Johnson Controls P170DA-400 Pressure Control 30067439-890 If you are servicing a

If you are servicing a dual-dial or dual-element thermostat

Use a multimeter to perform an ohm check at the back of the controller pins

Integrated with internal pressure-sensitive interrupters

Always ensure the system is depressurized before maintenance

and manual reset function remain the same

Johnson Controls P170DA-400 Pressure Control 30067439-890 If you are servicing aThe Johnson Controls P170DA 400 Pressure Control is a heavy duty high pressure cutout switch engineered for critical over pressure protection in commercial refrigeration and HVAC systems. As a manual reset pressure control, it provides a hard lockout when system pressures exceed the technician defined setpoint, preventing compressor damage and ensuring a thorough inspection before the system returns to service. This SPST high pressure control features