York YHAU-CW - Page 126

JOHNSON CONTROLS
126
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
SECTION 6 – OPERATION
BUTTON LABEL
(ALARM NAME)
CAUSE OF ALARM AND
CONDITION TO RESET
COUNTER MEASURES
HG Hi Conce.
Prevent. (HG High
Concentration
Prevention Control)
High solution concentration and load limit
operation was activated. The alarm resets
after 600 seconds.
• Check the cooling water line.
• Check the cooling water ow rate.
• Check the cooling tower.
• Purge manually (according to instructions in
SECTION 7 – MAINTENANCE).
• Contact your local Johnson Controls Service Center.
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
abnormal sensor readings. Remote
setting signal was abnormal during remote
SP mode (remote chilled water outlet
temperature setting mode)
• Press the ALARM RESET button to clear
the alarm.
• 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 down.
• Press the ALARM RESET button to clear
the alarm after you replace the battery in
the control board.
Replace the battery on the PWB.
ELB Trip (Earth
Leakage Breaker
Trip)
The Earth leakage breaker for the surge
arrester activated.
Contact your local Johnson Controls Service Center.
TABLE 26 - ALARM LIST (CONT'D)