RT-SVP011E-EN 87
Troubleshooting
Comm Loss: Suction
Temperature 2 CktX
where X is “1” or “2”
[Split Evap Only]
Circuit Immediate 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 inhibited.
Remote
Comm Loss: Supply Fan
Bypass Proving
Pressure
Unit Warning Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
Unit operation is inhibited.
Remote
Comm Loss: Supply Fan
VFD Bypass
Unit Warning Latching
Continual loss of communication between the
Symbio™ 800 and the VFD has occurred for a 30
second period.
Unit operation is inhibited.
Remote
Comm Loss: System
Mode Wired
Unit Warning Non-Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 second period.
System Mode Active will fall back to front panel
default.
Remote
Comm Loss: VAV Box
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.
Unit no response.
Remote
Comm Loss: Ventilation
Override Input
Unit
Normal
Shutdown
Non-Latching
Continual loss of communication between the
Symbio™ 800 and the LLID/Hex IO has occurred for
a 30 - 35 second period.
The unit will enter “Run Inhibit” mode and terminate
all operation.
Remote
Comm Loss: VFD
Co
mpressor Cprsr1A
Cprsr Normal Latching
Continual loss of communication between the
Symbio™ 800 and the VFD has occurred for a 30
second period.
Additional compressors on this circuit are available
for DX operation.
Remote
Comm Loss: VFD
Condenser Fan - X
where X is “1” or “2”
Circuit Warning Latching
Continual loss of communication between the
Symbio™ 800 and the VFD has occurred for a 30
second period.
Condenser fan control will revert to fixed-speed fan
algorithm using remaining fans.
Remote
Comm Loss: VFD
Supply Fan - X
where X is “1” or “2”
Unit Normal Latching
Continual loss of communication between the
S
ymbio™ 800 and the VFD has occurred for a 30
second period.
Failure of fan X with the other fan available: Generate
“Supply Fan X Proving Failure” diagnostic and lockout
heat operation.
Failure of fan X with the other fan not-available:
Generate “Supply Fan X Proving Failure” and
shutdown the unit.
Remote
Diagnostics Target Severity Persistence Condition / Response Reset Level