Thermcraft XST-6-0-36-3V - Manual (Page 68)

Operation Installation and Operation Handbook
2-18 2408 and 2404 Controller
Diagnostic alarms
These indicate that a fault exists in either the controller or the connected devices.
Display
shows
What it means What to do about it
EE.Er Electrically Erasable
Memory Error:
The value of an operator,
or configuration,
parameter has been
corrupted. This fault will automatically take you into
Configuration level. Check all of the
configuration parameters before returning to
Operator level. Once in Operator level, check all
of the operator parameters before resuming
normal operation. If the fault persists, or occurs
frequently, contact your supplier
S.br Sensor Break:
Input sensor is unreliable
or the input signal is out of
range. Check that the sensor is correctly connected.
L.br Loop Break
The feedback loop is open
circuit. Check that the heating and cooling circuits are
working properly.
Ld.F Load failure
Indication that there is a
fault in the heating circuit
or the solid state relay. This is an alarm generated by feedback from a
TE10S solid state relay (SSR) operating in
PDSIO mode 1 - see Chapter 1, Electrical
Installation. It indicates either an open or short
circuit SSR, blown fuse, missing supply or open
circuit heater.
SSr.F Solid state relay failure
Indication that there is a
fault in the solid state
relay. This is an alarm generated by feedback from a
TE10S solid state relay (SSR) operating in
PDSIO mode 2 - see Chapter 1, Electrical
Installation. It indicates either an open or short
circuit condition in the SSR.
Htr.F Heater failure
Indication that there is a
fault in heating circuit. This is an alarm generated by feedback from a
TE10S solid state relay (SSR) operating in
PDSIO mode 2 - see Chapter 1, Electrical
Installation. It indicates either a blown fuse,
missing supply, or open circuit heater.
Ct.OP Current Transformer Open
Circuit Indicates that the PDS input is open circuit.
Mode 5 only
Ct.Sh Current Transformer Short
Circuit Indicates that the PDS input is short circuit
Mode 5 only
Hw.Er Hardware error
Indication that a module is
of the wrong type,
missing, or faulty. Check that the correct modules are fitted.