Brand guide
Pentair error codes
Match the equipment family and displayed code before following any check.
Official Pentair material describes 126 as Shorted water temperature sensor. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.
Official Pentair material describes E01 as Open water temperature sensor. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.
Official Pentair material describes E05 as Open stack flue sensor. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.
Official Pentair material describes E06 as Shorted stack flue sensor. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.
Official Pentair material describes ERR AFS as Air flow switch open: the blower is not on, or air through it is being restricted. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.
Official Pentair material describes ERR AGS as Automatic gas shutoff: water temperature after the second pass through the heat exchanger is more than 140 degrees F. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.
Official Pentair material describes ERR HLS as Hi temperature limit switch open: water temperature after the first pass through the heater exchanger is more than 135 degrees F. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.
Official Pentair material describes ERR IGN as Ignition Control Module was not able to ignite the heater. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.
Official Pentair material describes ERR PS as Water pressure switch open: no water flow through the heater. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.
Official Pentair material describes ERR SFS as Excessive stack flue temperature: the temperature of the stack flue is more than 480 degrees F. This guide records the cited product-family scope, safety-reviewed owner checks, and service limits.