Designed for natural gas (NAT) systems

Always verify the voltage on the motor nameplate and the control board output before installation to prevent electrical failure

Key Benefits for HVAC Professionals Precise Thermal Calibration: Engineered with a strict 190°F trip point to protect the heat exchanger from structural damage due to overheating

standard models do not require an electrical ground for safe operation

preventing premature motor failure caused by off-brand alternatives

Friedrich Air Conditioning 68700208 Main Board 321702-401 Designed for natural gas (NAT)When you are troubleshooting a Friedrich ZoneAire Premier Series PTAC that has lost communication between the thermostat and the mechanical components, the Friedrich Air Conditioning 68700208 Main Board is the primary investigative point. This genuine OEM replacement control board (cross referenced as 30132164) is the central logic hub for the system, regulating the compressor cycles, fan speed delays, and safety protocols. Whether you are dealing