Eco 7 display

GingerBob_3

Just need to check if the various meter readings on an Eco 7 meter are always assigned the same identifier. These identifiers are P1, P2 and P3. In all cases is P1 day, P2 night and P3 heat? Or if not, what is the correct assignment?


Thanks, GB.

[Deleted User]

In my experience they are not always allocated the same number.In my area in S.Yorks they were traditionally fitted as r2= day then later on r2 was more likely to be set for night rate. The correct assignment is what your particular meter is set for and more importantly where the cheap 7 hours are in the 24 hrs as that too can be far away from the published times. Mostly though, the newer digital meters are r1-day,r2-night and r3-total ( not heat ). Observe the meter yourself to find when the cheap rate switches on. The old 24 hr circular analog timer switches the cheap 7 hours can be anywhere in the 24 hrs, digital meters can drift an hour or two and radioteleswitch meters are usually spot on to a minute or so. All digital timer clocks are set to GMT and don t change for BST

GingerBob_3

sacsquacco wrote: »

In my experience they are not always allocated the same number.In my area in S.Yorks they were traditionally fitted as r2= day then later on r2 was more likely to be set for night rate. The correct assignment is what your particular meter is set for and more importantly where the cheap 7 hours are in the 24 hrs as that too can be far away from the published times. Mostly though, the newer digital meters are r1-day,r2-night and r3-total ( not heat ). Observe the meter yourself to find when the cheap rate switches on. The old 24 hr circular analog timer switches the cheap 7 hours can be anywhere in the 24 hrs, digital meters can drift an hour or two and radioteleswitch meters are usually spot on to a minute or so. All digital timer clocks are set to GMT and don t change for BST

Thanks. My enquiry is to help my son, who has the misfortune to be with npower. They are trying to blag him for over £1000 based on readings from a meter that they acknowledge themselves was providing incorrect readings! We just need to be absolutely sure that when we tackle them about it we have the right assignment of readings on the new meter.

GingerBob_3

Got it: r1 looks like night rate (much the lower of the two readings), r2 is presumably day rate, and T is indeed the total of the other two.

Autumnella

Like Sacs said one of the reads will probably be the total of the other 2, unless it's not actually an E7 meter, and it's actually an unusual or complex meter. You can normally work out which is day and night by taking reads sometime during the day then other reads a few hours later and see which one has moved during this time, this will let you know which one the day read is.

[Deleted User]

The older meters both night or day could have "gone round the clock " and started at zero again so its not always the lowest read which would be night/day. adding day and night together would nt equal the total if that was the case .Night storage users nearly always use more on the night rate than day. The only surefire way is to observe the meter to see when night rate starts. The meter should indicate the active rate by either defaulting to show the reading or a blinking cursor or reading. Some meters dont give any indication and then its a case of seeing which read advances at night or day.Usually night rate in BST will be starting around 1 am

MYMETERISCOMPLEX

Agreed, the way to check is to see which is going round at what time. Where not gone round the clock though you want the night reading to be higher as that's cheaper and when your heating and hot water should be working

GingerBob_3

The meters were installed in February and all readouts were zero. I'm assuming the lower reading is night, but we'll check as suggested just to make sure.


The previous meter had four readouts, two of which were referred to as 'heat'. One never moved and stayed at zero, the other clocked up usage. What is this all about? The property has some fancy combined heat and power unit with gas supplied by the nearby farm. What is the purpose of the 'heat' meters - what electricity usage do they represent?