Question 1

What does Keller fault code A-IN-02 mean?

Accepted Answer

A-IN-02 (Interlock): Mast Won't Rotate / Drill Lock Fix: LOGIC: Analog Input 2 (Torque Sensor) Out of Range.

ACTION: Check the 0-10V signal from the torque transducer on the rotary head.

Question 2

What does Keller fault code BTCH-ABRT mean?

Accepted Answer

BTCH-ABRT (Batching): Batching Plant Stops Mid-Mix Fix: LOGIC: Batch Time-Out (Water/Cement sync error).

ACTION: Check the "Water Meter" pulse output. Verify the pump is actually moving fluid.

Question 3

What does Keller fault code CAN-TIMEOUT mean?

Accepted Answer

CAN-TIMEOUT (Network): Hydraulic Functions Locked Fix: LOGIC: Loss of communication with the Valve Driver Module (VDM).

ACTION: Check the 4-pin CAN connector at the base of the mast.

Question 4

What does Keller fault code COMM-ETH mean?

Accepted Answer

COMM-ETH (Network): PC Won't Talk to FMS Fix: LOGIC: Ethernet Link Down.

ACTION: Inspect the M12-to-RJ45 industrial cable for internal breaks or bent pins.

Question 5

What does Keller fault code ERR 301 mean?

Accepted Answer

ERR 301 (Depth Control): Incorrect Depth Reading Fix: LOGIC: Rotary Encoder Signal Mismatch.

ACTION: Check the encoder wheel for slipping on the wire rope or build-up of grout/mud.

Question 6

What does Keller fault code EXT-INT mean?

Accepted Answer

EXT-INT (Safety): All Functions "Dead" Fix: LOGIC: External Interlock Open (Remote E-Stop).

ACTION: Check the communication cable to the "Grout Trailer" or "Batch Plant."

Question 7

What does Keller fault code FLOW-MIN mean?

Accepted Answer

FLOW-MIN (Grouting): Grout Pump Shutdown Fix: LOGIC: Flow Meter Signal Below Minimum.

ACTION: Inspect the magnetic flow meter for "scaling" (dried grout) inside the tube.

Question 8

What does Keller fault code H-TEMP-HI mean?

Accepted Answer

H-TEMP-HI (Hydraulic): Rig Powers Down to Idle Fix: LOGIC: Hydraulic Oil Temp Exceeds 85°C.

ACTION: Clean the hydraulic coolers with compressed air. Check the fan motor for proper RPM.

Question 9

What does Keller fault code HYD-FIL mean?

Accepted Answer

HYD-FIL (Hydraulic): High Back-Pressure Alarm Fix: LOGIC: Return Filter Restricted.

ACTION: Replace the 10-micron return filters. Check for metallic debris in the "Filter Bowl."

Question 10

What does Keller fault code HYD-PRES-01 mean?

Accepted Answer

HYD-PRES-01 (Hydraulic): Slow Winch / No Torque Fix: LOGIC: Main Pump Pressure Signal Low.

ACTION: Check the "EP" (Electronic Proportional) solenoid on the pump regulator.

Keller Fault Codes

Code	System	Symptom	Full fix
A-IN-02	Interlock	Mast Won't Rotate / Drill Lock	View fix
BTCH-ABRT	Batching	Batching Plant Stops Mid-Mix	View fix
CAN-TIMEOUT	Network	Hydraulic Functions Locked	View fix
COMM-ETH	Network	PC Won't Talk to FMS	View fix
ERR 301	Depth Control	Incorrect Depth Reading	View fix
EXT-INT	Safety	All Functions "Dead"	View fix
FLOW-MIN	Grouting	Grout Pump Shutdown	View fix
H-TEMP-HI	Hydraulic	Rig Powers Down to Idle	View fix
HYD-FIL	Hydraulic	High Back-Pressure Alarm	View fix
HYD-PRES-01	Hydraulic	Slow Winch / No Torque	View fix
TRQ-LIM	Rotary Drive	Drill Head Stalls / No Power	View fix