100 RT-SVP011E-EN
Troubleshooting
VFD Fault Condenser
Fan - CktX
where X is “1” or “2”
Circuit Warning Latching*
The condenser fan VFD on circuitX indicates a general
VFD Fault.
Numerous drive faults can cause this general fault.
Reference the TR170 Installation and Operating
manual for a list of fault codes and descriptions.
Condenser fan control will revert to fixed-speed fan
algorithm using remaining fans.
* The Latching behavior for this diagnostic is latched
in the drive. When the drive diagnostics are reset this
diagnostic will be cleared in the Symbio™ 800
controller by setting its persistence to Non-Latching.
Local
VFD Fault Relief Fan – X
where X is “1”, “2” or
“3”
Unit Warning Latching*
Relief fan X indicates a general Fault.
Numerous drive faults can cause this general fault.
R
eference the EBM-PAPST Installation and Operating
manual for a list of fault codes and descriptions.
(Clears on Reset)
Failure of fan X with other fans available: No action.
Failure of fan X with other fans not-available: Relief
dampe
r is closed, relief fan commanded off and the
Economizing will be disable and the outside air
damper will be driven to the active minimum
position.
* The Latching behavior for this
diagnostic is latched
in the drive. When the drive diagnostics are reset this
diagnostic will be cleared in the Symbio™ 800
controller by setting its persistence to Non-Latching.
Local
VFD Fault Supply Fan –
X
where X is “1” or “2”
Unit Warning Latching*
Supply fan X VFD indicates a general Fault.
Numerous drive faults can cause this general fault.
R
eference the TR150 Installation and Operating
manual for a list of fault codes and descriptions.
Failure of fan X with the other fan available:
Generate a “Supply Fan X Proving Failure” on the
failed fan, allow the working fan to continue and lock-
out all heating operation.
Failure of fan X with the other fan not-available:
Generate a “Supply Fan X Proving Failure” on the
failed fan and shutdown the unit.
*The Latching behavior for this diagnostic is latched
in the drive. When the drive diagnostics are reset this
diagnostic will be cleared in the Symbio™ 800
controller by setting its persistence to Non-Latching.
Diagnostics Target Severity Persistence Condition / Response Reset Level
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