FORM 160.77-O2
ISSUE DATE: 11/15/2011
JOHNSON CONTROLS
116
SECTION 5 - DISPLAY MESSAGES
Primary Compressor Thrust Reverse Alarm
This message is generated when the thrust probe dif-
ferential is less than 23mils.
Primary Compressor Thrust Reverse Trip
This message is generated when the thrust probe dif-
ferential is less than 25mils. Requires a login access
level of Service to reset. Qualified service technicians
refer to YKEP control panel service manual 160.77-
M2 for further explanation and recalibration procedure
instructions.
Primary Compressor Thrust Forward Alarm
This message is generated when the thrust probe dif-
ferential is greater than than +8mils.
Primary Compressor Thrust Forward Trip
This message is generated when the thrust probe dif-
ferential is greater than than +10mils. Requires a login
access level of Service to reset. Qualified service tech-
nicians refer to YKEP control panel service manual
160.77-M2 for further explanation and recalibration
procedure instructions.
Primary Compressor Thrust Uncalibrated
This message will be present at the factory prior to the
initial proximitor calibration.
Primary Compressor Thrust Trip
(call Factory Service)
This message can only be cleared by factory techni-
cal support. Requires a login access level of Service
to reset. Qualified service technicians refer to YKEP
control panel service manual 160.77-M2 for further ex-
planation and recalibration procedure instructions.
Primary Compressor Proximitor Calibration
Active
This message is generated when the Primary Compres-
sor Prox Probe calibration procedure is still in the pro-
cess of calibration.
Primary Compressor Proximitor Calibration
Out of Range
The Primary Compressor Prox Probe is indicating a
voltage that is less than 0.4 V, or greater than 4.4 V. This
is outside the normal operating range of the Primary
Compressor Prox Probe. This is generally indicates a
defective proximity probe, damaged coaxial cable, or
poor connection between the probe and transmitter.
Secondary PRV Calibration Completed
This message is generated when the HS PRV calibra-
tion procedure has been completed.
Secondary VGD Calibration Started
This message is generated when the HS VGD calibra-
tion procedure has begun, and is still in the process of
calibration.
Primary PRV Calibration Started
This message is generated when the LS PRV calibra-
tion procedure has begun, and is still in the process of
calibration.
Secondary VGD Calibration Completed
This message is generated when the HS VGD calibra-
tion procedure has been completed.
Primary PRV Calibration Completed
This message is generated when the LS PRV calibra-
tion procedure has been completed.
Primary VGD Calibration Started
This message is generated when the LS VGD calibra-
tion procedure has begun, and is still in the process of
calibration.
Primary VGD Calibration Completed
This message is generated when the LS VGD calibra-
tion procedure has been completed.
Secondary PRV Calibration Started
This message is generated when the HS PRV calibra-
tion procedure has begun, and is still in the process of
calibration.
Secondary Stall Sensor High
This message is generated when there is a warning of
an impending trip of 180 PSIG.
Secondary Stall Sensor Very High
This message is generated when there is a warning of
an impending trip of 200 PSIG.