Some other reasons why your heater or heat pump is not working, while displaying a "Heating" status. The cable connecting your heater to the Omni controller has been unplugged or damaged. The heater is not receiving power. Inspect the breaker for the heater and make sure it is On. The heater/heat pump is detecting a problem.. Hayward Pool Heater Mode Button Not Working [7 Easy Solutions] We have the easiest solution in this article to make your Hayward pool heater mode button keep working. Now focus on these reasons and solutions given below. 1. Heater Switch Difficulty. The heater switch must be tested to ensure correct functioning.
Hayward pool heaters are popular for their reliability. But they can face issues. Understanding these common problems can help you troubleshoot effectively. Let's explore some of the typical issues you might encounter. Heater Not Igniting. One common issue is the heater not igniting. This can happen for several reasons. Check the gas supply.. The motor is responsible for turning the pool heater on and off. If the motor is not working properly, the pool heater cannot operate. In this case, the pool heater needs to be replaced. 3. Repair the Pool Heater Fuse Box. If the pool heater fuse box is damaged, then the pool heater won't function properly.