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the internal hygroscopic discs regulate air discharge based on moisture levels
Extended Lead Wires: 24-inch leads simplify installation and provide extra reach for complex control cabinet wiring
This is a spark electrode designed for high-voltage ignition systems
Common Questions & Troubleshooting Why is my furnace flashing a 'limit switch open' code
A faulty limit switch often causes the indoor blower fan to run continuously or prevents the burners from igniting
Johnson Controls T-4000-2141 Plastic Cover the internal hygroscopic discs regulateThe Johnson Controls T 4000 2141 is a commercial grade beige plastic thermostat cover designed specifically for horizontally mounted pneumatic thermostats. This impact resistant housing provides a professional finish for pneumatic control systems while protecting internal components from dust and debris. Engineered for the T 4000 series, the cover features a clean aesthetic with the Johnson Controls logo and a single set point window for clear
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