LiftMaster CSW24V CSW24V Installation Manual - Page 43

TROUBLESHOOTING FAULT Accessories connected to Accessory power not working correctly, turning off, or resetting. Quick Close not working correctly. Anti-Tailgating not working correctly. AUX Relay not working correctly. POSSIBLE CAUSES a) Accessory power protector active b) Defective control board a) Quick Close setting incorrect b) CLOSE EYES/Interrupt loop detector or loop wire defective c) Defective Expansion board a) Anti-Tail setting incorrect b) CLOSE EYES/Interrupt loop detector or loop wire defective c) Defective Expansion board a) AUX Relay setting incorrect b) AUX Relay wiring incorrect c) Defective Expansion board TROUBLESHOOTING CHART CORRECTIONS a) Disconnect all accessory powered devices and measure accessory power voltage (should be 23 - 30 Vdc). If voltage is correct, connect accessories one at a time, measuring accessory voltage after every new connection. b) Replace defective control board a) Check that Quick Close setting is ON b) Check operation of CLOSE EYES/Interrupt Loop detector c) Replace defective Expansion board a) Check that Anti-Tail setting is ON b) Check operation of CLOSE EYES/Interrupt Loop detector c) Replace defective Expansion board a) Check AUX Relay switches settings b) Check that wiring is connected to either N.O. and COM or to N.C. and COM. c) Set AUX Relay to another setting and test. Replace defective expansion board. 41