RT-SVP011E-EN 85
Troubleshooting
Comm Loss: Mixed Air
Temperature
[Single Evap]
Comm Loss: Mixed Air
Temperature EvapX
[Spilt Evap]
X = “A” or “B”
DX Cooling
Normal
Shutdown
Non-Latching
Continual loss of communication between the
S
ymbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Units with Single Evap: Rapid Restart economizer
cooling is not allowed.
Units with Split Evap: These units average the two
sensors to create an estimated Mixed Air
Temperature.
Temp X failed with the other sensor available: Rapid
Restart economizer cooling is allowed.
Temp X failed with the other sensor not-available:
Rapid Restart economizer cooling is not allowed.
Remote
Comm Loss: Outdoor
Air D
amper Feedback
Unit Warning Non- Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Outdoor air damper is commanded closed and
economizer operation is disabled.
Remote
Comm Loss: Outdoor
Air Humidity
Unit Warning Non-Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 - 35 second period.
This drives a ‘fall back’ response to Economizer
enthalpy decision.
Remote
Comm Loss: Outdoor
Air T
emperature
DX Cooling Warning Non-Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Economizing is disabled. All DX operation is inhibited.
Remote
Comm Loss: Outdoor
Airflow Pressure
Unit Warning Non-Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Traq air flow control is inhibited and the unit will fall
back to alternate minimum ventilation control.
Remote
Comm Loss: Power
Meter
Unit Warning Non-Latching
Continual loss of communication between the
Symbio™ 800 and the MODBUS
®
Server (power
meter) has occurred for a 30 second period.
No unit response.
Remote
Comm Loss: Pre Filter
Pressure Sensor
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: Relief Air
Damper
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.
Unit will command the damper closed and disable
Statitrac control.
Unit
Comm Loss: Relief Air
Damper Feedback
Unit Warning Non- Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Unit will command the damper closed and disable
Statitrac control.
Unit
Diagnostics Target Severity Persistence Condition / Response Reset Level
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