My setup: Wahoo Kickr V4, ATV 4K, 4iiii crank based power meter, ZCA (all on the latest firmware / version).
The issue: ERG won’t engage when the power meter is paired as power source but will engage when trainer is selected. Obviously in both instances controllable is set to the trainer. Sim mode is fine with either PM or trainer selected as power. Tried connecting through ZCA & direct to ATV (without HR so not to go over the BT limit on ATV) with the same result.
I’ve raised a support ticket & the upshot is they say it’s not recommended to use the PM as power source in ERG “because of major inconsistencies in programming for various BLE signals from a myriad of different devices”. Additionally “power matching is quite unreliable as to when it will work on your trainer, but not on someone else’s even if it’s the same model. We aren’t even saying that because it doesn’t work now it might not work the next time”. The upshot is it might work, it might not & basically that’s the way it is & it’s not being looked at as a “bug”.
They also suggested I should come on here & see if anyone else has this issue & what (if any) workarounds there are.
The obvious one is to use the trainer as power source instead of PM but to me that’s not the answer. I’m no expert but I honestly don’t understand why it doesn’t work & their response as to why is just poor TBH.
Anyone else use their PM as power source in ERG? If so does it work all the time & what is your setup? Obviously particularly keen to hear from anyone with a setup similar to mine.