Specifications

Printed in the U.S.A.

AE8-1368 R2

Phase Loss Trip / Lockout

A phase loss trip occurs if one or two phases of the motor are not

receiving voltage. The compressor will shut off and remain off for 5

minutes before trying again. If the phase loss occurs for 10

consecutive attempts, a lockout will occur. A lockout requires that

the module be reset to allow the compressor to run. Every

successful re-start will decrement the lockout counter by one.

Is full voltage present at

each terminal when the

contactor is loaded?

Voltage sensing

leads not

connected to motor

terminals.

Note that during a

light-load running

condition, the

missing-phase

voltage imbalance

may not be very

large

Normal Operation

Determine cause

of missing phase

or voltage

imbalance

YesNo

Missing Phase Voltage Imbalance

During Start-up

Missing Phase Voltage Imbalance

While Running

6.23