Gas Limit Furnace Thermostat for Bryant P331-2205 HH12ZA193A HH12ZB190 HH12ZA189

Gas Limit Furnace Thermostat | SHL503 | L190-40F | Replaces Bryant P331-2205, HH12ZA193A, HH12ZB190

Protect your furnace from overheating with this brand-new SHL503 gas limit thermostat. Rated L190-40F, this high-limit switch opens at 190°F and resets at 150°F, helping maintain safe operating temperatures in residential and light commercial heating systems. Compatible with Bryant® and other OEM brands, it’s a direct replacement for multiple part numbers and ensures reliable thermal protection.

⚙️ Features & Benefits:

• ✅ Opens at 190°F and resets at 150°F (40°F differential)
• Designed for use in gas furnaces and HVAC systems
• Durable construction with secure mounting tabs
• Brand New – Unused and ready to install
• Compact design for easy replacement and universal fit

Replaces Part Numbers:

P331-2205, HH12ZA193A, HH12ZB190, HH12ZA189, L190-40F

✅ Fits Models:

Compatible with select Bryant and other OEM-branded gas furnaces. Please refer to your unit’s service manual or model tag to confirm compatibility.

️ Installation Tips:

• Disconnect power and shut off gas supply before servicing
• Locate the existing limit thermostat on the furnace heat exchanger or plenum
• Remove mounting screws and disconnect wire terminals
• Install new thermostat in the same orientation and reconnect wires securely
• ✅ Restore power and gas, then test furnace operation and safety cutoff

Reliable protection. OEM-grade safety. Restore your furnace’s performance with this high-limit thermostat replacement.