Hayward heater stopping and starting

  • Last Post 3 weeks ago
Hemmspool posted this 3 weeks ago

I have a Hayward HDN400 pool heater and lately when heating my spa it shuts down around 90F and then comes back on 2-3 mins later.  It'll keep doing this every few mins until it reaches set temperature.  I have installed new filters and checked everything else that could restrict flow which is all fine.  Pressure in filter canister is also in regular range.

InyoRob posted this 3 weeks ago

We'd be glad to assist you. Are you seeing any error codes when it shuts down?