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.
MML135 – MANUAL LIMIT SWITCH (MICRO, 135°)
$14.97
Manual reset micro limit switch, opens at 135°F. Push-button reset after trip. Universal replacement for Supco SRL135 and Packard PRL135. Common in 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 135°F to protect your furnace from overheating. Press the reset button to restart after it trips.
Specs: Opens at 135°F, manual reset, micro size, SPST, 1/4″ quick-connect terminals
Replaces: PRL135, SRL135
Fits: Universal — works in most residential gas furnaces from Goodman, Carrier, Trane, Rheem, Lennox, York, and others using a micro-base L135 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.
