Xe-Series Fault Code
Free · no signupE:0866
Controller goes black or reboots.
System
Trip
Symptom
Controller goes black or reboots.
Diagnosis & fix steps
24V DC Logic Power Low.
LOGIC: The internal DC power supply dropped below the operating threshold.
Red Seal field insights
Check the DC Power Supply module. In dusty shops, the cooling fins on the power supply get covered in lint, causing it to overheat and drop voltage output.
Same code keeps coming back?
That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.
Read before you touch anything
- This is general reference information, not a repair manual. It is for trained, qualified technicians.
- Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
- Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
- You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
- Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.
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