STS Prepaid Meter Codes: UIU codes, Error codes & Display codes

STS, Standard Transfer Specification, prepaid meter has different codes that allow users to operate it with ease. So, if you are using an STS prepaid meter to measure and manage your energy consumption, it makes sense for you to know the STS prepaid meter codes to enable you to make use of the meter with ease. 

There are different kinds of STS prepaid meter codes, like the code for general meter display information, error codes and the UIU codes. Each of these codes has a particular function that they perform, including the error codes that dictate meter malfunctioning.

If you know these codes, you will be able to operate your prepaid meter without hitches. So, in this article on STS prepaid meter codes, we are going to list most of the STS prepaid meter codes and their meaning to enable you to know what each of the codes means and what you should do if your meter screen displays the code. 

STS Prepaid Meter Codes

As we noted in the introduction, there are different STS prepaid meter codes. For sake of clarity, we are going to divide the code into three, viz., the general meter display code, UIU display information, and error codes. Let’s proceed! 

General STS Prepaid Meter Display Information Code

The code for STS prepaid meter display information is summarized in the table below:

S/N	Meter Display Information	Meaning
1.	CT-BYPAS	Meter bypass detected
2.	CT-OPEN	Meter current circuit is open
3.	VOL-UNB	Unbalanced voltage
4.	HIGH-TMP	Temperature too high
5.	LOW-PF	Power factor too low
6.	N-DST	Disturbance of neutral line
7.	CUR-UNB	Unbalance in current occurred
8.	CUR-OVER	Current allowed threshold exceeded
9.	VOL-OVER	Voltage allowed threshold exceeded
10.	OVER PO	Power limit exceeded
11.	DISTU	Magnetic disturbance detected
12.	OPEN	Meter cover is open

STS Prepaid Meter UIU Display Information Code

The codes for STS prepaid meter UIU display information code are:

S/N	UIU Display Information	Meaning
1.	ACCEPT TOKEN	Token loading successful
2.	REJECT TOKEN	20-digit token rejected
3.	OLD TOKEN	Token has expired
4.	USED TOKEN	Token already used
5.	FULL	Overflow error due to enough credit
6.	OK	Operation accepted

STS Prepaid Meter Error Codes

The error codes that you may receive when using the STS prepaid meter are enumerated in the table below with their meaning attached:

S/N	Error Code	Meaning
1.	Err_01	Manufacturer code error
2.	Err_02	Expired key error
3.	Err_03	DDTK (Decoder Default Transfer Key) error
4.	Err_04	Overflow or full error
5.	Err_05	Key type error
6.	Err_06	Token format error
7.	Err_07	Token range error
8.	Err_08	Token function error

N/B;

The codes we listed in the above sub-sections may vary slightly depending on the brand of the STS you are using. However, the codes listed in this article are the ones that are common to most STS prepaid meters.