Alarm - York YHAU-CW Manual

SECTION 6 – OPERATION
TABLE 26 - FAILURE LIST (CONT'D)
BUTTON LABEL OPERATION
(FAILURE AT FAILURE
NAME) OCCURRENCE
HG High
Temperature
Stop after
HG High Pressure
dilution
High Cut
Sol. Circu.
P. Abnormal
(Solution
Circulation Pump
Abnormal)
Sol. Spray
Stop without
P. Abnormal
dilution
(Solution Spray
Pump Abnormal)
Refrigerant
P. Abnormal
(Refrigerant
Pump Abnormal)
Control Sensor
Abnormal
Stop after
dilution
CPU Abnormal
SP Invert.
Abnormal
Stop without
(Solution
dilution
Pump Inverter
Abnormal)

Alarm

When an alarm occurs, the type of alarm will light up
in the Alarm section of the screen. See Figure 54 on
page 147. There is no buzzer.
Press the lit alarm button to access an on-screen han-
dling guide for each item. An on-screen guide is avail-
able for every item in the Alarm section.
124
CAUSE
HG solution temperature rose
abnormally.
HG pressure rose abnormally.
HG high pressure relay was
activated.
Solution circulation pump
thermal relay, or overheat
switch was activated.
Solution spray pump thermal
relay, or overheat switch was
activated.
Refrigerant pump thermal
relay, or overheat switch was
activated.
Temperature sensor and/
or pressure sensor detected
abnormal value due to
disconnection, short circuit, or
other applicable sensors.
CPU was judged to be
abnormal.
The protection function of
the solution pump inverter
activated. Then, the inverter
output stopped.
After fixing the alarm, press the ALARM RESET
button to reset the lighted alarm button. If you press
the ALARM RESET button before fixing the prob-
lem, the lit alarm button will not go out.
The alarms addressed in the Alarm section of the
screen are:
FORM 155.31-ICOM2.EN.UL
COUNTER MEASURES
• Check the cooling water line.
• Check the cooling water flow rate.
• Check the cooling tower.
• Purge manually (according to instructions in
SECTION 7 – MAINTENANCE)
Contact your local Johnson Controls Service Center.
• Tighten terminal in control panel.
• Contact your local Johnson Controls Service
Center.
Contact your local Johnson Controls Service Center.
• Check the alarm code of the inverter.
• Contact your local Johnson Controls Service
Center.
ISSUE DATE: 12/21/2018
JOHNSON CONTROLS