These error code explanations can help you diagnose a problem with your Chamberlain garage door opener model WD832KEV or HD620EV. For repair how-to help, visit the PartsDirect repair help section, which includes repair help for garage door openers, refrigerators, other major appliances, lawn and garden equipment, water softeners/heaters and more. Search for your model number to find a complete list of replacements parts available for your garage door opener.
Error Code
Condition
DIY advice
1 Up flash, 1 Down flash
Safety sensors aren’t installed or connected, or sensor wires are broken
Check/Repair
Inspect the safety sensor wire connections on the motor unit and reconnect any loose wires. Examine the sensor wires for damage or breaks. Repair or replace damaged wires. Replace the safety sensors if defective.
How-to help
How to repair broken or damaged wires video
How to replace a garage door opener safety sensor
Possible parts
Safety sensor wire, safety sensor kit
1 Up flash, 2 Down flashes
Safety sensor wires are shorted or reversed
Check/Repair
Inspect safety sensor wires for incorrect connection to the control panel. Connect the wires properly. Check the safety sensor wiring for damage. Repair or replace damaged wiring.
Possible parts
Safety sensor wire
1 Up flash, 3 Down flashes
Wall control defective or wall control wires are broken
Check/Repair
Examine the wall control wires. Reconnect loose wiring connections. Repair or replace damaged wires. Replace the wall control if defective.
Possible parts
Wall control wire, wall control
1 Up flash, 4 Down flashes
Misaligned or obstructed safety sensors
Check/Repair
Realign the safety sensors so the LED lights on both sensors turn on. Remove any obstruction between the sensors.
Possible parts
1 Up flash, 5 Down flashes
Garage door binding, defective logic board or bad travel module
Check/Repair
Unlock the latch on the garage door if it's engaged. Check for bent door tracks or obstructions in the tracks. Pull the emergency door release to disconnect the garage door from the opener trolley. Open and close the door manually, checking for smooth door operation. Have a garage door repair technician fix the door and tracks if the door binds up on the tracks. Run the garage door opener to move the trolley back and forth along the garage door opener rail to check for binding. Replace the rail or trolley if damaged. If the garage door travels smoothly and you find no rail or trolley problems, unplug the garage door opener and check the wire connections between the logic board and the travel module. Reconnect any loose wires and repair any broken wires. If the door only moves 6 to 8 inches and stops, replace the travel module. Replace the logic board if it doesn't send current to the motor when you activate the opener.
Possible parts
Garage door components, garage door opener rail, trolley, travel module, logic board
2 Up flashes, 1 Down flash
Defective logic board
Check/Repair
Unplug the garage door opener for 1 minute and then plug it back in to restore power. If the code resumes after restoring power, unplug the garage door opener and replace the logic board.
Possible parts
Logic board
2 Up flashes, 2 Down flashes
Defective logic board
Check/Repair
Unplug the garage door opener for 1 minute and then plug it back in to restore power. If the code resumes after restoring power, unplug the garage door opener and replace the logic board.
Possible parts
Logic board
2 Up flashes, 3 Down flashes
Defective logic board
Check/Repair
Unplug the garage door opener for 1 minute and then plug it back in to restore power. If the code resumes after restoring power, unplug the garage door opener and replace the logic board.
Possible parts
Logic board
2 Up flashes, 4 Down flashes
Defective logic board
Check/Repair
Unplug the garage door opener for 1 minute and then plug it back in to restore power. If the code resumes after restoring power, unplug the garage door opener and replace the logic board.
Possible parts
Logic board
2 Up flashes, 5 Down flashes
Defective logic board
Check/Repair
Unplug the garage door opener for 1 minute and then plug it back in to restore power. If the code resumes after restoring power, unplug the garage door opener and replace the logic board.
Possible parts
Logic board
3 Up flashes, 2 Down flashes
Can't detect door travel
Check/Repair
Unplug the garage door opener and check the wire connections between the logic board and the travel module. Reconnect any loose wires and repair any broken wires. If wiring connections are okay, replace the travel module.
Possible parts
Travel module
4 Up flashes, 1 Down flash
Garage door binding or travel limits not set properly
Check/Repair
Check for bent door tracks or obstructions in the tracks. Pull the emergency door release to disconnect the garage door from the opener trolley. Open and close the door manually, checking for smooth door operation. Have a garage door repair technician fix the door and tracks if the door gets stuck on the tracks. If the door is okay, program the up travel limit to stop the opener once the door fully opens. Program the down travel limit to stop the door when it touches the floor.
Possible parts
Garage door components
4 Up flashes, 2 Down flashes
Garage door binding or travel limits not set properly
Check/Repair
Check for bent door tracks or obstructions in the tracks. Pull the emergency door release to disconnect the garage door from the opener trolley. Open and close the door manually, checking for smooth door operation. Have a garage door repair technician fix the door and tracks if the door gets stuck on the tracks. If the door is okay, program the up travel limit to stop the opener once the door fully opens. Program the down travel limit to stop the door when it touches the floor.
Possible parts
Garage door components
4 Up flashes, 3 Down flashes
Garage door binding or travel limits not set properly
Check/Repair
Check for bent door tracks or obstructions in the tracks. Pull the emergency door release to disconnect the garage door from the opener trolley. Open and close the door manually, checking for smooth door operation. Have a garage door repair technician fix the door and tracks if the door gets stuck on the tracks. If the door is okay, program the up travel limit to stop the opener once the door fully opens. Program the down travel limit to stop the door when it touches the floor.
Possible parts
Garage door components
4 Up flashes, 4 Down flashes
Garage door binding or travel limits not set properly
Check/Repair
Check for bent door tracks or obstructions in the tracks. Pull the emergency door release to disconnect the garage door from the opener trolley. Open and close the door manually, checking for smooth door operation. Have a garage door repair technician fix the door and tracks if the door gets stuck on the tracks. If the door is okay, program the up travel limit to stop the opener once the door fully opens. Program the down travel limit to stop the door when it touches the floor.
Possible parts
Garage door components
4 Up flashes, 5 Down flashes
Communication error between the travel module and logic board
Check/Repair
Unplug the garage door opener and check the wiring connections between the logic board and the travel module. Reconnect any loose wires or replace the wires if broken. If the wires are okay, replace the travel module.
Possible parts
Travel module, wire
4 Up flashes, 6 Down flashes
Safety sensors temporarily obstructed or misaligned
Check/Repair
Check safety sensor alignment and adjust if necessary. Check for excessive garage door rail vibration. Tighten the rails if loose. Sunlight can interfere with the infrared safety sensor beam. Install sun shields over the safety sensors if you suspect sunlight interference.
How-to help
Installing a sensor sun shield on your garage door opener video
Possible parts
Sun shield
