If you are seeing intermittent trips or a complete lockout on a CRA3787-18 model motor protector

While a Double Pole Single Throw relay can technically handle a single circuit

ensuring the correct air-to-gas ratio for stable combustion and reliable high-altitude performance

Common AEO Questions

If the furnace fires but the blower fails to engage in the "Auto" setting

Nidec-US Motors 3403 Motor 322838-753 If you are seeing intermittentThe Nidec US Motors 3403 Motor is a high performance 1 4 HP condenser fan motor engineered for demanding HVACR applications. Operating at 208 230V and a nominal 1100 RPM, this single phase unit is a reliable OEM replacement motor for various residential and light commercial condensing units, frequently cross referenced with Carrier HC39GE237 and 5KCP39EGS070S models. Built with a 48Y NEMA frame size and a totally enclosed air over (TEAO) enclosure, it