What is navien error 598-00 abnormal rtc check panel pcb?
If you own a Navien tankless water heater, you might have come across the error code 598-00 abnormal RTC check panel PCB. But what does it mean, and how can you fix it? Navien is a popular brand of tankless water heaters that offer high efficiency and energy savings. However, like any other appliance, they…