York YHAU-CL Series - Page 123

JOHNSON CONTROLS
123
SECTION 6 – OPERATION
FORM 155.30-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
6
BUTTON LABEL
(ALARM NAME)
CAUSE OF ALARM AND
CONDITION TO RESET
COUNTERMEASURES
High Cool. W.
Inlet Temp. (High
Cooling Water Inlet
Temperature)
Cooling water inlet temperature rose to the
upper limit or higher during cooling operation,
and the load limit operation was activated.
The alarm resets once the cooling water inlet
temperature drops.
•
Check the cooling water inlet temperature control
system.
• Check the cooling tower.
Gene. Hi Conce.
Prevent. (Generator
High Concentration
Prevention Control)
Generator solution concentration rose, then
load limit operation was applied. The alarm
resets if concentration has been lower than the
dened value for determined period.
• Check the cooling water line.
• Check the cooling water ow rate.
• Check the cooling tower.
•
Purge manually (according to instructions shown in
SECTION 7 – MAINTENANCE ).
• Contact your local Johnson Controls Service
Center.
Record. Sensor
Abnormal
(Recording Sensor
Abnormal)
Chilled water inlet temperature sensor,
cooling water inlet temperature sensor, and/
or absorber temperature sensor detected
abnormal value, due to disconnection, short
circuit, or other reasons. Remote setting signal
is abnormal during remote SP mode (remote
chilled water outlet temperature setting mode)
The hot water control valve opening limit
signal is abnormal while the upper limit input is
enabled. Alarm resets after the temperature or
signal returns to normal.
• Check the remote setting signal.
• Tighten the terminal.
• Contact your local Johnson Controls Service
Center.
Low Battery Voltage
Voltage level of the battery in the control board
fell. Press the ALARM RESET button after
replacement of the battery in the control board.
Replace the battery on the PWB.
ELB Trip
Earth leakage breaker for surge arrester was
activated.
Contact your local Johnson Controls Service Center.
Low Hot W. Inlet
Temp. (Low
Hot Water Inlet
Temperature)
The hot water inlet temperature dropped to its
lower limit or lower. The alarm resets when the
hot water inlet temperature rises.
Check the hot water inlet temperature control
system.
High Hot W. Inlet
Temp. (High
Hot Water Inlet
Temperature
Abnormal)
The hot water inlet temperature rose to its
lower limit or higher. The alarm resets when
the hot water inlet temperature falls.
TABLE 27 - ALARM LIST (CONT'D)