No more sleep tracking after turning off heart rate sensor

According to Garmin, one of the requirements for sleep tracking to work is

• The optical heart rate sensor must be enabled while sleeping.

…… more info. here

support.garmin.com/.../

Captain_Debugger said:

I have stopped using the optical sensors on my watch for a while now, after they start to irritate the skin under

Nothing to do with the sensor per se. It'll most likely be contact dermatitis and more to do with wearing the watch for extended periods without cleaning underneath.

You can edit the Battery Saver power settings, which most people use overnight, to have WHR on during the night for sleep tracking.

i dont think you can. only option is change not and off. if he dosent have HR on during day then if he choose change not, hr will be off when batterysave mode is on

My bad. I’d forgotten the OP has the sensor turned off for normal use. 

Captain_Debugger You'd be better off finding out why you're getting skin problems from your watch. Take the watch off and allow some time for the skin to heal before putting it back on. Contact Garmin support but also consider regularly removing your watch, cleaning it and the skin underneath, and allowing the skin to breath before putting the watch on.

Thanks all for the replies.  Will play around with the Battery Saver settings also.

We shower everyday here in South East Asia, sometimes twice, so the watch does come off for a rinse regularly, not just after workouts.

Thought it may also have to do with the new sensor on the 2, as I don't remember encountering the same with the 1 and 1 Solar (and now I want to go 2X)

Anyhow, thanks for the suggestions 

Captain_Debugger said:

after they start to irritate the skin under

In the manual, Its clearly says "Rinse the watch with fresh water after each workout"

If you do this every workout, skin irritation will not occur. The reason why you getting skin irritation, If you don't rinse the watch, the water in the sweat contains salt, after it convert in to tiny salt crystal. which will start irritate in your skin.

I usually rinse my watch in tap water after every workout.