Specifications

Printed in the U.S.A.

AE8-1368 R2

Rapid Compressor Cycling with

Constant Demand; Contactor Chatter

Inspect for:

• Loose connection in the contactor coil power circuit

• Loose connection at the white sensor module connector

that supplies 24V to the control module. Re-size the

connector pin sockets or replace the harness.

Reference 6.8 – Module Low Voltage Trip

• High pressure switch intermittent open circuit. Refer to

6.3, High Pressure Discharge Pressure Trip. After

verifying that high head pressures are not the problem,

temporarily bypass the pressure switch to see if the

switch is the root cause.

• Undersized transformer. Reference the appendix for

sizing of the transformer. This may occur if an unloader

has been added to the compressor as an aftermarket

upgrade.

• Auxiliary contactor miswired into the pilot circuit

6.31