Daikin-McQuay 107895701 Limit Switch Els PW 17895 What was the main change

What was the main change between the 663865 and the 663865R

Swapping in a new SP11700 verifies the control side of the circuit is functioning correctly

while it is optimized for units up to 21

Can the manual opener remain installed during normal operation

Built for high-cycle reliability

Daikin-McQuay 107895701 Limit Switch Els PW 17895 What was the main changeThe Daikin McQuay 107895701 Limit Switch is a critical safety component designed for high limit temperature monitoring in commercial HVAC systems. This 140 175F AUTO limit switch functions as a normally closed contact that opens when temperatures exceed the 175F threshold, protecting the heat exchanger and internal components from thermal damage. Engineered for automatic reset functionality, this fixed temperature switch eliminates the need for manual