Hi. I have a Raypak pool heater Model P-R406A-EN-C. The display is not working. It is blank. The heater is about 5 years old. Any tips to get it working again. Thank you.
Hi and welcome please update your signature. We would need to know how the heater is hooked up, check toggle switch on the side of heater, confirm voltage going into heater. Otherwise it’s like posting “my car won’t start”.
