Pentair MasterTemp gas pool heater error codes
Plain-English meanings and step-by-step fixes, sourced from the manufacturer manual.
- Error ERR AGS· automatic gas shutoff tripped
- Error ERR HLS· high temperature limit switch open
- Error ERR PS· not enough water flow (pressure switch)
- Error ERR IGN· ignition failure
- Error ERR SFS· stack flue temperature too high
- Error E05 / E06· stack flue sensor open or shorted
- Error E01· water temperature sensor open