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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
Common indicators include heavy ice accumulation on the outdoor unit
Using the OEM 1-pole version preserves the intended circuit path
06 inches in length and 2
Ensures safe venting with a factory-calibrated 1
A trip is usually triggered by a cracked heat exchanger
Cleveland Controls DFS-231-121 Switch Els PW 17895 Common indicators include heavy iceThe Cleveland Controls DFS 231 121 is a fixed setpoint diaphragm differential pressure switch engineered for precision performance in HVAC pressure monitoring and combustion air applications. This SPDT air flow switch is factory calibrated to actuate on a pressure rise at 0. 05" . 02" w. c., providing a reliable safety interlock for systems requiring strict static pressure thresholds. Designed for versatility, the unit supports line voltage ranges