Control Board + Film Pad Replacement Kit — Compatible with Pentair MasterTemp NA/LP and Sta‑Rite Max‑E‑Therm NA/LP Series Key benefits Restores reliable heater control: replaces a faulty electrical control board to recover normal ignition, safety monitoring, and electronic control functions. OEMfit compatibility: designed for direct replacement in the listed Pentair and Sta‑Rite heater models so you avoid fitment issues and lengthy troubleshooting. Improves heater performance: includes the correct film pad to ensure proper electrical/thermal interface and help maintain consistent operation. What's included 1 control board (replacement board) 1 film pad (420020029Z / 472610Z) Compatible heaters and models Pentair MasterTemp NA and LP Series pool and spa heaters Sta‑Rite Max‑E‑Therm NA and LP Series pool and spa heaters Specific MasterTemp and SR series models: MasterTemp 400HD, MasterTemp 400, MasterTemp 300, MasterTemp 250, MasterTemp 200, SR200NA, SR333NA, SR400NA, SR200HD, SR333HD, SR400HD, 460805 Replacement part numbers 420020007S 472610Z 461105 Function and performance Purpose: electrical control board for pool and spa heater systems, with a matching film pad for the boardtoheater interface. Benefit: replaces worn or damaged electronics to reduce downtime and restore normal heater operation. Fit: matches OEM part numbers for straightforward replacement in the models listed above. Use scenarios Service : a failed control board on a MasterTemp 400 after the heater stops responding to spa or pool temperature commands. Preventive maintenance: Swap in the control board and film pad during scheduled heater servicing to address intermittent control faults before they cause extended downtime. Component replacement after damage: a damaged film pad and control board after electrical arcing or moisture exposure to the heater to safe, reliable operation. Notes for buyers Verify model number and OEM part number on your existing board or heater nameplate to confirm compatibility with the parts listed above. Package contains one control board and one film pad (420020029Z / 472610Z).