Introduction: Why Your Meter Shows Errors
You bought the credit. You entered the token carefully. The meter beeped—but instead of lights, you got an error message. Or worse: it said “successful” but nothing happened.
Prepaid meter errors are frustrating, but they are almost never random. Each error code tells you exactly what is wrong with your meter or token. Understanding these codes is the first step to getting your power back.
This Accra Street Journal guide provides a complete list of ECG prepaid meter error codes—from the common “CRC value not equal” error on NURI meters to “invalid token” messages and system faults. Each error includes a clear explanation and step-by-step fix .
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Part 1: The Most Common Error – CRC Value Not Equal
Error: “The token CRC value is not equal to the CRC calculated with the data in the token”
This is the most frequently reported error by NURI prepayment meter users .
What It Means: The CRC (Cyclic Redundancy Check) is a built-in verification system that ensures the token you entered is valid for your specific meter. When you see this error, the token is being rejected because your meter needs a system update .
What Causes This: An ongoing emergency upgrade of the NURI Prepayment Meter system, part of the Standard Transfer Specifications (STS) protocol compliance .
The Fix (Relay Reset Method):
| Step | Action |
|---|---|
| 1 | Locate the “Display” knob or button on your NURI meter |
| 2 | Press and hold the button continuously |
| 3 | Wait until the word “Relay” appears on the screen |
| 4 | Release the button |
| 5 | Re-enter your token |
If That Doesn’t Work: Your meter needs the STS upgrade. ECG is performing these upgrades free of charge. Contact ECG customer service at 0302 611 611 to schedule an upgrade .
Part 2: Token Accepted But No Power
Error: “Successful” but lights remain off
The meter says the token was accepted, but you still have no electricity .
What It Means: The meter has accepted the token but failed to reset the internal relay that controls power flow .
What Causes This: This has been reported by numerous NURI meter customers, often during the STS upgrade period. The meter processes the token but does not apply the credit to restore power .
The Fix:
| Step | Action |
|---|---|
| 1 | Wait 30 seconds |
| 2 | Re-enter the same token |
| 3 | Check if power has been restored |
If That Doesn’t Work: Some NURI meter customers have reported success after performing the Relay Reset method (press and hold the “Display” button until “Relay” appears) and then re-entering the token .
Part 3: Invalid Token / No Response
Error: “Invalid Token” or meter shows no response
You enter the token, and the meter either does nothing or displays an “invalid token” message .
What It Means: The token was rejected because it does not match the meter’s expected format or because the token is not valid for your specific meter.
What Causes This:
| Possible Cause | Explanation |
|---|---|
| Incorrect token entry | You mis-typed one or more digits |
| Wrong meter number | You purchased credit for a different meter |
| Expired token | The token is no longer valid (rare for ECG tokens) |
| Meter needs upgrade | The meter is not compatible with new token standards |
The Fix:
| Step | Action |
|---|---|
| 1 | Double-check your meter number against the physical meter |
| 2 | Carefully re-enter the token, digit by digit |
| 3 | If still not working, try purchasing a small amount (e.g., GHS 10) to test |
If That Doesn’t Work: Your meter may need the STS upgrade. Contact ECG at 0302 611 611 .
Part 4: System Error – “Unable to establish a remote connection”
Error: “Unable to establish a remote connection to your meter”
This error appears when trying to purchase credit through the ECG PowerApp .
What It Means: The ECG system cannot communicate with your meter remotely. Your meter may be offline, or there may be a system-wide technical fault .
What Causes This: This can be a local issue (your meter’s modem is faulty) or a system-wide issue (ECG’s servers are down). In December 2025, ECG experienced a system-wide technical challenge that affected MMS-compliant meters .
The Fix:
| Step | Action |
|---|---|
| 1 | Try using the USSD code *226# instead of the app |
| 2 | If USSD also fails, there may be a system-wide issue |
| 3 | Check ECG’s official social media (@ECGghOfficial) for updates |
| 4 | Wait and try again later |
If the Problem Persists: Contact ECG customer service at 0302 611 611.
Part 5: Service Unavailable
Error: “Service is currently unavailable” (via USSD *226#)
When you dial *226#, the system responds that the “Service is currently unavailable” .
What It Means: ECG’s USSD payment gateway is temporarily offline .
What Causes This: This can be due to a system-wide technical fault, scheduled maintenance, or network issues between ECG and mobile money providers .
