Setra System Model 470 - Manual (Page 11)

11
3.5 In Case of Error Messages
The following summary explains the meaning of error messages that you may receive from the
470 in response to a command, and also tells you what actions to take in response to the error
message.
Message Explanation What to Do
1. “UNABLE” The transducer cannot accept or Transmit C, to CLEAR the
execute a number or function previously transmitted data.
command it received, or you To execute setup or pressure
have attempted to execute measurement functions, first
a setup function or a pressure use the CONVERT function
measurement function while the so that the transducer is
transducer is reporting data in reporting data in units of
units of altitude. pressure.
2. “OFLO” The output data is over-ranged Convert to different pressure
or the user-conversion exceeds units.
the number of digits available.
3. “BUSY” The transducer is acquiring a Wait for the transducer to
stable reading, or is executing respond or transmit C, for
a function. CLEAR to stop the function
being executed.
4. “ERR” The sensor is damaged or not Contact Setra immediately
working properly for help in diagnosing the
problem, and for repair if
necessary.
5. “PROTEC” The program enable switch Set the program enable
(Section 7.2) is “ON” and must switch to “OFF”, transmit C,
be set to “OFF”. for CLEAR, to resume normal
operation.
6. “NO CAL” The program enable switch Set the program enable switch
(Section 7.2) is “OFF”, and to “ON” and transmit S, for
must be set to “ON” before SETUP to continue executing
the 470 can execute the the function, or don’t set the
previous command. program enable switch to “ON”
and transmit C, to resume
normal operation.
7. “D-NOS” The 470 has entered a self Transmit S, as in step 4 of
diagnostic routine (Section 5.5). Section 5.5 to allow the 470
to complete executing the
diagnostic described in that
section.