RT-SVP011E-EN 83
Troubleshooting
Comm Loss:
Condensate Overflow
Unit
Immediate
Shutdown
Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Unit operation is terminated immediately.
Note: VOM/EOM Behavior - During these modes this
diagnostic changes behavior to a Warning
diagnostic. The diagnostic will be generated but
the VOM/EOM mode will be honored.
Remote
Comm Loss: Condenser
Cooling Valve CktX
where X = “1” or “2”
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: Condenser
Fan Relay X CktY
where X is “1”, “2”, “3”
or “4”
where Y is “1” or “2”
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: Condenser
Re
heat Valve CktX
where X = “1” or “2”
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: Discharge
Air Temperature
Unit Warning Non-Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
If no other source for Discharge Air Temperature all
heating, cooling, and economizer capacity control is
terminated.
Remote
Comm Loss: Discharge
Pressure CktX
where X is “1” or “2”
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: Duct Static
Pressure Local
Unit Warning Non-Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Supply fan set to minimum speed. Will continue duct
static pressure control once communications is re-
established.
Remote
Comm Loss:
Emergency Stop
Unit
Immediate
Shutdown
Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Unit operation is terminated immediately.
Local
Comm Loss:
Evaporator Leaving Air
Temperature
[Single Evap]
Comm Loss:
Evaporator Leaving Air
Temperature
EvapX
[Split Evap]
where X = “A” or “B”
Unit Warning Non-Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Failed sensor with the other sensor available: The
good sensor will be used for reheat calculations.
Failed sensor with the other sensor not-available:
The DX cooling continues to run but reheat for
dehumidification is stopped.
Remote
Diagnostics Target Severity Persistence Condition / Response Reset Level
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