Page 36 579-1102 Rev H
4007ES and 4007ES Hybrid Fire Alarm Systems Installation Manual
6.10Troubleshooting
The code produced by the illuminated indicator LEDs corresponds to a trouble occurring on the system. See Table on page 36 for the IDNet LED
definitions, and see Table on page 36 for the 4007ES trouble messages.
Table 28: LEDs on the 4007ES power supplies
Comm trouble
Normally off. Turns on steady if the IDNet is
not communicating with the FACP CPU.
IDNet trouble
Normally off. Illuminates to indicate a problem
with the IDNet channel:
• Channel failure.
• Line short.
• Class A failure or an open line.
Earth fault+ Illuminates to indicate a positive earth fault.
Earth fault - Illuminates to indicate a negative earth fault.
IDNet LEDs: A, B, and C
Steady ON: Indicates an open or short
condition on indicated loop.
Fig 31: LEDs on the 4007ES power supplies
Table 29: 4007ES system trouble messages
Message Definition
AC Fail AC power is not present or is too low for proper system operation.
Low Battery The battery voltage is below the 22.8 V nominal level by 10% or more.
Depleted/Missing Battery The battery is either below 19.4 V or completely undetected.
Card Overcurrent The module is drawing more current than it should. Check for faults on the circuit.
Charger trouble
The battery charger is either defective or being heavily loaded by batteries. Read charger current at front panel,
if charger current is approximately 1.4 A, batteries are likely loading the charger. Remove battery connection and
measure the output. If the output is 27.6 (or close, temperature dependent), there is a possibility of depleted
batteries or a bad set of batteries. Allow batteries to charge or replace them if they do not take a charge.
If the current is ~1.4 A with batteries and charger voltage below 20 V, remove the batteries and recheck the charger
voltage. If the voltage is around ~27.3 V, then the batteries are heavily depleted.
Extra Device
Appears if one or more extra devices (i.e., devices that have not been configured for the IDNAC or IDNet channel) are
on the system. Only one message appears, regardless of the number of extra devices found.
Earth Fault Search
Comes up during the Earth Fault Search diagnostic function. Once the search is initiated, the front panel display
indicates how far along the search process has progressed (10%, 25%…75%), and then shows the results of the
search. The result either identifies the offending circuit or indicates that the earth fault could not be found. During
the search of circuits (IDNet, NAC, IDNAC, and aux power), system alarm and trouble processing is suspended.
Positive Earth Appears when a positive earth fault is detected.
Negative Earth Appears when a negative earth fault is detected.
Short Circuit
Appears when a short is detected on the IDNAC/NAC channel. This status clears automatically when the short circuit
is removed.
Channel Fail
Appears when each device on the IDNet channel has been configured, and when none of the devices are
communicating on the channel. This message does not appear if there are no configured devices on the IDNAC
channel.
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