The Fix:
| Step | Action |
|---|---|
| 1 | Wait 15-30 minutes and try again |
| 2 | Try using the ECG PowerApp instead |
| 3 | Purchase from a physical ECG prepayment vendor |
| 4 | Check ECG’s social media for outage announcements |
If You Already Paid But Received No Token: Check your mobile money transaction history. If your account was debited, contact ECG customer service at 0302 611 611 to retrieve your token or request a refund .
Part 6: 40-Digit Token Required (CLOU Meters)
Message: Need to enter 40-digit upgrade token
Some CLOU prepayment meters require a 40-digit token to reset and upgrade the meter .
What It Means: Your CLOU meter is being upgraded as part of ECG’s STS protocol compliance program .
What Causes This: ECG scheduled system upgrades for CLOU meters from October to November 2024. Affected areas included Afienya, Nungua, Tema, Ablekuma, Ashiaman, Kaneshie, and Dansoman .
The Fix:
| Step | Action |
|---|---|
| 1 | Check if you have received the 40-digit upgrade token from ECG |
| 2 | If not, visit your nearest ECG prepayment vendor or district office |
| 3 | Call ECG’s contact centre at 0302-611611 for assistance |
Note: This upgrade is free of charge .
Part 7: Negative Balance
Error: Meter shows negative balance
Your prepaid meter displays a negative balance, but you have purchased credit .
What It Means: Your NURI network meter has switched from prepaid mode to post-paid mode. These meters have both functions, and when the prepaid mode fails, the meter automatically switches to post-paid mode, which can result in negative balances .
What Causes This: According to the Public Utilities Regulatory Commission (PURC), this occurs due to “failure in communication between the NURI network infrastructure, the meter, the Data Concentration Unit (DCU), and the Server.” Defective modems in affected meters lead to communication failure .
The Fix: This issue requires ECG intervention. The PURC has recommended that ECG District Managers ensure regular updates on the NURI network and communicate regularly with customers .
What to Do: Contact ECG customer service at 0302 611 611 and report the negative balance. Do not attempt to clear it yourself .
Part 8: App-Related Errors
ECG PowerApp Not Working
The ECG PowerApp may display error messages or fail to process your token purchase .
What Causes This: ECG has warned that users may experience issues with the ECG Power App during system upgrade exercises .
The Fix:
| Step | Action |
|---|---|
| 1 | Try using the USSD code *226# as an alternative |
| 2 | Purchase from a physical ECG prepayment vendor |
| 3 | Wait a few hours and try again |
| 4 | Check if your app needs an update |
Quick Reference Table: ECG Error Codes
| Error Message | Affected Meter | Likely Cause | Quick Fix |
|---|---|---|---|
| “CRC value not equal” | NURI | Meter needs STS upgrade | Press/hold “Display” until “Relay” appears, re-enter token |
| “Successful” but no power | NURI | Relay not resetting | Re-enter token; if fails, use Relay Reset method |
| “Invalid Token” | All | Wrong meter number or incorrect entry | Double-check meter number; re-enter carefully |
| “Unable to establish remote connection” | All (app users) | System fault or meter offline | Use USSD *226# instead |
| “Service unavailable” | All (USSD users) | ECG system down | Wait and try again; use app or vendor |
| 40-digit token required | CLOU | Meter upgrade in progress | Enter upgrade token or contact ECG |
| Negative balance | NURI | Communication failure | Contact ECG immediately |
| App not working | All (app users) | System upgrade | Use USSD *226# or vendor |
General Troubleshooting Steps
If your error is not listed or the specific fix does not work, try these general steps:
| Step | Action |
|---|---|
| 1 | Verify your meter number – Double-check against the physical meter |
| 2 | Check your token entry – Tokens are long (20 digits). Re-enter slowly |
| 3 | Try an alternative method – If app fails, use USSD *226#; if USSD fails, use app or vendor |
| 4 | Restart your meter – Turn off the main circuit breaker for 30 seconds, then turn back on |
| 5 | Check for outstanding balance – Some meters reject tokens if there is debt |
| 6 | Contact ECG – Call 0302 611 611 for assistance |
When to Call ECG Customer Service
Call ECG at 0302 611 611 if:
-
You have tried all troubleshooting steps and the error persists
-
Your meter has not been upgraded and is rejecting all tokens
-
You have a negative balance on your meter
-
You lost your token and cannot retrieve it through the app
-
Your meter is physically damaged or displaying unusual error codes
-
You believe you purchased a token for the wrong meter number
Alternative Contact Methods:
| Method | Contact |
|---|---|
| +233 302 611 611 | |
| [email protected] | |
| Social Media | @ECGghOfficial (Facebook, X, Instagram) |
| In-person | Visit your nearest ECG district office |
Frequently Asked Questions (FAQs)
1. What does “CRC value not equal” mean on my ECG meter?
This error means the token you entered cannot be verified by your meter. It typically indicates that your meter needs an STS protocol upgrade, which ECG is performing free of charge .
