FORM 155.32-ICOM2.EN.UL
SECTION 8 – TROUBLESHOOTING
ISSUE DATE:1/10/2018
JOHNSON CONTROLS
163
Table 46 -
Chilled or Hot Water Time Out or Cooling Water Time Out
Table 47 -
Pump Interlocks
Table 48 -
Low Cooling Water Inlet Temperature
Table 49 -
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.
ITEM
CAUSE
COUNTERMEASURE
1
Pump abnormal
Check the water pump.
2
Insufficient water flow
• Check the water line.
• Check the water flow.
3
Water suspension relay abnormal
• Check the water suspension relay.
• Check to see if the pipe is clogged.
4
Water pump interlock abnormal
Check the water pump.
ITEM
CAUSE
COUNTERMEASURE
1
Water pump interlock was not established
Check the water pump interlock.
ITEM
CAUSE
COUNTERMEASURE
1
Cooling water inlet
temperature
control system is
abnormal
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, you will need to perform
the dilution process, see
Location of Manual Valve in Purging System
NOTE: The time required for refinement of the refrigerant depends on
the current load condition. Constantly check the liquid level in the re-
frigerant tank while the refrigerant is refined. If the refrigerant liquid
level appears in the level gauge of the refrigerant tank, close the valve
immediately and fully. If the refrigerant liquid level appears in the lev-
el gauge of the refrigerant tank, completely close the valve immedi-
ately.
ITEM
CAUSE
COUNTERMEASURE
1
Contact failure
Tighten terminal in control panel.
2
Sensor abnormal or disconnected
Contact your local Johnson Controls Service
Office.
3
Inductive noise