🔧 Meter MedicFix your prepaid meter error — step by step

Select your meter brand below. Each error code has verified causes, DIY fix steps, and DisCo contact info.

Conlog
18 error codes
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Hexing
15 error codes
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Mojec
7 error codes
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All Error Codes

ConnEctConnection Wait StatelowDDDDDToken Already UsedlowE01Meter Not InitializedcriticalE02Meter Not CalibratedcriticalE03Internal Memory/Hardware ErrorcriticalE04No Supply VoltagehighE07CIU Communication ErrormoderateE08Wireless UIU Interface ErrorhighE09Incompatible UIUhighE10Software/Firmware ErrorcriticalE12-1Pairing CollisionmoderateE12-2Encryption ErrorhighE12-3Operational Mode CollisionmoderateE20Remote DisconnectionhighEEEEE 02Negative Credit BalancemoderateEEEEE 13Typographical Token ErrorlowEEEEEEeeCryptographic Token RejectionmoderateError 30CIU Keypad Communication Breakdownmoderate01Insufficient Creditlow02Overdraft Activelow03Overload — Switches Offhigh07Remote Switch-Outhigh807:0001Meter Cover Open (Tamper)critical807:0002Terminal Cover Openhigh807:0004Over Voltagehigh807:0020Under Voltage (Brownout)high807:0100Reverse Run Detectedcritical807:1000Meter Overloaded (Severe)highErr 01Invalid Token / Wrong Cryptographic SignaturemoderateErr 02Token Already UsedlowErr 03Token ExpiredlowErr 04Security Key Expired (TID Rollover Required)highErr 05Charging Amount Exceeds LimitlowCONNECTHandshake In ProgresslowFAILUIU Communication FailurehighLINK ERRORSevere PLC Signal AttenuationhighOVEr_CUrOver Current DetectedhighOVEr_POrMeter OverloadedhighREJECTEDToken Authentication FailuremoderateYellow LED FlashTamper Warning / Pre-Warningmoderate