Page 32 of 41
Medusa 510/511 Series Iss.11 – 07/12
DIAGNOSTIC ALARMS
These indicate that a fault exists in either the controller, indicator or the connected sensor.
CONTROLLER ERROR MESSAGES
The instruments include powerful diagnostics and in the unlikely event of an internal failure, or a sensor error, one of
the following error messages may be displayed.
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
For Controller: Contact Isotech
For Indicator: Check Config Against Data in
Appendix
S.br
Sensor Break:
Input sensor is unreliable or the input signal is out
of range.
For Controller: Contact Isotech
For Indicator: Check a sensor is connected.
Check that only a PRT or a TC is Connected
(Not both)
HW.Er
Hardware error
:
Indication that a module is of the wrong type,
missing or faulty
Contact Isotech
LLLL
Out of Display range, low reading
For Controller: Contact Isotech
For Indicator: Check Sensor and Connections
HHHH
Out of Display range, high reading
For Controller: Contact Isotech
For Indicator: Check Sensor and Connections
Err1
Error 1: ROM self-test fail
Consult Isotech
Err2
Error 2: RAM self-test fail
Consult Isotech
Err3
Error 3: Watchdog fail
Consult Isotech
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: Input circuit failure
Consult Isotech
Pwr.F
Power failure
. The line voltage is too low
Check that the supply to the controller is within
the rated limits
