Thank you in advance for your help. My heater is stuck in standby and service with the error code Sb. I understand that means stuck button - however, I've replaced the keypad (see picture attachment). The same thing happened, no change.
Can you please tell me what I need to do?
IMG_4440 2.jpgIMG_4441.jpgScreen Shot 2016-07-16 at 7.09.28 PM.jpg