Thermcraft XST-3-0-36-3V - Manual (Page 67)

Operation Installation and Operation Handbook
2408 and 2404 Controller 2-19
no.io No I/O
None of the expected I/O
modules is fitted. This error message normally occurs when pre-
configuring a controller without installing any of
the required I/O modules.
rmt.F Remote input failure.
Either the PDSIO input, or
the remote DC input, is
open or short circuit Check for open, or short circuit wiring on the
PDSIO, or remote DC, input.
LLLL Out of range low reading Check the value of the input.
HHHH Out of range high reading Check the value of the input.
Err1 Error 1: ROM self-test fail Return the controller for repair.
Err2 Error 2: RAM self-test fail Return the controller for repair.
Err3 Error 3: Watchdog fail Return the controller for repair.
Err4 Error 4: Keyboard failure
Stuck button, or a button
was pressed during power
up. Switch the power off and then on, without
touching any of the controller buttons.
Err5 Error 5: Faulty internal
communications. Check printed circuit board interconnections. If
the fault cannot be cleared, return the controller
for repair.
Err6 Digital filter chip faulty or
loose board inside
controller Return the controller for repair.
Err7 PV id failure/PSU failure Return the controller for repair.
Err8 Module 1 id error Faulty or loose module or may be isolation
problem
Err9 Module 2 id error Faulty or loose module or may be isolation
problem
ErrA Module 3 id error Faulty or loose module or may be isolation
problem
DCF DC output fail Return the controller for repair
Tu.Er Tune error – shown If any
one stage of the auto-
tuning process exceeds
two hours Check response time of process: check that the
sensor has not failed: check that the loop is not
broken. Acknowledge by pressing ‘page’ key
and ‘scroll’ key together
P.br Potentiometer break Check that the feedback potentiometer is
correctly connected or the pot is not open circuit
Table 2-2 Diagnostic alarms