how to service pool heater
Clean the filter and turn the thermostat up to try the heater again. A dirty filter can result in low pressure, and if the pressure leaving the filter is low, this will cause the pressure switch to turn the heater off.Check the shut-off valve on gas heaters to ensure that the valve is open and thus supplying fuel to the heater.hen to Call a Professional. A malfunctioning pool heater can be a serious safety hazard. If you are unsure about any situation or procedure, contact an expert or call your manufacturer for assistance. Do not attempt to repair electrical or gas issues by yourself.