any good.

I swapped the battery in the HRM with that in the foot pod. The foot pod synched the HRM didn't.

Solution duff battery. I'd change yours it will probably do the trick.

Hope it helps

John-Paul ( AKA OldGreyWizard)

Jan 10, 2009 | Garmin Forerunner 50

1 Answer

Garmin 405 pair to wrong HRM


I Have had the same problem couple of times (and forgotten each time how I solved it). I figured it out just now and this is what I did.

1) turn on unit and put on heart monitor (make sure battery is good and wet heart strap)
2) using the mode button navigate the menus to: Settings: General: Accessories: Heart Rate Monitor
3) Once in the Heart Rate Monitor option make sure "Yes" is selected and then use the arrow buttons to highlight "Restart Scan" . Press the enter button to rescan for your heart monitor. (I had to rescan twice)
Go back to the main monitor screen to see if you are recieving heart rate signals.

I am not sure why a manual rescan needs to be done every time but it would be nice if Garmin fixed this issues in a unit software update (my unit has software version 2.80)

Jan 04, 2009 | GPS

1 Answer

Timex M515 Heartb Rate Monitor in correct readings


I´m experienced the same problem of incorrect readings after a long time without use. I cleaned the rubber parts of the chest strap with soap and water, than I use some silicone grease or other silicon liquid to keep the rubber hydrated. Make a careful cleaning in the contact area between the rubber and the plastic parts, the fissure in these area use to be full of "sweat dust".

Jan 03, 2009 | Timex Digital 30 Lap Heart Rate Monitor...

5 Answers

Garmin edge 305 heart rate sensor does not work


the rescan worked for me, didn't know it existed, briljant. Follow list below:settings/system/accessoires/rescan
I love google today;o)

Mar 21, 2008 | Garmin Edge 305 GPS Receiver

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