Table 30 - Failure List - York EX Series Installation, Operation & Maintenance Instructions Manual

SECTION 6 – OPERATION

TABLE 30 - FAILURE LIST

OPERATION
FAILURE
AT FAILURE
NAME
OCCURRENCE
Chilled/Hot
Water Time
Out
Cooling Water
Time Out
Not start
Ignition Time
Out
Ignition
Condition
Unsatisfied
Operation
Interlock
Stop after
dilution
Cooling Water
Pump Interlock
Chilled/
Hot Water
Suspension
Chilled Water
Stop without
Overcooled or
dilution
High Hot Water
Temperature
Refrigerant
Overcooled
Constantly
Monitoring
Interlock
Stop after
dilution
Combustion
Monitoring
Interlock
110
CAUSE
Chilled/Hot water pump
operation interlock and/or the
chilled/hot water suspension
relay was not established
within a set time while start-up.
Cooling water pump operation
interlock was not established
within a set time while start-up.
Combustion signal was not
established within 3 minutes
after combustion command
output, due to malfunction
of air pressure switch and/or
control motor.
Ignition condition, such as
shut-off valve fully-close limit
switch, was not established at
ignition command output.
Operation interlock was not
established during solution
pump automatic operation.
Cooling water pump interlock
was not established during
cooling water pump operation
command output.
Chilled/Hot water flow
suspension had been detected
continuously during solution
pump automatic operation.
Chilled water outlet
temperature was abnormally
low during cooling operation.
Hot water outlet temperature
rose abnormally during heating
operation
Low refrigerant temperature
during cooling operation, and
then refrigerant overcool relay
was activated
Constant monitoring interlock
was not established.
Combustion monitoring
interlock was not established
during combustion.
COUNTER MEASURES
• Check the chilled/hot water pump.
• Check the chilled/hot water line.
• Check the chilled/hot water flow.
• Check the chilled/hot water suspension relay.
• Check whether or not the pipe is clogged.
• Check the cooling water pump.
• Check the cooling water line.
• Check the cooling water flow.
• Check the cooling water suspension relay.
• Check whether or not the pipe is clogged.
Contact your local Johnson Controls Service Center.
• Check the fuel mode of burner and control panel.
• Contact your local Johnson Controls Service Center.
Check interlocked equipment.
Check the cooling water pump interlock.
• Check the chilled/hot water pump.
• Check the chilled/hot water line.
• Check the chilled/hot water flow.
• Check the chilled/hot water suspension relay.
• Check whether or not the pipe is clogged.
• Check equipment in cooling load line.
• Check the chilled/hot water flow.
• Check the chilled/hot water flow control system.
• Contact your local Johnson Controls Service Center.
• Check the chilled water line.
• Check the chilled water flow.
• Contact your local Johnson Controls Service Center
• Check the components of the constant monitoring
interlock.
• If any of the components are not working, contact
your local Johnson Controls Service Center.
• Check equipment connected as combustion
monitoring interlock components.
• Contact your local Johnson Controls Service Center.
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
JOHNSON CONTROLS