ACCESSORY POWER: SK-5207 Trouble Code | Fire Alarm Resource Center
ACCESSORY POWER
trouble
Silent Knight SK-5207
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What This Code Means
Indicates a trouble condition with the accessory power at terminal 26 or a mismatch between the power supply and panel voltage selections.
Common Causes
1Power supply and panel voltage selections are not the same
2Accessory power voltage is outside the normal range (typically 26-30V)
3Short circuit or overload on terminal 26
Resolution Steps
Check programming step 2 to ensure power supply and panel voltage selections match. Measure the voltage at terminal 26. Use Accu-Zone Troubleshooting (Mode 25) to locate and correct the condition.