FIRE MONITOR ZONE OPEN CIRCUIT TROUBLE: 4010ES Trouble Code

What This Code Means

A trouble message used to indicate that the FACP is impaired due to a break in the electrical path of a circuit.

Common Causes

1Smoke detector heads are not properly mounted and seated
2Smoke detector power is not present
3Separately powered 4-wire devices are used without power
4Field wiring for notification appliances or initiating devices is broken
5End-of-Line devices are not in place

Resolution Steps

Make sure the smoke detector heads are properly mounted and seated. Verify that smoke detector power is present, particularly for separately powered 4-wire devices. Check all system wiring to verify that each circuit is free of grounds and extraneous voltages. Use a multimeter to check each circuit for extraneous voltage and resistance measurements. Restore or replace the defective device (switch, wire, notification appliance, etc.) in accordance with the device’s instructions.