Table 44 - Chilled Or Hot Water Time Out Or Cooling Water Time Out; Table 45 - Pump Interlocks; Table 46 - Low Cooling Water Inlet Temperature; Table 47 - Abnormal Control Sensor - York EX Series Installation, Operation & Maintenance Instructions Manual

FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
TABLE 44 - CHILLED OR HOT WATER TIME OUT
OR COOLING WATER TIME OUT
ITEM CAUSE
1 Pump abnormal
2 Insufficient water flow
3 Water suspension relay
abnormal
4 Water pump interlock
abnormal

TABLE 45 - PUMP INTERLOCKS

ITEM CAUSE
1 Water pump interlock was not
established
TABLE 46 - LOW COOLING WATER INLET
TEMPERATURE
ITEM CAUSE
1 Cooling water inlet
temperature control system is
abnormal

TABLE 47 - ABNORMAL CONTROL SENSOR

If these problems occur, the absorption chiller-heater
performs the dilution operation and then stops. Go to
the Control Center immediately and confirm that the
dilution took place. If the dilution operation did not
run, dilute the solution. Use the procedure shown in
Manual Refrigerant Blow Down and Diluting Method
on page 142 .
ITEM CAUSE
1 Contact failure
2
Sensor abnormal or
disconnected
3 Inductive noise

TABLE 48 - CPU ABNORMAL

ITEM CAUSE
1 Control board malfunction
JOHNSON CONTROLS
COUNTERMEASURE
Check the water pump.
• Check the water line.
• Check the water flow.
• Check the water suspension relay.
• Check to see if the pipe is clogged.
Check the water pump.
COUNTERMEASURE
Check the water pump interlock.
COUNTERMEASURE
Check the cooling water inlet temperature control system. If this problem
occurs, the absorption chiller-heater performs the dilution operation
automatically and then stops. Go to the Control Center immediately to
confirm that the dilution took place. If it did not, dilute the solution according
to the procedure shown in Manual Refrigerant Blow Down and Diluting
Method on page 142 .
COUNTERMEASURE
Tighten terminal in control panel
Contact your local Johnson Controls Service Office.
COUNTERMEASURE
Contact your local Johnson Controls Service Office.
SECTION 8 – TROUBLESHOOTING
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