Part of the Robertshaw 1830 Series

replacing an out-of-spec capacitor with this 4mfd 370v Oval Cap/W Bracket is critical for restoring system air flow and preventing premature motor failure in units like the Reznor UDAP or UDX series

maintaining strict operational tolerances

If the furnace is heating but the blower fails to engage—or stays on indefinitely after the call for heat ends—the time delay logic within this relay is likely compromised and requires replacement

Reznor 164792 Limit Switch Els PW 17895 Part of the Robertshaw 1830The Reznor 164792 Limit Switch is a critical safety component designed for high limit protection in unit heaters and industrial HVACR systems. As a genuine Reznor OEM replacement part, this L300F high limit switch is engineered to monitor heat exchanger temperatures and interrupt the burner circuit if conditions exceed a safe thermal threshold of 300F. This specific model features a 54 inch capillary tube, providing the necessary reach for precise