Climote hub working for zone 1 but not zone 2.

[Samps]

I recently moved into a house with a Climote hub to control the heating. It works for zone 1 (living area downstairs) but not zone 2 (upstairs). Any ideas?

 

[Aquarius]

I recently moved into a house with a Climote hub to control the heating. It works for zone 1 (living area downstairs) but not zone 2 (upstairs). Any ideas?

Check the zone valve