6.2
TRICOR Systems Inc.
6.2
Blank LCD Display
If the display comes on without any characters visible, read section 3.2 about
display contrast. Perform the recommended adjustment procedures.
6.3
Warning Messages
Warning messages are generated when the Model 225 is first turned on and
when the self test is run in the menu mode. The warnings indicate a failure of a
test to obtain the correct response from the system. No warning message will
prevent the unit from operating with the exception of the message below:
System Critical Failure
Push Cancel To Continue
This message indicates that the unit software can not continue. The unit will be
reset when the
Cancel
button is pressed.
All other warnings allow the user to continue. A typical message is:
System Warning - 23
Push Cancel To Continue
This message indicates that the Model 225 is “out of calibration”. A list of all the
failure codes follows:
01 – The stored clock data is corrupted
02 – The clock battery has failed, time is invalid
03 – The clock hardware has failed
04 – The EEPROM data is corrupted (user preferences)
05 – The program checksum is corrupt
06 – The heater set point is out of range
07 – The cooler set point is out of range
08 – The 28v power supply is out of tolerance
09 – The 2.5v reference is out of tolerance
10 – The heater is on when commanded off
11 – The cooler is on when commanded off
12 – The cooler is off, but current is flowing
13 – The cooler stability test failed (+2 degrees)