Chamberlain HS670 User Manual

GL BOARD FEATURES

There are three diagnostic LEDs. Two red LEDs (OL, CL) are
indicators for the open and close limits. The LEDs are illuminated
when the limit switch contacts are closed.

The third amber LED (DIA) is used to blink out diagnostic codes.
The number is the count of the number of times the LED is on in
an 8 second period. The LED is on for approximately 1/2 second
and repeats every second until the number is reached. There will
be a pause following each pulse cycle (1-6 pulses) to differentiate
between the different diagnostic codes.

Force Control

Max

Min

OFF

Normal operation

N/A

1

Single entrapment sensed

Control Input

2

Double entrapment

Hard Input*

3

Failed or no hall effect sensor

Removal of problem

4

Exceed maximum motor run time

Hard Input*

5

Limit fault

Control Input

6

Loss of communications between master and second during run mode

Removal of problem

On No Flash

Motor not learned

Completion of Motor Learn Routine

*Hard inputs include open override, close override and stop inputs.

T R O U B L E S H O O T I N G

There are 5 troubleshooting LEDs on relay drives K1 through K5. These
LEDs will be illuminated when the microcontroller relay drive is activated.

There are 9 troubleshooting LEDs.