2. How do I fix a NURI meter that won’t accept my token?
Press and hold the “Display” button on your NURI meter until the word “Relay” appears on the screen. Release the button and re-enter your token .
3. Why does my meter say “successful” but I have no power?
This is a known issue with some NURI meters where the meter accepts the token but fails to reset the internal relay. Try re-entering the same token a second time .
4. What is the 40-digit token for CLOU meters?
CLOU meters require a 40-digit upgrade token as part of ECG’s STS protocol compliance program. If you haven’t received it, contact ECG at 0302 611 611 .
5. Why does my meter show a negative balance?
NURI network meters have both prepaid and post-paid mode functions. When the prepaid mode fails due to communication issues, the meter switches to post-paid mode, which can result in negative balances. Contact ECG immediately .
6. What should I do if the ECG PowerApp is not working?
Try using the USSD code *226# as an alternative, or purchase from a physical ECG prepayment vendor .
*7. Why is the USSD code 226# showing “Service unavailable?
ECG’s USSD payment gateway may be temporarily offline due to a system fault or maintenance. Wait 15-30 minutes and try again, or use the ECG PowerApp .
8. What does “Invalid Token” mean?
You may have entered the wrong meter number when purchasing, mis-typed the token, or the token may have expired. Double-check your meter number and re-enter carefully .
9. How do I know if my meter needs an STS upgrade?
If your meter rejects tokens with a CRC error or displays “invalid token” despite correct entry, it likely needs the STS upgrade. Contact ECG at 0302 611 611 to schedule a free upgrade .
10. Is the ECG meter upgrade free?
Yes. ECG has assured customers that the upgrade is free of charge and is crucial for maintaining the functionality of the metering system .
Conclusion: Know Your Error, Fix Your Meter
ECG prepaid meter errors can be frustrating, but they are almost always fixable. The most common error—CRC value not equal on NURI meters—has a simple solution: the Relay Reset method . If that doesn’t work, your meter needs the free STS upgrade.
For other errors, the key is knowing what the error message means. “Invalid token” usually means a wrong meter number or typo. “Service unavailable” means a system issue—wait and try again. “Negative balance” requires ECG intervention.
When in doubt, contact ECG customer service at 0302 611 611. Keep your meter number handy, and have your transaction details ready. The lights will come back on.
Frequently Asked Questions (FAQs)
1. What does “CRC value not equal” mean on my ECG meter?
Your meter needs an STS protocol upgrade. Press/hold “Display” until “Relay” appears, then re-enter token .
2. How do I fix a NURI meter that won’t accept my token?
Press/hold “Display” until “Relay” appears, release, re-enter token .
3. Why does my meter say “successful” but I have no power?
Re-enter the same token a second time .
4. What is the 40-digit token for CLOU meters?
An upgrade token for STS compliance. Contact ECG at 0302 611 611 if you haven’t received it .
5. Why does my meter show a negative balance?
Communication failure between meter and ECG server. Contact ECG immediately .
6. What if the ECG PowerApp is not working?
Use USSD *226# or a physical vendor .
*7. Why is 226# showing “Service unavailable”?
ECG system fault. Wait and try again .
8. What does “Invalid Token” mean?
Wrong meter number or typo. Double-check and re-enter .
9. How do I know if my meter needs an STS upgrade?
If it rejects tokens with CRC errors. Contact ECG at 0302 611 611 .
10. Is the ECG meter upgrade free?
Yes, it is free of charge
Source: Accra Street Journal
Last Updated on April 14, 2026 by Samuel Kwame Boadu
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Samuel Kwame Boadu is a Ghanaian media entrepreneur and storyteller with a passion for amplifying urban voices and uncovering everyday truths. He is the Editor-in-Chief and Founder of Accra Street Journal, a dynamic digital platform dedicated to capturing the pulse of Ghana’s capital—its people, culture, challenges, business, sports and innovations.
