LiftMaster 3800 3800 Manual - Page 23
Care Of Your Opener, Having A Problem?, Troubleshooting - problems
UPC - 012381308002
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CARE OF YOUR OPENER MAINTENANCE SCHEDULE Once a Month • Manually operate door. If it is unbalanced or binding, call a trained door systems technician. • Check to be sure door opens & closes fully. Adjust limits and/or force if necessary (see Adjustment Steps 1 and 2). • Repeat the safety reverse test. Make any necessary adjustments (see Adjustment Step 3). Once a Year • Oil door rollers, bearings and hinges. The opener does not require additional lubrication. Do not grease the door tracks. THE REMOTE CONTROL BATTERY WARNING To prevent possible SERIOUS INJURY or DEATH: CAUTION • NEVER allow small children near batteries. • If battery is swallowed, immediately notify doctor. The lithium battery should produce power for up to 5 years. To replace battery, use the visor clip or screwdriver blade to pry open the case as shown. Insert battery positive side up. Dispose of old battery properly. Battery positive side up (+) NOTICE: To comply with FCC and or Industry Canada (IC) rules, adjustment or modifications of this receiver and/or remote control are prohibited, except for changing the code setting or replacing the battery. THERE ARE NO OTHER USER SERVICEABLE PARTS. Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. HAVING A PROBLEM? (TROUBLESHOOTING) 1. The opener doesn't operate from either the Control Console or the remote control: • Does the opener have electric power? Plug a lamp into the outlet. If it doesn't light, check the fuse box or the circuit breaker. (Some outlets are controlled by a wall switch.) • Have you disabled all door locks? Review installation instruction warnings on page 7. • Is there a build-up of ice or snow under the door? The door may be frozen to the ground. Remove any restriction. • The garage door spring may be broken. Have it replaced. 2. Opener operates from the remote, but not from the Control Console: • Is the control console lit? If not, reverse the wires. If the opener runs, check for a faulty wire connection at the control console, a short under the staples, or a broken wire. • Are the wiring connections correct? Review Installation Step 5, page 10. 3. The door operates from the Control Console, but not from the remote control: • Is the door push bar flashing? If so, Lock mode is engaged. Make sure it is off by pressing the Lock button. • Program the opener to match the remote control code. (Refer to instructions on the motor unit panel.) Repeat with all Remote. 4. The remote control has short range: • Change the location of the remote control in your car. • Check to be sure the antenna on the side or back panel of motor unit extends fully downward. • Some installations may have shorter range due to a metal door, foil backed insulation, or metal garage siding. 23