Carrier hh18hv140 furnace disc limit switch l140 30f
Carrier hh18hv140 furnace disc limit switch l140 30f 2 150x150

Carrier HH18HV140 Furnace Disc Limit Switch, L140-30F, Normally Closed

SKU: HH18HV140

$100.00
Stock: 5 units

Description

  • The OEM Carrier HH18HV140 Furnace Disc Limit Switch is a critical system safety component engineered to prevent heat exchanger damage and hazardous overheating conditions inside Carrier, Bryant, and Payne gas furnaces.
  • Factory-calibrated to a precise L140-30F designation, this normally closed (N.C.) bi-metal disc switch automatically opens the electrical control loop to shut down the main gas valve if internal plenum temperatures spike to 140°F.
  • Once the system cools down by a 30°F differential to a safe 110°F threshold, the switch automatically resets to restore normal furnace operation.
  • Featuring premium high-temperature ceramic insulation and standard 1/4-inch male spade terminals, this authentic factory-authorized component resolves premature inducer cycling and high-limit lockout codes safely.

Specifications

Manufacturer / Brand

Carrier Corporation

Manufacturer Part Number / SKU

HH18HV140

UPC

662289505432

ASIN

B00GYY9W0Y

Switch Design Configuration

1/2-Inch Bi-Metal Disc Limit Control

Open Temperature Threshold

140°F (Opens to shut down the gas valve if the furnace overheats)

Reset Differential Window

30°F (Automatically closes/resets when the temperature drops to 110°F)

Industry Sizing Code Designation

L140-30F