Pentair Mini Split Error Codes

11 codes · manual-verified where marked · draft entries clearly flagged

1 codes

Pentair 126 error code draft
Shorted Water Temp Sensor Water temperature sensor circuit is shorted. The sensor is reading near-zero resista…

Pentair E01 error code draft
Open Water Temp Sensor Water temperature sensor circuit is open. The control board cannot read the inlet water…
Pentair E05 error code draft
Open Stack Flue Sensor Stack flue sensor circuit is open. The SFS thermistor is disconnected or has failed wit…
Pentair E06 error code draft
Shorted Stack Flue Sensor Stack flue sensor circuit is shorted. The SFS thermistor is reading near-zero resist…
Pentair ERR AFS error code draft
Air Flow Switch Combustion air flow problem detected during the pre-purge cycle. The blower vacuum switch did …
Pentair ERR AGS error code draft
Automatic Gas Shutoff The automatic gas safety shutoff device has tripped. This is a critical safety lockout t…
Pentair ERR HLS error code draft
High Limit Switch Water temperature at or near the heat exchanger outlet reached an unsafe level. The high lim…
Pentair ERR IGN error code draft
Ignition Failure Heater attempted to light 3 times and failed to establish a flame. Blower runs and igniter fi…
Pentair ERR PS error code draft
Water Pressure Switch Insufficient water flow detected before the ignition sequence begins. The pressure switc…
Pentair ERR SFS error code draft
Stack Flue Sensor The stack flue sensor (SFS) circuit is open or the sensor is reading out of the expected ope…

Pentair SF error code draft
Service Heater Accumulated error events reaching a threshold, a board-level fault that does not map to a speci…