🔧 How to Fix Mojec FAILUIU Communication Failure

⚡ Quick Answer

FAIL means: The User Interface Unit (UIU) is unable to establish a PLC communication link with the external meter metrology unit. Fix: Plug UIU directly into a wall socket (NOT an extension). If grid power is off, insert dry-cell batteries. Move to the socket closest to the distribution board. Pair UIU using your serial-prefix-specific algorithm.

🟠 high
DIY fixable

What Causes FAIL?

The User Interface Unit (UIU) is unable to establish a PLC communication link with the external meter metrology unit. This is the most common Mojec error.

Root cause: UIU plugged into extension cord or filtered circuit. Surge protector stripping PLC signal. Grid power off. UIU not paired to meter.

🛠How to Fix

Plug UIU directly into a wall socket (NOT an extension). If grid power is off, insert dry-cell batteries. Move to the socket closest to the distribution board. Pair UIU using your serial-prefix-specific algorithm.

📞When to Call Your DisCo

Contact your DisCo if the error persists after trying the fix steps, or if you're uncomfortable working with electrical equipment.

AEDC

Abuja Electricity

📞 08039070070

💬 08152141414, 08152151515

✉️ customercare@abujaelectricity.com

BEDC

Benin Electricity

📞 0700-000-2332

✉️ servicedesk@beninelectric.com

EKEDC

Eko Electricity

📞 0708-067-1170

✉️ customercare@ekedp.com

EEDC

Enugu Electricity

📞 084-700-100

💬 08150826060, 08150826061

✉️ customerservice@enugudisco.com

IBEDC

Ibadan Electricity

📞 07001239999

✉️ customercare@ibedc.com

IKEDC

Ikeja Electric

📞 0201-7000-250

💬 09088951626

✉️ customercare@ikejaelectric.com

+ 5 more DisCos — see all contacts

⌨️Mojec Useful Shortcodes

CodeWhat It Does
009Display remaining energy balance (kWh)
100Display meter serial number (alternative)
804Display meter serial number (Inhemeter variant)
203Recall last token successfully loaded
045Mute buzzer (standard Mojec firmware)
812Mute buzzer (Inhemeter board variant)
613Mute buzzer (Longi board variant)

🔗Related Mojec Errors