Piezo ignitors can click like a Western Union office and not ignite squat. So verifying would be high on my list. I believe in hammer and chisel troubleshooting. Use a long-neck barbecue lighter and put the fire right to the outlet to see if anything gets excited. I have a made in Mexico stove with piezo burners that sounds like a battalion of maracas. Ignite anything? Shirley you jest.
Love the brand name of your heater. Herb Tarlick at work... :)
HYDRO-
combining form
Indicating or denoting water: hydrolysis, hydrodynamics
Indicating a hydroid: hydrozoan
An alien life-form listening in and reading earth buzzwords will never attack. They would be convinced we discovered and wield an alternative reality that would destroy them in seconds...