York YHAU-CW - Alarm

JOHNSON CONTROLS
124
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
SECTION 6 – OPERATION
BUTTON LABEL
(FAILURE
NAME)
OPERATION
AT FAILURE
OCCURRENCE
CAUSE COUNTER MEASURES
HG High
Temperature
Stop after
dilution
HG solution temperature rose
abnormally.
• Check the cooling water line.
• Check the cooling water ow rate.
• Check the cooling tower.
• Purge manually (according to instructions in
SECTION 7 – MAINTENANCE)
HG High Pressure HG pressure rose abnormally.
High Cut
HG high pressure relay was
activated.
Sol. Circu.
P. Abnormal
(Solution
Circulation Pump
Abnormal)
Stop without
dilution
Solution circulation pump
thermal relay, or overheat
switch was activated.
Contact your local Johnson Controls Service Center.
Sol. Spray
P. Abnormal
(Solution Spray
Pump Abnormal)
Solution spray pump thermal
relay, or overheat switch was
activated.
Refrigerant
P. Abnormal
(Refrigerant
Pump Abnormal)
Refrigerant pump thermal
relay, or overheat switch was
activated.
Control Sensor
Abnormal
Stop after
dilution
Temperature sensor and/
or pressure sensor detected
abnormal value due to
disconnection, short circuit, or
other applicable sensors.
• Tighten terminal in control panel.
• Contact your local Johnson Controls Service
Center.
CPU Abnormal
CPU was judged to be
abnormal.
Contact your local Johnson Controls Service Center.
SP Invert.
Abnormal
(Solution
Pump Inverter
Abnormal)
Stop without
dilution
The protection function of
the solution pump inverter
activated. Then, the inverter
output stopped.
• Check the alarm code of the inverter.
• Contact your local Johnson Controls Service
Center.
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.
TABLE 26 - FAILURE LIST (CONT'D)
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: