CM4 Four-Point Continuous Monitor
CM4 Technical Manual
B-2
B.1 Fault Codes
Table B-1 lists the CM4 fault codes with possible cause(s) and corrective action(s).
Fault
No.
Description
Possible Cause
Corrective Action
Relay
Activated
Beeping
Audio
Alarm
Yellow
Status
LEDs
1
No Points Enabled
Programming Error
Enable Point in SET-UP
FAULT
(RY10)
On
Solid
2
N/A
3
BBRAM CSUM Error
Power Interrupted during Programming Reset System (
)
Call Local Service Agent
Note:
If this fault appears, user-programmed information has
reverted to factory-set selections.
FAULT
(RY10)
On
Solid
4
Background Fail
Chemcassette
®
Expired
Dirty Optics
Replace Chemcassette
®
(
)
Clean Optics (
Section 9.5
)
FAULT
(RY10)
On
Solid
5
Tape Motor Fail
Motor not Operating
Broken Chain
Wire Disconnected
Sensor Problem
Verify Motor Turns
Verify Capstan Rotates
Check Sensor/Magnet Position
Reconnect Motor Wire to CPU Board
Call Local Service Agent
FAULT
(RY10)
On
Solid
6
Change Internal Filters
Filter Timer Expired
Replace Internal Filters (
) and Reset Filter
MAINT
(RY8)
Off
Off
7
Change External Filters
Filter Timer Expired
Replace Sample Line Filters (
) and Reset
Filter Timer (
)
MAINT
(RY8)
Off
Off
8
Chemcassette
®
Low
Approximately 1-3 days of Chemcassette
®
remain
Replace Chemcassette
®
(
)
MAINT
(RY8)
Off
Off
9
Gate Open
Load Lever Open
Close Lever
FAULT
(RY10)
Off
Solid
Table B-1: CM4 Fault Listings (cont’d)
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