HB-100/140/160Z1
Temperature Control Unit
Faults
O8285-EN 2017-12
117
Fault
Possible cause
Rectification
Rectified by
Overtemperature circuit Cooling water connection not
made correctly
Make the cooling water
connection properly
Qualified
personnel
Cooling valve 1 or cooling
valve 2 defective
Check cooling valve 1 or
cooling valve 2, replace if
necessary
Qualified
personnel
Temperature sensor not
calibrated properly
Calibrate temperature sensor
Qualified
personnel
Temperature sensor defective
Replace temperature sensor
Qualified
personnel
System pressure too
low
or
Initial filling time
exceeded
or
Filling time exceeded
Large external volume
Acknowledge alarm (for initial
filling time exceeded).
Operator
Mains water pressure too low.
Increase mains water
pressure.
Operator
Cooling water or system water
connection not made correctly
Make cooling water or system
water connection properly
(open cut-off valves where
available)
Operator
Quick-release connectors
used are closed or blocked
Check quick-release
connectors, clean or replace
as necessary
Qualified
personnel
Hose connections defective
Check hose connections for
leaks, replace as necessary
Operator
Filling pump defective
Repair or replace filling pump
Qualified
personnel
Pressure sensor not calibrated
properly
Calibrate pressure sensor
Qualified
personnel
Pressure sensor defective
Replace pressure sensor
Qualified
personnel
Filling cycle exceeded
Hose connections defective
Check hose connections for
leaks, replace as necessary
Operator