Nilfisk-Advance Hydro-Retriever 2800 BR700, Service Manual

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FORM NO. 56043055 / HR 2800, HR 2800C / BR 700, BR 700C - 41
ELECTRICAL SYSTEM
STATUS LED FAULT CODES (TABLE 1)
LED STATUS LIGHT EXPLANATION POSSIBLE CAUSE
CODE DISPLAY
Output fault 1. Short in motor or in motor wiring.
1,1 O O 2. Controller failure.
Overcurrent fault 1. Short in motor or in motor wiring.
2. Controller failure.
EEPROM fault 1. EEPROM failure or fault.
Main contactor fault 1. Main contactor welded.
2. Main contactor driver fault.
3. Main contactor coil fault.
1,2 O OO Precharge fault 1. Internal controller fault.
2. Low battery voltage.
Motor voltage fault 1. Motor voltage does not correspond to throttle
request.
2. M1 or M2 output shorted to B- or B+.
3. Internal motor short.
4. Controller failure.
2,2 OO OO HPD fault 1. Improper sequence of KSI, power enable, and
throttle inputs.
2. Misadjusted throttle pot.
2,3 OO OOO HPD fault present for > 5 sec. 1. Misadjusted throttle.
2. Broken throttle pot.
3. Broken throttle mechanism.
2,4 OO OOOO Speed limit pot fault 1. Speed limit pot wiper wire broken.
2. Broken speed limit pot.
3,3 OOO OOO Throttle fault 1. Throttle input wire open.
2. Throttle input wire shorted to B- or B+.
3. Throttle pot defective.
4. Wrong throttle type selected.
4,1 OOOO O Low battery voltage 1. Battery voltage <16 volts (24V models).
2. Corroded or loose battery terminal.
3. Loose controller terminal.
4,2 OOOO OO Overvoltage 1. Battery voltage >36 volts (24V models).
2. Vehicle operating with charger attached.
4,3 OOOO OOO Over / Under-temp. cutback 1. Temperature >95°C (203°F) or<-25°C (-13°F).
2. Excessive load on vehicle.
3. Improper mounting of controller.
4. Operation in extreme environments.
Note: A KSI (key switch input) type HPD (high pedal disable) is an operational fault caused by the operator activating the Fwd/Rev drive
pedal before turning on the main key switch. This can be cleared by removing the operators foot from the pedal and cycling the key switch
ON and OFF.
revised 2/05