Fullwat FUM-12-CBP Series User Manual Download Page 6

I. Trouble Shooting

PROBLEM

INDICATIONS

POSSIBLE CAUSES

SUGGESTED SOLUTION

Charger does not
work 

Indicator lights not
turn on 

No AC power

AC input socket fuse blown 

Check AC connections are correct 

Replace with correct AC fuse by qualified
electrician

No DC output 

Charger - On LED is
not on, Float and
Fault LEDs are  on.

Output short circuit 

Over temperature protection triggered 

Severe over loading charger

Reverse polarity connection

Check dc connections between charger
and battery

Check air intake vent at bottom of charger
is blocked or not. Check charger ambient
ventilation .
Check battery AH capacity within
recommended range
Check for correct polarity, replace car
blade fuse (7)

Battery does not get
full charge

All indicator LED
work normally and
sequentially 

Bad battery connection 

Battery type select switch in wrong setting

Battery capacity too large

Ambient temperature too low 

Battery has damaged cell or battery is too
old 

Check for loose contact, right cable size,
cable integrity
Recheck battery type and change to
correct battery selection
Make sure charger rating matches battery
capacity see table (B2)
Move battery to a room temperature
location, or get an optional temperature
sensor 
Replace battery

Long charging
time , float light
does not come on
even after 20 hours
charging time.

Absorption light
remains on all the
time 

Wrong battery type selection eg. charge
gel battery with Calcium-Calcium OR Wet
type selection 

Total battery capacity is too high for dual
charging 

Battery temperature too high 

Battery is defective

A load is connected to battery and charger
is not in power supply mode.

Check charged battery label and change
battery type selection to correct setting.

Check battery capacity or charge battery
separately

Use temperature sensor (optional
accessory)

Replace  battery 

Change charger Selector Switch (2) to
Power Supply Mode. 

Bulk LED is on all
the time 

Bulk light remains
on all the time when
Charger is in Power
Supply Mode, LED
(2) is on red.

The connected load is too large, using
most of the current from the charger.

Reduce the load to about 50% of the
charger's rating current Or take away the
load and set Charger to Battery Charger
Mode to fully charge the battery before
return back to the power supply setting
and load connection.

Bulk light remains
on all the time when
Charger is in Battery
Charger mode LED
(2) is on green.

Wrong battery type selection

Battery is excessively depleted and the
soft charging is triggered  

Battery temperature too high

Check charged battery label and change
battery type selection to correct setting.
Recharge the battery after a day, if bulk
light remains after several hours, the
battery is most likely damaged and cannot
accept charge. Replace battery.
Use optional accessory temperature
sensor

Summary of Contents for FUM-12-CBP Series

Page 1: ...er serviceable parts inside Do not charge the battery on boats Remove the battery and charge on shore Never attempt to charge a frozen battery Never attempt to charge a damaged battery Wear protective...

Page 2: ...harger Power Supply Selection Slide Switch to set Charger to 3 Stage Charger or Power Supply Mode See Section G 3 Battery Type Selection Slide Switch to set charger for AGM Gel Wet and Calcium Calcium...

Page 3: ...ttery condition fill up cells for wet battery clean battery poles Secure the battery charger in a well ventilated place make sure the mounting surface is flat and without soft covering material or loo...

Page 4: ...because only one setting of charging profile for both Two batteries are charged simultaneously and the battery with the lowest level gets most share of the current in the Bulk charge stage until it i...

Page 5: ...s used to optimal charging over wide ambient temperature range Fix the temperature sensor optional accessory in a position on the battery which is not affected by other cooling or heating source Plug...

Page 6: ...ours charging time Absorption light remains on all the time Wrong battery type selection eg charge gel battery with Calcium Calcium OR Wet type selection Total battery capacity is too high for dual ch...

Page 7: ...d Output Current or 50 Rated Output Current Soft Charge Protection Type Constant Current Limiting recovers Automatically after Fault Condition is Removed Short Circuit Recovers Automatically After Fau...

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