Powertech MB-3689, MB-3684 User Manual

11

10. Troubleshooting

Problem Buzzer Possible Cause Solution

No Charging

(no display)

No beep

Low input voltage

Input fuse burned

Check voltage & current

Please change by the

experienced engineer

Wrong wire connection Check connection and wires

No Charging

(with display)

No charging after

prolonged use

Long beep Input voltage deviant Check voltage & current

1 short beep

1 short beep

2 short beeps

3 short beeps

Battery is not connected

Check if poor wiring

Check if poor battery condition

or wrong voltage

Low battery voltage

High battery voltage Check if wrong voltage

Over temperature

Improve ventilation

Reduce ambient temperature

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Made in Taiwan

12V DC-DC Battery Charger

User Manual

MB-3684 (20A)
MB-3689 (30A)

12V DC-DC Battery Charger MB-3684(20A),MB-3689(30A)

Thank you for purchasing this product.

Properly used, this product will provide years of reliable

service. Please read this manual carefully, understand

and comply with all instructions before use.

Table of Contents

1. Overview.......................................................Page.2

3. Recommendation of Battery Capacity..........Page. 4

4. Safety Instructions and Warnings.................Page. 5

5. Maintenance.................................................Page. 6

6. Mounting The Charger..................................Page. 7

7. Wire Connection...........................................Page. 7~8

8. Dis

play during operation...............................Page. 8-10

9. The Error Code.............................................Page. 10

10. Troubleshooting .........................................Page. 11

1

2. Specification..................................................Page.3

A U X B A T T 1 2 . 5 V

V I : E R R OR

The Display Code

De scr iption How buzzer operate

Input voltage error Continuous Alarm

B A T T E R Y

W

R ONG

Low Battery Voltage

a short beep

B A T T E R Y

W

R ONG

High Battery Voltage

tw o short be eps

B A T T E R YON

Battery disconnection

a sh ort b eep

MP .T E RORRE

three short bee ps

* Battery Voltage Display Function

4-2-1. It gets into Sleep Mode when the Ignition Switch off

but battery is connected

4-2-2. Display shows Battery

Voltage if to press the Function

Switch in Sleep Mode.

4-2-3. It moves back to Sleep Mode again after 10 seconds.

4-2-4. Press the Function Switch in Sleep Mode and battery

voltage is less than 10.5V, buzzer sounds for 10

seconds, then moves back to Sleep Mode again

9. The Error Code

( See table description below for more information)

10

Temp deviant