Why is my pool heater not coming on?

Your pool heater may have inadequate water flow due to a dirty filter, closed valve, external bypass, reversed water connections, or pressure switch out of adjustment. It is also possible that your thermostat is out of calibration or requires to be replaced.

Why won t my hayward pool heater ignite?

It could be due to less obvious issues. Low gas supply, failing pilot generator, a bad gas valve, slight blockage in the pilot assembly. If you are unable to light the pilot, visit your local Hayward dealer for guidance.

How to get my pool heater to work?

What to do when your pool heater won’t turn on

Keep your filter, and filter media clean.
Empty out your skimmer and pump baskets weekly.
Run your pump at least 8 hours.

Is there a dual thermostat on a Teledyne pool heater?

The diagram below is from the Teledyne Laars Series One heater, Model EPS/EPC, and Laars Series 2 ESC. The Dual thermostats (shown above) is something of a gimmick, it just allows you to keep two preset temperatures, and use the 3-position Spa-Off-Pool switch to select Spa or Pool, it’s nothing more than that.

How to troubleshoot a spark ignition pool heater?

Second in our Series of Gas Pool Heater Troubleshooting Guides, today we tackle the early electronic pool heaters from the mid-eighties to the late nineties. A Spark Ignition is akin to an electronic gas stove top.

What to do if your pool heater is not working?

If you find no voltage or less than 24 volts on the black wire (outgoing) of the pressure switch, check for a dirty filter, dirty pump or skimmer baskets or closed or partially closed valves or broken check valves. Also check for an external bypass, a valve outside of the heater, which can allow too much water to bypass the heater.

What causes a failed fusible link on a pool heater?

The cause of a failed Fusible Link should be investigated. It could be material laying on the burners, or leaves or nests on top of the heat exchanger, or high winds downdrafting, or soot or lime deposits between the copper heat exchanger fins.