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997-340-001, Issue 8
April 1998
ID1000 Series Operating Manual
FAULT CODES - POSSIBLE CAUSES & REMEDIES
1
Loop card missing or failed to respond. Possible causes are:
- Wrong ribbon cable connected
- Ribbon cable disconnected
- Loop card failure.
For last case, change the loop card.
5
Loop card CPU power restart. Possible cause:
- Loop card failure
Change the loop card.
9
A short circuit has occurred on loop X. If isolators are fitted, the system shows NO
REPLY/MISSING for the devices located between the isolation points.
Disconnect the affected section of the loop and use a meter to find the fault.
13
This indicates that a device has been installed without setting a valid address, i.e. left at
factory default of ‘00’.
17, 21
Either fault code indicates a loop card failure.
Replace the loop card.
25
Data returned from a loop device is being corrupted over a period of time. Check:
- The continuity of loop screens
- The screen is connected to earth at one point only (normally at the panel)
- Ferrite suppressors are fitted to loop wiring at the control panel.
32
This fault indicates that the peripheral unit has not responded to the enquiry code sent or
the link to the third party equipment is not connected (this would normally indicate a fault
in the external device).
First check by replacing the unit with an RS232 monitor or device that is known to work.
If this checks out OK, replace unit. If not, change the CPU PCB.
33
This indicates that the incoming supply has failed. Check the following:
- Blown mains fuse (FS1)
- Failed 240VAC mains supply failure
- Failed PSU transformer
34
This fault indicates the occurence of one or more of the following:
- Battery charger fuse (FS5) has blown
- Faulty PSU PCB
- Faulty batteries
Replace items as required.
35
Check fuse FS6 on the PSU PCB. If OK, check the 24V regulator or PSU PCB.
Replace as necessary.
36
This fault code indicates one of the following conditions has occurred:
- No continuity exists between the 24V AUX output and 24V monitored input
- 27V AUX supply fuse (FS2) has blown
- Faulty PSU PCB.
37, 38, 39
Should any of these faults occur change the Display/RS485 PCB assembly (PN 124-153).
34