Electrical Trouble Shooting.73 - Airstream Excella 1975 Owner's Manual

Electrical Trouble Shooting
Symptom Possible Cause
Remedy
No 12-volt power
(Lights, appliances do
not work)
1. Input line and/or battery not connected
2. Discharged trailer battery
3. Trailer battery on wrong polarity
1. Make necessary connections
2. Charge battery
3. See Item 6
Blown fuse
4. Overloaded circuit (over 50 amps)
5. Electrical short
6. Shorted battery
7. Battery terminals not properly corrected
to UNI VOLT + and - terminals
4. Turn off switches to reduce load. Replace
blown fuse in Univolt or next to Univolt.
5. Find blown fuse in Univolt and identify
circuit. From wiring diagrams check the
circuit for defective wiring, lamps or
motors.
6. Replace battery and fuse
7. Make proper connections; replace fuse
Dim lights or sluggish
fan motor
8, 25- or 50-cycle power (some foreign
countries)
9. Discharged battery (when operating with¬
out 120-volt line)
10. Battery is low on water
8. Use 60-cycle power
9. Charge battery
10. Add distilled water to battery
UNIVOLT will not
charge battery
11. Input line not connected
12. Battery not connected (or polarity re¬
versed)
13. Bad battery
14. Too many lights and appliances in use
15. Fuse blown
11. Connect input line
12. Connect battery to UNIVOLT
13. Replace battery
14. Reduce electrical load
15. Replace fuse