the 626513R limit switch may have failed open or is tripping due to restricted airflow

you can upgrade to a higher VA rating like the Packard PM12440 as it provides more available power (apparent power) for the circuit

Will this capacitor work for both fan motors and compressors

Common Questions: Which furnace models use the B2589342 orifice

Built on the reliable 74T11-310724 (Style 74T11) platform

IDEC Relays RH4B-UAC120V Relay the 626513R limit switch mayThe IDEC RH4B UAC120V is a heavy duty 4PDT (4 Form C) compact power relay engineered for high density industrial control panels and HVACR logic circuits. Rated for 10 Amp switching capacity, this RH Series relay features blade terminals designed for secure interface with standard socket mounts such as the SH4B 05. Its 120VAC coil is optimized for precise actuation in 50 60Hz systems, providing a mechanical life of up to 50 million operations. With a