Chamberlain GCU User Manual download pdf

Carton Inventory

Overview

The Gate Control Unit (GCU) can be paired with the

Gate Access Panel (GAPLM) to wirelessly control a

gate operator.

The GCU is compatible with various Liftmaster

Wireless Products.

Step 2

Install 4 AA Alkaline batteries

(not provided). (Lithium

batteries recommended for

colder environments.)

Model GCU

Gate Control Unit

Step 1

Remove cover.

Assembly

Gate Control Unit (GCU)

Within 20 seconds enter Master PIN Number on

GAPLM:

Followed by GCU Identity as determined in Step 3:

The GCU LED will blink 3 times indicating

programming is successful. If error tone is heard or

GCU LED emits 3 double blinks, then programming

has failed.

Repeat for additional GCUs.

“BEEP” “BEEP”

Step 3

NOTE: This step applies only if more than one GCU

is being used.

Up to four GCUs can be used. Each GCU will need a

different Identity. Set the Identity of the GCU by

changing the Dipswitches as shown in the chart

below.

GCU ID Switch #1 Switch #2

1 OFF OFF

2 ON OFF

3 OFF ON

4 ON ON

Dipswitches

Learn

Button

Step 4

Press the Learn button on the

GCU for one second. The LED

will light for 20 seconds.

LED

Programming to GAPLM

1 2 3 4

Summary of Contents

Page 1 - Programming to GAPLM

Carton InventoryOverviewThe Gate Control Unit (GCU) can be paired with the Gate Access Panel (GAPLM) to wirelessly control a gate operator.The GCU is

Page 2 - Operation

Replace GCU cover and mount near gate operator control box.Remove bottom panel of GCU. Connect Terminal 10 on GCU to Common on gate operator (shown b

Page 3 - Troubleshooting

3Gate Operator “ON” TimeTroubleshootingThere is an error tone when the GCU is activated.The GAPLM or DAILM is not communicating with the GCU. The GCU

Page 4 - 1-800-528-2806

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Chamberlain GCU User Manual

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Summary of Contents

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