If your furnace is short-cycling, check the filter first — a clogged filter causes the limit switch to trip. If the filter is clean, then the switch itself may be failing.
MML250 – MANUAL LIMIT SWITCH (MICRO, 250°)
$14.97
Manual reset micro limit switch, opens at 250°F. Push-button reset after trip. Replaces Supco SRL250 and Packard PRL250. Universal fit for furnaces and unit heaters.
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm | In-Store Pickup Only
Description
If your furnace is short-cycling (turning on and off repeatedly), a failed limit switch may be the cause. This manual reset switch opens at 250°F to protect your furnace from overheating. Push the reset button to restart — it won’t auto-reset.
Specs: Opens at 250°F, manual reset, micro size, SPST, 1/4″ quick-connect terminals
Replaces: PRL250, SRL250
Fits: Universal — works in most residential gas furnaces from Goodman, Carrier, Trane, Rheem, Lennox, York, and others using a micro-base L250 limit switch.
Need help? See our Furnace Short Cycling Guide.
In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.
