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- FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100
ELECTRICAL SYSTEM
Error Code
Fault Description
Troubleshooting Action
Err29
Vacuum contactor coil overload
1. Check for correct wiring. 2. Check coil resistance if below 183 ohms
replace solenoid.
Err30
Vacuum contactor coil severe overload
1. Same as error code 29. 2. Check for a short circuit in wiring or
solenoid coil. Repair or replace.
Err31
Vacuum contactor coil circuit open (**)
1. Check for open in coil wiring. 2. If wiring checks OK, replace
solenoid. 3. Controller failure (replace).
Err32
Solution solenoid overload
1. Check for a wiring problem. 2. Check coil resistance (spec. is 95
Ohms + or – 10%). Replace contactor if lower than 85 Ohms.
Err33
Solution solenoid severe overload
Check for a short circuit in wiring or solenoid valve. Repair or replace.
Err34
Solution solenoid circuit open (**)
1. Check for disconnected solenoid wiring plug, open in wiring or
defective solenoid. Repair or replace. 2. Controller failure (replace).
Err35
External wiring fault
Identify the 4 wire pin connector (J1) on the control board (2 Red/Brn,
1 Blk, 1 Wht/Brn). Check the 2 Red/Brn wires for 36 volts input to the
connector. Repair.
Err36
No accessory output voltage
Identify the same 4 wire pin connector called out in Err35. Check the
Wht/Brn wire for 36 volts (output) and all component load connections
down line. Repair. 2. Possible controller failure.
Err40
Wheel drive auxiliary direction input fault
1. Check Aux driver Brn/Wht wire for continuity. If open repair wire. 2.
Check for a 36V auxiliary drive output
****
, if it reads 0-volts replace A1
Curtis controller, if it reads 36V replace A3 main controller.
Err41
Pre-sweep/dust control contactor coils
Check coil resistance (PN 56410087) spec 216 Ohms + or –
K4 & K5 overload or side broom motors
10% if lower than 183 ohms 15% replace contactor.
contactor coil K4 overload
Err42
Pre-sweep/dust control contactor coils
1. See error code 41. 2. Check for short circuit in wiring
K4 &K5 severe overload or side broom
and contactor coil.
motors contactor coil K4 severe overload
Err43
Pre-sweep contactor K5 coil circuit open/
1. Check for disconnected wiring, open in wiring, open in
output fault (**)
coil windings (infinity) and a defective S4 switch. Repair or replace. 2.
Next check coil voltage (36V) if 0 volts replace the controller A3.
Err46
Dust control or side broom motor(s)
1. Check for disconnected wiring, open in wiring and open
contactor coil K4 circuit open/output
in coil winding (infinity). Repair or replace. 2. Next check
fault (**)
for coil voltage (36V) if 0 volts replace the controller A3.
****
To check for output voltage the drive pedal must be in either forward or reverse to allow the Curtis controller (A1) to close the auxiliary
output circuit. See the scrub brush system functional overview for an explanation of the speed control’s auxiliary driver output circuit.
MAIN CONTROLLER ERROR CODES (CONTINUED)
revised 12/02
