Question about Timex Digital 30 Lap Heart Rate Monitor 5C401

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Timex M515 Heartb Rate Monitor in correct readings

Timex Model M515Incorrect readings when using a TIMEX Heart Rate Monitor - despite changing bateries twice and cleaning the electrodes on chest strap.Wore another HRM (simultaneously)to compare and TIMEX is off and drifting / jumping by several tens of beats - sometimes just "maxes" out at heart rate of 240 and gets "stuck @ 240. The watch functions just fine, the timers, stopwatch etc is OK. Issue is just with Heart rate monitor portion.This is my best HRM and I hate to just leave it in the drawer!

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  • jrmccoy07 Jan 15, 2009

    I have the same problem AGAIN! It seems to occur after I have gone an extended time without using the device. The first time I ended up buying a replacement but now the replacement has done the exact same thing - I don't want ot have to replace it again - if I do, it'll have to be with anothee brand

  • mdlairdjr May 16, 2009

    I have the Timex Ironman T5F001 with heart rate monitor. It worked great for several years but now I can't get it to accurately give me a heart rate. It jumps all over the place then settles at 240 until I turn it off. I changed batteries in both the watch and in the transmitter with no luck. I haven't tried to replace the strap, but I think that is my next step.



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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".

Posted on Jan 05, 2011


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