Description
enabling advanced configuration of multi-stage heat pumps and furnaces
The AV-400 is specifically engineered for use with the MK-2690 pneumatic actuator series
Rotation is determined by looking at the blower wheel from the hub/motor side
Installing it on a 240V circuit may lead to premature motor failure due to over-voltage
This regulator is compatible with a broad range of fuels
York S1-7660-3591 Limit R-407C enabling advanced configuration of multi-stageThe York S1 7660 3591 is a precision calibrated bimetal high limit switch replacement designed for high cycle reliability in residential and light commercial furnaces. This safety critical L150 20F limit control is engineered with a snap acting disc that opens the burner circuit at a 150F operating threshold and automatically closes at a 130F reset point. As a direct fit Johnson Controls HVAC part, this unit serves as the factory authorized
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy

























