Trane CNT1662 High Limit The primary 120V side uses

The primary 120V side uses wire leads

Reduced Downtime: Reliable ignition reduces nuisance service calls and furnace ignition failures

filters should be inspected every 30 days

facilitating stable ignition and clean burning within your HVAC unit heater

drawing a consistent 150 watts to maintain oil viscosity without overheating

Trane CNT1662 High Limit The primary 120V side usesThe Trane CNT1662 High Limit is a critical safety component designed for precise thermal regulation within furnace and air handler heat exchangers. Built with an L250F SPST NC C High limit configuration, this switch acts as a failsafe by monitoring supply plenum temperatures and interrupting the 24V control circuit if levels exceed the 250F threshold. This immediate shutdown of the gas valve helps prevent structural damage to the primary heat