Jandy JXi 400 - Igniter Problems

Had the unit installed 10/28/2018, no issues except for having to replace the Thermal Regulator Valve about 6 months ago (rusted shut)

Now 2 weeks ago: Got a fault: CHECK IGN STEPS

• Found the igniter element was broken
• Replaced with a new igniter, worked fine for one day, then the new igniter element broke
• Replaced with another new igniter, worked for 3 days, then this new igniter element broke.

Why?