Trane CNT1662 High Limit Reduced Downtime: Reliable ignition reduces

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

facilitating stable ignition and clean burning within your HVAC unit heater

While designed for Rheem-Ruud specifications

filters should be inspected every 30 days

ensuring a direct fit for field repairs

Trane CNT1662 High Limit Reduced Downtime: Reliable ignition reducesThe 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