just had same problem with my meter and when i googled i came across this thread so here are the codes for future reference
Job Type
Action Required
Error 1
Meter fault. A meter change is required.
Error 2
Meter fault. A meter change is required.
Error 3
Meter fault. A meter change is required.
Error A1
Re-insert key, if this doesn’t work a new key is needed.
Error A2
New key needed.
Error A3
Re-insert key, if this doesn’t work a new key is needed.
Error A4
This is the wrong key for the meter. New key needed.
Error A5
An Emergency Service Order (ESO) should be raised to reset the meter as a new key will not fix this problem
Error A6
Possibly using an old key. New key needed.
Error A7
Re-insert key, if this doesn’t work a new key is needed.
Error A8
Meter fault. ESO needs to be raised.
Error A9
Meter fault. ESO needs to be raised.
Error B1
Re-insert key, if this doesn’t work a new key is needed.
Error B2
Re-insert key, if this doesn’t work a new key is needed.
Error B3
New key needed.
Error B4
This is the wrong key for the meter, new key needed.
Error B5
New key needed.
Error B6
New key needed.
Error B7
Re-insert key, if this doesn’t work a new key is needed.
Error B9
New key needed.
Error 10
This is the wrong key for the meter or there is dirt on the contacts. Clean the key, if this doesn’t work a new key is needed.
Error 11
There is dirt on the contacts or faulty key. Try cleaning key, if this doesn’t work a new key is needed.
Error 12
Meter fault. A meter change is required.
Error 13
There is dirt on the contacts or faulty key. Try cleaning key, if this doesn’t work a new key is needed.
Error 14
There is dirt on the contacts or faulty key. Try cleaning key, if this doesn’t work a new key is needed.
Error 15
Old customer key. New key is needed.
Error 16
This is the wrong key for the meter. New key needed.
Error 17
There is dirt on the contacts or faulty key. Try cleaning key, if this doesn’t work a new key is needed.
Error 30
New key needed.
Error 64
New key needed.
Error C1
Meter fault. A meter change is required.
Error C2
Charge the key at a Paypoint and re-insert the key. If this doesn’t work, a new key is needed.
Error C3
Charge the key at a Paypoint and re-insert the key. If this doesn’t work, a new key is needed.
‘KEY’
‘DEBT’
‘RESET’
If this remains on the screen when the key is removed it indicates a meter fault. An ESO needs to be raised to exchange the meter.
‘RATE 1’
Only Meter fault if remains on screen once key is removed
Error 99
Meter fault. A meter change is required.