Johnson Controls York YHAU-C User Manual

Table 24: Alarm list
Button label (alarm
name)
Cause of alarm and condition to reset Countermeasures
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 defined value
for determined period
• Check the cooling water line.
• Check the cooling water flow rate.
• Check the cooling tower.
• Purge manually (according
to instructions shown in
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, power outage, and so
on. 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.
YHAU-C Single Effect Steam-Fired Absorption Chiller136

Johnson Controls York YHAU-C Specifications

General

Brand	Johnson Controls
Model	York YHAU-C
Category	Chiller
Language	English