L1trouble
Silent Knight SK-5207: L1
Silent Knight SK-5207·1 view·0 field notes
What This Code Means
A trouble condition or fault exists on phone line 1.
Common Causes
- 1Phone line voltage drops below 3 VDC
- 2Telephone service is interrupted for longer than 45 seconds
- 3Physical fault in the phone line
Resolution Steps
Monitor the DC voltage present on the lines to ensure it does not drop below 3 VDC for longer than 40 seconds. Verify that the telephone service has not been interrupted. Ensure the phone lines are programmed properly according to the manual's programming steps.