The Aaon P58190 Ignition Control is a high-performance OEM replacement part engineered specifically for AAON heating and cooling systems

When selecting a refrigerant receiver tank

In-Line Serviceability: Designed for easy access to internal components without removing the valve body from the piping

ideal for locations where three-phase power is unavailable

low-resistance interface in the field

Lennox 10M77 Limit Control 320788-703 The Aaon P58190 Ignition ControlThe Lennox 10M77 Limit Control (part number 10M7701) is an OEM standard L150 40F snap disc safety switch engineered for high performance thermal regulation in residential and commercial furnaces. This high limit cutout opens the circuit at 150F and features a 40F differential, ensuring the heat exchanger remains within safe operational parameters to prevent structural fatigue and secondary damage. As a critical HVAC safety component, this fixed