Chamberlain ESTATE SERIES SW 2000-X3 - Manual (Page 31)

Rev F Doc 01-20099 25 of 44
PART 4
TROUBLESHOOTING AND MAINTENANCE
A. TROUBLESHOOTING
This section is designed to help you troubleshoot your unit(s) with a minimum. Below are
some hints to help:
Test the Operator
Quick Reference List of Faults and Methods to Resolve
Quick Reference List of Faults and Causes
Testing Control Board inputs: To test an input, connect the input terminal to the
COMMON terminal on the Control Board and verify that its LED turns on
momentarily. Normally, the Close limit switch and Maglock LED's are on if the gate
is fully closed, and Open limit switch is on if the gate is fully open. The Manual
STOP LED is always on.
Low input AC voltage: The voltage across connector J1 pins 1 (red wire) and 3
(white wire) on the Control Board must measure 100VAC to 130VAC.
CAUTION HIGH VOLTAGE. Measure with care.
Fault Causes: Refer to the end of trouble shooting section.
1. OPERATOR IS DEAD
When the unit power switch is cycled, the 7-segment display does not spell
out "HELLO" sequentially.
1. The main circuit breaker or unit power switch is off.
2. The input power connector is not connected securely to the Control Board.
3. Low input AC voltage.
4. Bad Control Board.
2. OPERATOR DOES NOT RUN
When the unit power switch is turned on, the 7-segment display spells out
"HELLO" sequentially.
1. An input is continuously activated (stuck).
2. Both limit switches are stuck closed.
3. Manual Stop is disconnected from its common.
4. Stalled motor.
3. MOTOR DOES NOT RUN
Motor is dead:
1. The resettable motor thermal overload switch has popped.
2. The interconnecting cable between the motor and the control board is
disconnected.
3. Bad control board or motor.
Motor is stalled:
1. Frozen motor, gearbox or gate.
2. V-belt is too tight.