82 RT-SVP011E-EN
Troubleshooting
This section describes the possible error messages and other issues that you may encounter while
using the TD7 display.
Column Description
Diagnostics The actual text displayed on the Front Panel under Active Alarms and Historic Alarms.
Tar ge t The system or component directly affected by the diagnostic. Either none, partial or total unit functionality is impaired.
Severity
Warnings may or may not affect unit operation. Normal Shutdown will provide an orderly termination of component
control. Immediate Shutdown overrides all normal timers and component control and all outputs are turned off.
Components may have different responses based on the unit’s mode of operation (ex. Diagnostics during VOM).
Persistence
Latching diagnostics are not automatically cleared and require manual entry at the user interface and may require
troubleshooting. Non-latching diagnostics are typically cleared by normal unit operation.
Condition / Response
This describes the conditions the system or component was experiencing at the time the alarm is generated. The
response indicates what the unit, system or component will do during the alarm event.
Reset Level
Local requires manual entry at the Front Panel to clear a diagnostic. Remote can be cleared from other user interfaces
or from the Front Panel as well.
Identifying and Diagnosing Issues
Diagnostics Target Severity Persistence Condition / Response Reset Level
Airflow Assembly
Failure
Unit Warning Non-Latching
The unit is configured with Traq and the OA Damper
> 50% and the Outdoor Airflow Local <= 0.02 *
Design Air Flow for 10 consecutive seconds the
diagnostic will be generated.
The diagnostic will be cleared when Outdoor Airflow
> 0
.02 * Design Air Flow for 20 consecutive seconds.
Possible causes: Tubing failure, wiring, and
calibration solenoid failure. Approximately 0.25vdc
at 0.0 iwc. Increasing voltage with increasing
pressure.
Traq air flow control is inhibited and the unit will fall
bac
k to alternate minimum ventilation control.
Local
Comm Loss: Alarm
Relay
Unit Warning Non-Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
No unit response.
Remote
Comm Loss:
Changeover Wired
Unit Warning Non-Latching
Continual loss of communication between the
S
ymbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Source of changeover falls back to Front Panel
default.
Remote
Comm Loss:
Compressor Proving
CprsrXY
where X is “1” or “2”
where Y is “A”, “B” or
“C”
Circuit
Immediate
Shutdown
Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Circuit X operation is terminated immediately.
Remote
Comm Loss:
Co
mpressor Relay
Compressor XY
where X is “1” or “2”
where Y is “A”, “B” or
“C”
Circuit
Immediate
Shutdown
Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Circuit X operation is terminated immediately.
Remote
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