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.
MML300 – MANUAL LIMIT SWITCH (MICRO, L300°)
$16.26
Manual reset micro rollout limit switch, opens at 300°F. Crosses to Goodman B1370145 and York S1-026-34027-000. Fits Goodman, Amana, and York furnaces.
10226 Plano Rd, Suite 104, Dallas TX 75238
Questions? Call or text (214) 340-9421
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm
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 300°F — used as a flame rollout safety. Manual reset forces you to investigate before restarting.
Specs: Opens at 300°F, manual reset, micro size, SPST, 1/4″ quick-connect terminals
Replaces: B1370145, PRL300, S1-026-34027-000, S1-02634027000
Fits: Goodman: G8C07516MUC11A; York/Source1 models calling for S1-026-34027-000. Universal micro-base L300 rollout replacement.
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.
