I have noted an intermittent but often recurrent issue which only occurs in Workouts in ERG mode on my Saris H3 smart trainer. Just wondering if others have experienced this and if it can be solved. I’ve been having this problem since getting my smart trainer. I have not had an opportunity to try any other smart trainer.
Saris H3 smart trainer, AppleTV, iPhone (different ones) for Zwift companion app, CABLE bluetooth bridge for Saris, cadence sensor and HRM. All firmwares and Apps up to date. All connections are working perfectly, never any sensor drops. Strong high speed WiFi. I’m quite sure that I have ruled out connectivity as the issue. Same thing happens whether or not I use Zwift companion app as the bridge.
My system otherwise works perfectly in free ride mode. The trainer responds normally and feels quite realistic with the terrain.
Here’s my issue:
During a workout, when a new interval changes the power (especially if a big change, either up or down), my Saris H3 trainer will continue using the same resistance and forcing me to put out the same power as the interval which just finished. For example, I’ll be in a recovery at 120 W, the next interval is 200 W and as my Avatar goes through the arch, my trainer still only allows me to put out 120 W, so I end up spinning very fast to try to get more power but I don’t get more resistance from the trainer.
This only happens sometimes and more so if I maintain steady cadence as I ride through the arch on the screen. If I slow down my cadence as I go through the arch, wait for the trainer to feel more heavy, and then start pedalling, it happens less often.
Things I have tried, (none of which have made any difference):
- Updating all apps, firmware, calibrating the trainer many times.
- Using a different bridge or no bridge (I use a bridge because AppleTV only allows limited bluetooth connections so if I use no bridge, I have to set the cadence input to the trainer which is less accurate).
- Changing trainer difficulty in Zwift settings. Currently it’s set in the middle.
- Using various gear configurations on the bike, set at the start of the workout (I very rarely change gears during an ERG workout unless it’s a huge power sprint effort).
When this problem happens, the quick bandaid fix is to turn Erg mode off and then back on again after 1-2 seconds (in companion app). The trainer will then give me the correct resistance and power.
As mentioned above, I have found that I can prevent it from happening usually by slowing my cadence right down just before an arch and then waiting a second before peddling up again. This is rather annoying to do in certain situations such as a brief power surge interval.
Sorry for the long post but I wanted to be as detailed as possible. Thanks in advance to any comments/solutions/explanations shared.