Question 1

What does Keller FMS fault code 0x1E8 mean?

Accepted Answer

0x1E8 (System Power): Unit Won't Boot / Screen Frozen Fix: LOGIC: Internal Voltage/Current Check Failure.

ACTION: De-energize the unit for at least 5 minutes. Check the 24V supply line for ripples.

Question 2

What does Keller FMS fault code COMM-01 mean?

Accepted Answer

COMM-01 (Interface): No Engine Data on FMS Screen Fix: LOGIC: J1939 Gateway Timeout.

ACTION: Verify the FMS is receiving the "Heartbeat" signal from the engine ECM. Check Pin C/D on the diagnostic port.

Question 3

What does Keller FMS fault code ERR 249 mean?

Accepted Answer

ERR 249 (Network): Data Logging Stopped / No Display Fix: LOGIC: ISOBUS Defective or Overloaded.

ACTION: Check the CAN-bus termination resistance. Inspect the main harness to the "Master Job Computer."

Question 4

What does Keller FMS fault code ERR 404 mean?

Accepted Answer

ERR 404 (Data Logging): "Job Not Found" / No Start Fix: LOGIC: Missing configuration file on the CF/SD card.

ACTION: Re-insert the data card. Verify the "Job ID" exists in the root folder.

Question 5

What does Keller FMS fault code INCL-01 mean?

Accepted Answer

INCL-01 (Mast Logic): Inaccurate Verticality Data Fix: LOGIC: Inclinometer Calibration Lost.

ACTION: Place the mast in a known "True Vertical" position (use a manual level) and perform a "Zero-Set."

Question 6

What does Keller FMS fault code MAST-ANG mean?

Accepted Answer

MAST-ANG (Mast Logic): Interlock: Feed Won't Move Fix: LOGIC: Mast Angle exceeds "Safe Drilling" window.

ACTION: Check the dual-axis inclinometer mounting bolts. Re-level the rig manually.

Question 7

What does Keller FMS fault code MEM-ERR mean?

Accepted Answer

MEM-ERR (Data Logging): "Disk Full" / Data Loss Fix: LOGIC: SD/CF Card Write-Protection or Failure.

ACTION: Replace the industrial-grade SD card. Format to FAT32 only.

Question 8

What does Keller FMS fault code MEM-FULL mean?

Accepted Answer

MEM-FULL (Data Storage): Unit Won't Start New Log Fix: LOGIC: Circular Memory Disabled / Storage Full.

ACTION: Extract existing data using "Logger DCX" or "Maestro" software. Toggle "Endless Memory" in settings.

Question 9

What does Keller FMS fault code P-LOW mean?

Accepted Answer

P-LOW (Sensors): Inaccurate Grout Pressure Readings Fix: LOGIC: Pressure Transducer 4-20mA Signal Low.

ACTION: Check for a "popped" pressure diaphragm or cement ingress in the sensor port.

Question 10

What does Keller FMS fault code P-ZERO-ERR mean?

Accepted Answer

P-ZERO-ERR (Sensors): Negative Pressure Shown Fix: LOGIC: Pressure Transducer "Zero Offset" Out of Range.

ACTION: Open the grout line to atmosphere and perform a "Tare" or "Zero" in the FMS menu.

Keller FMS Fault Codes

Code	System	Symptom	Full fix
0x1E8	System Power	Unit Won't Boot / Screen Frozen	View fix
COMM-01	Interface	No Engine Data on FMS Screen	View fix
ERR 249	Network	Data Logging Stopped / No Display	View fix
ERR 404	Data Logging	"Job Not Found" / No Start	View fix
INCL-01	Mast Logic	Inaccurate Verticality Data	View fix
MAST-ANG	Mast Logic	Interlock: Feed Won't Move	View fix
MEM-ERR	Data Logging	"Disk Full" / Data Loss	View fix
MEM-FULL	Data Storage	Unit Won't Start New Log	View fix
P-LOW	Sensors	Inaccurate Grout Pressure Readings	View fix
P-ZERO-ERR	Sensors	Negative Pressure Shown	View fix
RPM-DEV	Drill Head	Inaccurate Speed Display	View fix
TH-ALM-01	Monitoring	Grout Batch Rejected	View fix