Blue Sea Systems P12 Alert Screens and Diagnostics

Speciﬁcations are subject to change. See bluesea.com/P12 for current information. 21

Alert Screens and Diagnostics (continued)

DC Output Voltage Too High

If at any point the charger detects a DC output voltage greater than 17.8V DC for ﬁve seconds, then the alert

screen on the right will appear. In this state the charger will cease to charge any batteries in order to prevent

damage. Shut off AC power for two minutes, and then restart. If the alert screen persists, shut off AC power and

contact Blue Sea Systems for further assistance.

DC Fuse

The P12 Battery Charger has two internal DC fuses that are not accessible by the user. If the DC Fuse Alert Screen

appears, disconnect AC power and all battery connections. The battery charger will require servicing by Blue Sea

Systems. No attempts should be made to replace the fuses by the user. Contact Blue Sea Systems for further

instructions regarding DC fuse replacement.

CAUTION

Any attempt to replace the DC fuses will void warranty.

Internal Fuse Failure.

Contact Blue Sea Systems

360.738.8230

AC Input Voltage Too Low

The minimum input voltage for the P12 Battery Charger is 90V AC. However, due to common voltage sags caused

by spikes in power, the internal hardware of the P12 Battery Charger can continue to charge for brief periods

below 90V AC. If the AC input voltage drops below 75V AC, the alert screen on the right will appear. While in this

state the charger will cease to charge any batteries. Shut off power at the AC source for two minutes, and then

restart. If the alert screen persists, attempt to use a different AC power source, or contact an electrician to

diagnose the problem.

Hardware Failure

There are many complex internal electrical components on the P12 Battery Charger. If any of the vital hardware

components fail the Hardware Failure Alert Screen will appear. Shut off AC power for two minutes, and then

attempt to restart. If there is no longer a Hardware Failure Alert Screen, proceed to use the charger normally. If the

Hardware Failure Alert Screen persists, disconnect AC power and all battery connections, and contact Blue Sea

Systems for further assistance.

Hardware Fault

Turn Off AC For 2 Minutes

Then Turn Power On

AC Input Voltage Too High

The maximum input voltage for the P12 Battery Charger is 265V AC. If the input voltage is above 265V AC the

alert screen on the right will appear. In this state the charger will cease to charge any batteries. Shut off power at

the AC source for two minutes and then restart. If the alert screen persists, attempt to use a different AC power

source, or contact an electrician to diagnose the problem.

AC Input Voltage too Low

Check for Proper AC Source

AC Input Voltage Too High

Check for Proper AC Source

DC Output Voltage Too High

Charger is off to prevent damage

Disconnect AC for 2 mins. then restart

EQ stopped-Max Current Limit

Make sure battery is charged

and all loads removed!

Equalization Overload

If at any point during equalization the total output current of the battery charger is greater than the deﬁned

Maximum Equalization Current the Equalization Overload Alert Screen will appear. To correct, conﬁrm batteries

are fully charged, and all loads are turned off prior to equalization. If mandatory 24-hour loads are present you may

adjust the Maximum Equalization Current accordingly. Once corrected, the equalization process must be restarted.

WARNING

Increasing the Maximum Equalization Current beyond your battery manufacturers recommendations is potentially

dangerous. Consult your battery manufacturer for proper equalization currents.

P12

7521 AND 7522 BATTERY CHARGERS