Sargent EC400 Series, System Instructions

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EC400 / EC450 series Power Control System
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Issue 1 Page 8 of 13 12
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June 2011
Battery
Voltage
cut off
Action after cut off Notes
Vehicle 10.9v
Battery selection is
changed from Vehicle
battery to Leisure
battery. If the leisure
battery is below 9v then
a further warning will
occur (see below).
This cut off level is designed to protect the vehicle
battery from over discharge. The 10.9v level
ensures there is sufficient power in the battery to run
the vehicle electronics and start the vehicle. This
cut off only applies to power drawn from the battery
by the leisure equipment; it will not protect the
battery if you leave vehicle circuits switched on,
such as the road lights.
Leisure 9v Power is turned off
This is an emergency cut off level to protect the
battery from severe damage. You should not rely on
this cut off level during normal operation, but
manage your power consumption to a discharge
level of 10v.
This cut off only applies to power drawn from the
battery by the leisure equipment that is controlled by
the control panel power switch; it will not protect the
battery from discharge by permanently connected
equipment.
3.5 12 Volt DC Fuses
WARNING
When replacing fuses always replace a fuse with the correct value. NEVER replace with a higher value /
rating as this could damage the wiring harness. If a replacement fuse ‘blows’ do not keep replacing the
fuse as you could damage the wiring harness. Please investigate the fault and contact your dealer.
The following table shows the fuse allocation for the 15 fuses fitted to the PSU. Please note that fuses
are dependant on PSU versions, so not all fuses may be present.
Fuse Rating Fuse Colour Description
1 20 Amps Yellow * Motorhome Fridge 12V
2 15 Amps Blue * Motorhome Towing
3 7.5 Amps Brown * Motorhome Marker Lights
4 15 Amps Blue * Motorhome Fridge D+
5 10 Amps Red Extractor Fans / Heating Systems
6 10 Amps Red 12V Sockets / TV Amp / ***Radio
7 10 Amps Red Front Internal Lights
8 10 Amps Red Water Pumps / Toilet
9 15 Amps Blue * Electric Step
10 10 Amps Red * Motorhome Tank Heaters
11 10 Amps Red ** Auxiliary Supplies
12 5 Amps Tan Electronics / Fridge / Alarm
13 5 Amps Tan Oven Ignition / * Water Heater
14 10 Amps Red Rear Internal Lights
15 25 Amps Clear Charger (fitted internally to PSU)
* Where Applicable / When
Fitted ** Motorhome Awning / Entry lights / Map
lights / Enroute Heating / Compressor
Fridge / Travel Skts / Bathroom lights *** Caravan Radio Supply /
Motorhome Bathroom lights