Reenable ERG mode after stopping on Computrainer.
Here’s my life:
Set up Zwift (launch, pick workout & course), queue up TV, get bike ready.
Hop on bike, start pedaling. After 2 minutes realize that, once again, I forgot to turn the effing fan on. Curse myself for never learning.
Get off bike, turn on fan, remount bike. In this time the rider has stopped and ERG mode is temporarily disabled. GRR.
Now for the next 5-15 minutes I don’t have the benefit of a trainer that automatically adjust power to my desired cadence. Perhaps this is my punishment for never remembering to turn on my fan. It seems that programming could compensate for my forgetfulness.