The Pentair 472610Z is the OEM replacement membrane pad (NA, LP Series) for the Pentair MasterTemp and Max-E-Therm pool and spa heaters manufactured before May 5, 2021. ⚠️ IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification. ⚠️ IMPORTANT: DATE-OF-MANUFACTURE RESTRICTION This membrane pad fits MasterTemp and Max-E-Therm heaters manufactured before May 5, 2021 only. Check the date-of-manufacture label on your heater before ordering — heaters produced on or after that date require a different part. The membrane pad is the primary user interface on the MasterTemp and Max-E-Therm heater control panel, providing the button input surface used to set temperature, switch between pool and spa modes, and activate or deactivate the heater. Degraded membrane contacts cause unresponsive or erratic button behavior; replacing the membrane pad restores reliable heater control without replacing the full control board assembly. Specifications Pentair Part Number 472610Z Part Type Membrane Pad Series NA, LP Series Equipment Line Pentair MasterTemp / Max-E-Therm Pool & Spa Heater Date Restriction Heaters manufactured before 5/5/2021 only Quantity Included 1 Fits Into Brand Equipment Line Model / Part Number Notes Pentair MasterTemp 125 Heater MT125 / MasterTemp125 For heaters made before 5/5/2021 Pentair Max-E-Therm Heater MAX-E-THERM For heaters made before 5/5/2021 Pentair Heater Master Kit — All (MasterTemp / Max-E-Therm) 461100 Included in All master kit (NA, LP Series) Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering. Pro Tip Before ordering, locate the date-of-manufacture label on your heater — typically found on the rating plate or inside the front panel — and confirm it predates May 5, 2021. This is the single most important verification step for this part. Once confirmed, check whether the membrane pad or the control board behind it is the source of your input failure: if all buttons are unresponsive while the display remains active, the membrane pad is the likely culprit. If the display is blank or showing fault codes unrelated to button input, have the control board evaluated before replacing the membrane pad.
