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Chapter 9. Diagnostics
Fault Descriptions for Discrete Faults
1, Loss of User Side Power
The GBC generates this error when there is a power loss on the field wiring side of a Genius I/O
block.
Correction
1) (Only valid for Isolated I/O blocks.) Initiate Pulse Test COMREQ #1. Pulse test may be enabled or
disabled at I/O block.
2) Correct the power failure.
2, Short Circuit in User Wiring
The GBC generates this error when it detects a short circuit in the user wiring of a Genius block. A
short circuit is defined as a current level greater than 20 amps.
Correction
Fix the cause of the short circuit.
4, Sustained Overcurrent
The GBC generates this error when it detects a sustained current level greater than 2 amps in the
user wiring.
Correction
Fix the cause of the over current.
8, Low or No Current Flow
The GBC generates this error when there is very low or no current flow in the user circuit.
Correction
Fix the cause of the condition.
10 hex, Switch Temperature Too High
The GBC generates this error when the Genius block reports a high temperature in the Genius Smart
Switch.
Correction
1) Ensure that the block is installed to provide adequate circulation.
2) Decrease the ambient temperature surrounding the block.
3) Install RC Snubbers on inductive loads.
20 hex, Switch Failure
The GBC generates this error when the Genius block reports a failure in the Genius Smart Switch.
Correction
1) Check for shunts across Genius output (pushbuttons).
2) Replace the Genius I/O block.
83 hex, Point Fault
The CPU generates this error when it detects a failure of a single I/O point on a Genius I/O module.
Correction
Replace the Genius I/O block.
GFK-2950C
February 2018
429
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