or the thermocouple failing to generate the 20-30mv required to hold the safety valve open

this contactor provides reliable control of compressors

1 Grade B accuracy (±3/2/3%) that technicians depend on during system diagnostics and preventative maintenance

The rotational direction is fixed according to OEM specifications

Is this pan compatible with gas furnaces or only electric air handlers

Johnson Controls A28AA-37 Temperature Control Refrigerant or the thermocouple failing toTemperature Control, Two Stage, 2 SPDT Switch Action, 120 208 240 277 Vac, 60 140 Degree Setpoint Range, 5 Degree Differential Each Stage, 2 7 Degree Adjustable Differential Between Stages, 3 8" x 4" Bulb, 6' Capillary Length, Knob Range Adjuster A28AA 37 is identical to A28AA 37C