555438
39
Zoom out
Zoom in
Previous page
1/44
Next page
38
Diagnostic Chart
Your garage door opener is programmed with self-diagnostic capabilities. The UP and DOWNarrows on the garage door opener flash the diagnosticcodes.
DIAGNOSTIC CODE
SYMPTOM SOLUTION
Up Arrow
Flash(es)
Down Arrow
Flash(es)
1 1 The garage door opener will not close and the light
bulbs flash.
Safety sensors are not installed, connected, or wires maybe cut. Inspectsensor wires for a
disconnected or cut wire.
1 2 The garage door opener will not close and the light
bulbs flash.
There is a short or reversed wire for the safety sensors. Inspectsafetysensor wire at all staple and
connection points, replace wire or correct as needed
1 3 The door control will notfunction. The wires for the door control are shorted or the door control isfaulty. Inspectsafetysensor wire at all
staple points and connection points and replace wire or correct as needed.
1 4 The garage door opener will not close and the light
bulbs flash.
Safety sensors are misaligned or were momentarily obstructed.Realign both sensors to ensure both
LEDs are steadyand not flickering.Make sure nothing ishanging or mounted on the door that would
interruptthe sensor’s path while closing.
1 5 Door moves6-8" stops or reverses. Manually open and close the door. Checkfor binding or obstructions,such as a broken spring or door
lock, correctas needed. Checkwiring connections attravel module and at the logic board. Replace
travel module if necessary.
No movement, only a single click. Manually open and close the door. Check for binding or obstructions, such as a broken spring or door
lock, correctas needed. Replace logic board if necessary.
Opener hums for 1-2 seconds no movement. Manuallyopen and close the door. Check for binding or obstructions,such as a broken spring or door
lock, correctas needed. Replace motor if necessary.
1 6 Door coastsafter it has come to a complete stop. Program travel to coasting position or have door balanced by a trained door systemstechnician.
2 1-5 No movement, or sound. Replace logicboard.
3 2 Unable to setthe travel or retain position. Check travel module for proper assembly,replace if necessary.
Troubleshooting
39


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Chamberlain HD420EV at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Chamberlain HD420EV in the language / languages: English as an attachment in your email.

The manual is 4,67 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info