Steca UGP 5.9, Руководство по техническому устранению неисправностей

Страница: 2 / 6

Failure analysis
PF166
Pfad \ Datei: I:\Projekte\SOLAR\PV-Entw\FREEZER\_E5970_KS-solar-LHG\14_Service\Failure analysis.doc Seite 1 von 5
Speicherdatum: Bearbeiter: Gutzeit
The PF166 is running with extra low voltage. There is no risk during maintenance and testing
by high voltage. Nevertheless use isolated tools and a fuse in the battery cable to protect a
short circuit of the battery. Please prevent as well ESD.
1. Check installation
Please check if the display shows any number or if the Minus-LED is
blinking
[40] . If no display appears check battery connection:
•
polarity
•
broken fuse
•
damaged cable or connector
2. Battery voltage
Please check if the battery voltage is higher than the cut-off voltage of the compressor. If
the battery voltage is below 10,4V or in between 17,0V and 22,8V the inverter box
[235] is
disconnecting the compressor to protect the battery against deep discharge. So voltage had
to be between 10,4V and 17,0V in a 12V system or between 22,8V and 30,5V in a 24V
system.
The display
[90] is already operating if the compressor [230] is disconnected by the inverter
box [235] . If the battery voltage is lower than the cut-of level, the LED connected to the
inverter box (between "+" and "D", see topic 5) is flashing one time.
After recharging the battery the compressor
[230]
will start automatically after reaching the
cut-in voltage.
Cut-off Cut-in
12V battery 10,4V 11,7V
24V battery 22,8V 24,2
°C °C
°F °F
electronic
thermostat with
user interface
GTC
inverterbox with
speed control
101N0300