JOHNSON CONTROLS
93
SECTION 3 - OPTIVIEW™ CONTROL CENTER FUNCTIONS AND NAVIGATION
FORM 161.01-OM1
ISSUE DATE: 6/8/2018
3
MESSAGE
DESCRIPTION
WARNING – MOTOR – HIGH
CURRENT LIMIT
The chiller motor current is greater than or equal to the Motor Overload current limit.
The Motor Overload current limit is predetermined from the motor model and Maximum
VSD Output Current. While this condition is in effect, chiller capacity control is in over-
ride to reduce current. Normal LCHLT capacity control operation is resumed and this
message automatically clears when the motor current decreases below this limit.
WARNING – MOTOR – HIGH
HOUSING TEMPERATURE
The Motor Housing Temperature is greater than or equal to 167°F (75°C). This warning
is released when Motor Housing Temperature is less than 167°F (70°C).
WARNING - MOTOR – HIGH
WINDING TEMPERATURE
This warning occurs when any of the enabled motor winding temperatures exceeds
250°F (121.1°C) for 3 continuous seconds. This warning will automatically clear when
all winding temperatures decrease below 232°F (111.1°C). It will not use any individual
winding temperature sensor that has been disabled with the TEMPERATURE DIS-
ABLED Setpoint on the Motor Details Screen.
WARNING - PURGE –
EQUALIZATION LOW
SUCTION TEMP
This warning occurs when the purge equalization period is complete but the purge suc-
tion temperature is < -7°F (-21.7 °C). The warning can be manually reset on the Home
screen when the purge suction temperature > 7°F (-21.7 °C). Possible causes: Inlet
Solenoid not functioning or a failed Purge Pump.
WARNING – PURGE - EXCESS
PURGE
This warning is displayed when the number of purges exceed 20 in a 24 hour period.
The warning may be manually reset. Possible causes: Large leak in chiller or a faulty
Purge Suction Line Temperature sensor.
WARNING – PURGE - HIGH
COIL TEMP
This warning is displayed when the Purge Coil Temperature is > -10°F (-23.3 °C) for 5
minutes after the Purge Compressor has been running for 5 minutes. The warning can
be manually reset on the Home screen. Possible causes: Purge system low on refrig-
erant, purge CPEV valve failure or incorrectly adjusted, purge strainer blocked, purge
condenser fan motor failed or dirty purge condenser coil.
WARNING – PURGE – HIGH
COIL TEMP - INHIBIT
This warning is displayed when the Purge Coil Temperature is > 0°F (17.8 °C) for 10
minutes after the purge compressor has been running for 5 minutes. The warning can
be manually reset on the Home screen. Possible causes: Purge system low on refrig-
erant, purge CPEV valve failure or incorrectly adjusted, purge strainer blocked, purge
condenser fan motor failed or dirty purge condenser coil.
WARNING – PURGE – HIGH
LEVEL
This warning is displayed when the Purge High Level Switch opens for 61 seconds or
more. The warning will automatically reset when the High Level Switch opens. Possible
causes: Level sensor failure, open sensor wire, restriction in the tank drain line.
WARNING – PURGE –
OPERATION INHIBITED
This warning is displayed whenever the purge system has been manually set to be
inhibited from running. The message will clear when the purge mode is no longer set to
inhibited.
WARNING – PURGE –
POSSIBLE AIR IN SYSTEM
This warning is displayed when the Condenser Saturation Temp > (Condenser Refriger-
ant Temp + Condenser Temperature Offset) for 24 hours. The warning may be manually
reset on the Home screen. Possible causes: Leaks in chiller system.
WARNING - UPS - BATTERY
TEST FAILED
This message is displayed whenever any step of the Battery Health Test fails or if the
Battery Health Test is interrupted by a power cycle during the test. The Warning will
clear when UPS Battery Health Test is successfully completed.
WARNING – UPS – BATTERY
NOT CONNECTED
This is an auto reset warning. The minimum and maximum Battery Voltage is read each
10 second window and stored. At the end of each 10 second window, if the difference
between the min and max battery voltage is greater than 0.5 V, a counter is increased.
If the difference between them is less than 0.5 V, the counter is reset to 0. This warning
is set when the Battery Disconnected Counter >= 4 (The intent is for 4 consecutive 10
second windows to see battery voltage fluctuations to set this fault. It is released when
the Battery Disconnected Counter is 0 for 60 continuous seconds.
WARNING – UPS – CHECK
BATTERY CONNECTION
This manual reset warning is set when Battery Voltage > 16.0 V. (Indicates only the UPS
output is connected to the battery leads). It is released when Battery Voltage < 16.0 V.
TABLE 9 -
WARNING MESSAGES
Summary of Contents for YZ MODEL A
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