Zetor PRIMO HT 20 NC, Operator'S Manual, Page: 125 / 134

Electrical system faults
FAULT PROBABLE CAUSE SOLUTION
Electrical
System
The battery is
not charging

Blown fuse

Check the power lines and replace the
defective fuse

Defective power
line

Check for loose or missing cable, short
circuit, poor grounding, and repair as
needed

Defective
alternator

Have it repaired by an authorized service

Loose or damaged
alternator belt

Adjust the belt preload or replace the
cracked belt

Battery
malfunction

Check that the terminals are not loose or
corroded, or that there is a sufficient
amount of electrolyte and take the
necessary measures
The lights are
not bright
enough

Low battery
charge level

Recharge the battery

Poor contact on
power lines

Check the grounding, clean and tighten
clamps
The light does
not come on

Burnt out light bulb

Replace the bulb

Blown fuse

Check the power lines and replace the
fuse

Bad contact

Check the grounding and clean the
clamps
The turn signal
light does not
flash

Burnt out light bulb

Replace the bulb

Defective light
interrupter

Replace

Bad contact

Check the grounding and clean the
clamps
The work light
does not come
on

Burnt out light bulb

Replace the bulb

Bad contact

Check the grounding and clean the
clamps
TROUBLESHOOTING
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