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Ships within 48 hours · Estimated delivery Sep 4 - Sep 9
the relay includes barbed nipples for 1/4" O
ensure the thermostat wiring hasn't exceeded the maximum recommended length for 750mV systems
On-board LED diagnostics simplify troubleshooting by providing clear flash codes for system faults
it carries a 680 PSI maximum working pressure
Carrier HH18HA226 Rollout Switch 322056-301 the relay includes barbed nipplesThe Carrier HH18HA226 Rollout Switch is a critical safety component designed for Carrier, Bryant, and Payne gas furnaces. Engineered to detect flame rollout conditionswhere burner flames escape the heat exchangerthis Single Pole Single Throw (SPST) switch protects the heating unit and surrounding structure from high temperature damage. This specific model triggers an open circuit at 320 degrees F, immediately interrupting the gas valve circuit to stop
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