Your electricity key prepayment meter - Npower

Having problems?Sometimes you may see an error message on your meter screen.Here are some of the most common errors and guidance on how to fix them.Display What this means What you need to doError 10Error D4Error A4/B4Token NoError 1 or E1You may be usingan old key.Your key isn’tprogrammed correctly.The meter serialnumber on yourkey doesn’t matchyour meter.The meter serialnumber on your keydoesn’t matchyour meter.Your meter hasdeveloped aninternal fault.First, check to make sure you’re usingthe most recent key you’ve receivedfrom us. Please contact us - we’ll giveyou an 8-digit number and tell youhow to use it to reprogramme yourkey. Make sure you have a pen andpaper to hand when you call.Please contact us - we’ll give you an8-digit number and tell you how touse it to reprogramme your key. Makesure you have a pen and paper to handwhen you call.Please contact us - we’ll give you an8-digit number and tell you how touse it to reprogramme your key. Makesure you have a pen and paper to handwhen you call.Please contact us - we’ll give you an8-digit number and tell you how touse it to reprogramme your key. Makesure you have a pen and paper to handwhen you call.Please contact us - we may need toarrange for an engineer to visit you.10