Control Board and Membrane Pad Replacement Kit for Pentair MasterTemp 420020007S and StaRite MaxETherm 420020029Z Pool Spa Heater

Replacement Control Board 420020007S with Switch Membrane Pad 420020029Z Overview Direct replacement control board 420020007S bundled with switch membrane pad 420020029Z for pool and spa heater electrical systems. Designed to restore control functions and user input responsiveness for compatible heaters. Key benefits Restores full control functionality: replaces a failed control board and associated membrane switch to bring the heater back to normal operation. Exact model compatibility: intended as a direct replacement for control module 420020007S and membrane pad 420020029Z in compatible heater electrical systems. Clear user interface response: the included membrane pad improves button contact and tactile feedback for reliable on site adjustments. Time and cost efficient : avoids full equipment replacement by enabling focused of the electrical control assembly. Straightforward fit: form factor and connector layout match the original control assembly used in compatible heaters for a simplified swap. Compatibility Compatible with specified pool and spa heater electrical systems, including Mastertemp, StaRite MaxETherm NA and LP models. Confirm the original control part number before to ensure correct fit. Function and performance Replaces the main control circuit that manages ignition sequencing, control inputs, and electrical connections within the heater system. Provides stable electrical interfacing between user controls and the heater control board when installed according to manufacturer wiring and service instructions. Includes the membrane switch pad that restores keypad responsiveness and reduces intermittent input issues caused by worn pads. What is included Control board 420020007S Switch membrane pad 420020029Z Installation and notes Intended as a replacement component for qualified technicians or experienced DIY installers comfortable with electrical diagnostics and heater disassembly. Verify power is disconnected before servicing. Match connectors and mounting points to the original assembly for correct installation. Inspect related wiring, fuses, and sensors during replacement to address root causes of control board failure. Typical applications Homeowner after a control board failure that prevents normal heater operation. Service technician performing routine maintenance or componentlevel replacement for a spa or pool heater. Parts inventory for pool maintenance businesses to reduce downtime when a heater control board needs quick replacement. the failed control module and membrane pad with the correct part numbers to restore reliable control operation in compatible pool and spa heaters.