Fit for:
This board is suitable for MasterTemp heaters: Mastertemp 200, Mastertemp 250, Mastertemp 300, Mastertemp 400. Sta-Rite Max-E-
Therm Heaters: SR200NA, SR333NA, SR400NA, SR200HD, SR333HD, SR400HD, 460805. As well as all NA and LP series pool/spa heater electrical systems

Solves Common Issues:
Addresses temperature adjustment failures, unresponsive buttons, and slow heating

Boosts Efficiency:
Reduces pump runtime and enhances heating performance to lower energy costs

Reliable Operation:
Fixes heater startup failures, unlit displays, and inconsistent temperature control

Installation Steps Power off the heater and open the top cover. Remove the old control board and disconnect wire connectors. Detach the membrane pad from the old board. Install the new board, reconnect wires, and secure the film pad.

Package Included:
1x 42002-0007S Control Board; 1x42002-0029Z/472610Z Film Pad

Upgraded Features:
Premium Power Module: Features high-quality filter capacitors and an LM2576HVS power chip for stable DC power.
Faster Control Response: Equipped with a high-performance optocoupler module for precise, rapid output regulation.

Durable Construction:
FR-2 copper foil laminate for superior conductivity.
Upgraded solid-state capacitors and precision soldering.
SR waterproof coating for enhanced moisture resistance and leak protection.

Performance & Quality:
Engineered with overheat, overvoltage, and short-circuit protection, this kit ensures:
Faster heating and more consistent temperature control.
Improved reliability for prolonged heater lifespan.
High-precision components that meet industry standards for durability.

Note:
This item is a replacement part. Please make sure the images are the same with what you want. If not, please do not purchase it even your model is in the described list