HRM Chest Strap - Not Connecting
HRM Chest Strap - Not Connecting
I am after some advice please regarding chest strap please. I have used Garmin chest strap for the last 2-3 years and have had no problem connecting. For some reason the strap will now not connect to the PM5. I have completed all the troubleshooting checks (wires / battery etc.) and updated firmware. Initially I thought the strap was not working and even invested in new strap. I remain baffled as to why the strap will not connect. I would appreciate any advice on this issue. Thank you.
Re: HRM Chest Strap - Not Connecting
I assume you've tried what's below, but just to be sure we're on the same page:
What happens when on the PM5 you click Connect and then Connect Heart Monitor? Does is search for ten seconds and show nothing? It should show both ANT+ and Bluetooth options, so you need to select one and then hit Confirm. Then tell Ergdata (if you're using it) to "remember this HRM."
If that's what you've tried, I think that the most likely suspect is a fault with the PM5. There's a slim chance that your HRM is connecting to some other device instead, but that would affect Bluetooth and not ANT+.
Also, you might try updating the PM5 firmware. You can do this with Ergdata (assuming it can connect) or with a printer cable and a Windows computer and Concept2 Utility (free download).
What happens when on the PM5 you click Connect and then Connect Heart Monitor? Does is search for ten seconds and show nothing? It should show both ANT+ and Bluetooth options, so you need to select one and then hit Confirm. Then tell Ergdata (if you're using it) to "remember this HRM."
If that's what you've tried, I think that the most likely suspect is a fault with the PM5. There's a slim chance that your HRM is connecting to some other device instead, but that would affect Bluetooth and not ANT+.
Also, you might try updating the PM5 firmware. You can do this with Ergdata (assuming it can connect) or with a printer cable and a Windows computer and Concept2 Utility (free download).
Re: HRM Chest Strap - Not Connecting
Thanks for the response. Yes - have tried all you mentioned. I updated the latest version of firmware yesterday so do not think that is the issue. I will double check all troubleshooting advice and see how it goes. Frustrating as I have not had this issue before. even more baffling is that the Garmin watch wrist HR does connect to the PM5 without a problem but the wrist HR is erratic and not accurate.I will keep perservering with the issue. Thanks once again.
Re: HRM Chest Strap - Not Connecting
Factory reset of PM5 seems to have done the trick! New HR chest strap now picked up and connected - will give it a 'run out' tomorrow on work out. 

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- Paddler
- Posts: 3
- Joined: June 25th, 2023, 2:17 pm
Re: HRM Chest Strap - Not Connecting
I am having a similar problem. I have an HRM Pro Plus and Garmin 255 and had no issues for almost the 2 years I've owned them. Now the past few weeks I can get the strap to connect, but it frequently drops out several minutes into the workout on the PM5, even though the data is recording on the watch.
I've called C2 twice, and they said to take the batteries out of my PM5 and also take out the battery on my strap and then put them back in after a ten minute period. It hasn't really helped much. One day it stays connected, then another day it cuts out. I'm a bit disappointed at the Concept 2 techs who I've spoken with.
It seems like a factory reset was your answer. Two questions 1) how do you do that? and 2) does this mean any data stored in the PM5 is lost?
Thanks in advance
I've called C2 twice, and they said to take the batteries out of my PM5 and also take out the battery on my strap and then put them back in after a ten minute period. It hasn't really helped much. One day it stays connected, then another day it cuts out. I'm a bit disappointed at the Concept 2 techs who I've spoken with.
It seems like a factory reset was your answer. Two questions 1) how do you do that? and 2) does this mean any data stored in the PM5 is lost?
Thanks in advance
- Carl Watts
- Marathon Poster
- Posts: 4724
- Joined: January 8th, 2010, 4:35 pm
- Location: NEW ZEALAND
Re: HRM Chest Strap - Not Connecting
Make sure you are on the latest PM5 firmware.
First I would factory default reset the monitor then update the firmware on it.
All the data on it is lost.
You hold down the change units and the change display while putting a paper clip in the reset switch on the back.
First I would factory default reset the monitor then update the firmware on it.
All the data on it is lost.
You hold down the change units and the change display while putting a paper clip in the reset switch on the back.
Carl Watts.
Age:58 Weight: 104kg Height:183cm
Concept 2 Monitor Service Technician & indoor rower.
http://log.concept2.com/profile/863525/log
Age:58 Weight: 104kg Height:183cm
Concept 2 Monitor Service Technician & indoor rower.
http://log.concept2.com/profile/863525/log
Re: HRM Chest Strap - Not Connecting
Not if you connect your HR strap to your watch. The watch will then forward your HR to the PM5
Package maintainer of OpenRowingMonitor, the open source Rowing Monitor
Re: HRM Chest Strap - Not Connecting
Re: HRM Chest Strap - Not Connecting
Of you connect your HRM belt to your watch, it does not read the HR during workout, but takes it from the belt.gvcormac wrote: ↑June 1st, 2025, 7:58 amI guess your mileage may vary, but my watch gives bonkers readings for rowing. It is OK for cycling and walking; running marginal.
On steady state work I must say, EPIX Gen2 is giving same results as my belt.
Male - '80 - 82kg - 177cm - Start rowErg Jan 2022
1': 358m
4': 1217m
30'r20: 8068m
30': 8,283m
60': 16,222m
100m: 0:15.9
500m: 1:26.0
1k: 3:07.8
2k: 6:37.1
5k: 17:26.2
6k: 21:03.5
10k: 36:01.5
HM: 1:18:40.1
FM: 2:47:07.0
My log
1': 358m
4': 1217m
30'r20: 8068m
30': 8,283m
60': 16,222m
100m: 0:15.9
500m: 1:26.0
1k: 3:07.8
2k: 6:37.1
5k: 17:26.2
6k: 21:03.5
10k: 36:01.5
HM: 1:18:40.1
FM: 2:47:07.0
My log