Chapter 7: Service and troubleshooting
140 P/N 3101890-EN • REV 006 • ISS 21JUN18
Label Source Description
Handset Off Hook FTCU The firefighter telephone is off the hook
Phone/Mic/Remote Mic
ACSprvs
EAEC Defective microphone or connections are
detected
Phone Page Time Out EAEC
The phone page switch activated for a period that
exceeded the time limit set in the VM-CU
Audio Hardware Mismatch EAEC N/A
RAM Diag Failure EAEC There is a memory failure on the EAEC
Audio Default Failure EAEC • The memory card is missing
• The audio database does not exist
All Call Minus EAEC The All Call Minus feature is activated
Audio Intrfce Failed to Start EAEC There is a VM-PMI hardware fault
Audio Class Supervision EAEC A short or open is detected on a riser
Waiting for SDU Download SLC A database download from the VM-CU is in
progress or incomplete
Open/Short Fault DataCard1 SLC A wiring fault is detected
Map Fault DataCard1 SLC • A mismatch between the actual data and
expected data occurred
• Wiring is defective
• A device is defective
Ground Fault DataCard1 SLC A wiring fault is detected
Smoke Power Current Limit
Card1
SLC N/A
Unused DataCard1 SLC N/A
Invalid Response Instruction CPU • A programmed response has an invalid
instruction
• The database is possibly corrupt
Open/Short Fault DataCard2 SLC • A short is detected on the circuit
• An open is detected on a Class A circuit
Main Board Internal Fault CPU The CPU on the control panel detected an
internal fault on the main board
Map Fault DataCard2 SLC •
There is a mismatch between the actual data
and expected data
• Wiring is defective
• A device is defective
Main Board Communication
Fault
CPU CPU daughter card communication with the CPU
main board failed
Network Compatibility Fault CPU The network option card is not compatible with
the network configuration
24V Auxiliary Output Fault
CPU The AUX board on the CPU is faulty (e.g.,
shorted)
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