V
09/2011
16
•
Operating Instructions
Temperature Control Unit 300L(D)/350L(D)
Alarm list
Pressing the
Alarm Reset
button opens the alarm list, as long as there is
no active alarm. The last ten alarm messages are displayed in this list,
complete with date and time.
Warnings
Error message
Remedy
Service is due
Carry out maintenance procedure according to the
operating manual. Increment the parameter
Next ser-
vice
by 2000 hours
Clean the filter
Clean the corresponding filter or if required, replace it
Current settings lost
factory settings loaded
The RT100 control system has lost the parameters
and had to load the factory settings
Outlet pressure sensor failure
Replace outlet pressure sensor
Heating contactor 1 failure
The Heating 1 contactor is no longer switching cor-
rectly - replace
Heating contactor 2 failure
The Heating 2 contactor is no longer switching cor-
rectly - replace
Illegal or broken characteristic curve F1000
Switch the main switch off and on again. If the fault is
still present, re-load characteristic curve F1000
Pump power too low
Check/inspect the pump or in the menu F1000 reduce
the pump tolerance parameter (default 50%)
Deviation set-point/outlet underrun
Adjust the outlet temperature and acknowledge the
fault
Deviation set-point/outlet exceeded
Adjust the outlet temperature and acknowledge the
fault
Deviation set-point/external underrun
Adjust the external temperature and acknowledge the
fault or error
Deviation set-point/external exceeded
Adjust the external temperature and acknowledge the
fault or error
Deviation set-point/inlet underrun
Adjust the inlet temperature and acknowledge the
fault
Deviation set-point/inlet exceeded
Adjust the inlet temperature and acknowledge the
fault
Deviation outlet/inlet underrun
Adjust the inlet temperature and acknowledge the
fault
Deviation outlet/inlet exceeded
Adjust the inlet temperature and acknowledge the
fault
Level 2 underrun
Top up heat transfer fluid
Pressure compensation not possible
Check water inflow pipe and water pressure (min. 2
bar)
Alarms
Error message
Remedy
Switch over heat carrier - reboot of the machine re-
quired
The device type was changed in the configuration
(water/oil as heat transfer medium); the unit must be
switched off and then on again using the main switch
External set-point signal disconnected or not available
External set-point signal must be present (if required,
check external control system)
Analog option missing or defective
Connect analogue option or switch it off in the
Hard-
ware Options
parameter
