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 Post subject: Charging timer and preheat bug
PostPosted: Fri Sep 19, 2014 12:30 pm 
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Joined: Wed Jun 04, 2014 9:43 am
Posts: 501
Location: Sheffield, UK
Hi All,
You may have read the electric heating topic in which I complained that my PHEV on a 10A UK cable used ONLY the battery for preheating even though it was connected to mains.

Well, after a bit of messing about I think I've worked out it is a bug in the car's software and it will probably affect those with a 16A charger too.

If you have the charging set to timer either because you get cheaper electricity in the early hours or you do this as it is best for the grid then when you use the preheater it will heat from battery. If you do not set the charging timer then when you choose preheat it will at the same time start drawing power from the mains, even with my 10A charger. I realise it may still use more power than the mains can supply (4KW used against 2.75KW mains) but the difference is minimal.

The setting I had previously tested was to allow charging between 1am and 10am, with the preheater to start at 7.45. In this setup the heater used just battery. Even manually selecting the heater didn't take power from the mains.

My guess is that once the battery is charged, it transitions to "waiting to charge" mode even though you are within the allowed charging schedule and doesn't allow mains to be used for preheat.

This is an easy fix for myself as I will just use a timed outlet to achieve the same thing. Anyone with off peak electricity and that intends to preheat should check this out. Do the 16A charge points allow a charging schedule or is it entirely down to the car

Kind regards,
Mark

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Outlander PHEV GX4h
Pearlescent White, Protection Pack
Front & rear sensors, LED Side & Running Lights
Rear DVD & Media player, Roadhawk HD Dashcam
Steelmate TP-70 TPMS
Nokian WR SUV 3 winter tyres & spare alloys
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 Post subject: Re: Charging timer and preheat bug
PostPosted: Sat Sep 27, 2014 11:36 pm 
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Joined: Thu Aug 21, 2014 10:03 am
Posts: 37
Hi
So are you saying that if you set the charger to come on between say 1am & 7am, to gain the advantage of off peak, if you are still pluged into the mains and turn on the heating with the remote control it will draw its supply from the mains?
Regards
Peter


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 Post subject: Re: Charging timer and preheat bug
PostPosted: Sun Sep 28, 2014 1:58 am 
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Joined: Thu Aug 21, 2014 10:03 am
Posts: 37
Sorry what i meant is that if the timing cycle is complete and you are still pluged into the mains will the heating then be supplied from the mains?
Regards
Peter


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 Post subject: Re: Charging timer and preheat bug
PostPosted: Sun Sep 28, 2014 4:35 am 
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Joined: Wed Jun 04, 2014 9:43 am
Posts: 501
Location: Sheffield, UK
Hi,
No, what I'm saying is that even if you are still plugged into the mains the preheat will come totally from the battery. It won't use the mains at all.
This is still true if your timer is 1am to 11am, and the preheat is used (manually or timer) at 10am which is still within the timer window. In the example you gave, 1am to 7am, if you used preheat at 8am I would expect just the battery to be used as you are outside the time the car can use the mains.
Kind regards,
Mark

_________________
Outlander PHEV GX4h
Pearlescent White, Protection Pack
Front & rear sensors, LED Side & Running Lights
Rear DVD & Media player, Roadhawk HD Dashcam
Steelmate TP-70 TPMS
Nokian WR SUV 3 winter tyres & spare alloys
Delivered 1/7/14
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 Post subject: Re: Charging timer and preheat bug
PostPosted: Sun Sep 28, 2014 4:44 am 
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Joined: Wed Sep 03, 2014 4:16 am
Posts: 50
Ayensys ...

Thanks for investigating that previous posts were becoming like a Tolstoy novel on this subject { just kidding }.

I sure your findings will help not just me but many others ..

Fingers crossed picking up car Wednesday , what's a little bit cheeky is i'am having LEDS running lights fitted and asked for the old ones back they said its not possible as these are installed at the port. cant be bothered to argue as not up to it in my present state ...


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 Post subject: Re: Charging timer and preheat bug
PostPosted: Sun Sep 28, 2014 6:40 am 
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Joined: Wed May 21, 2014 10:10 pm
Posts: 506
Quote:
Fingers crossed picking up car Wednesday , what's a little bit cheeky is i'am having LEDS running lights fitted and asked for the old ones back they said its not possible as these are installed at the port. cant be bothered to argue as not up to it in my present state ...

englishman, I had the rear DVD's fitted at the port but I still got the original headrests as well. I would ask again :? ...

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 Post subject: Re: Charging timer and preheat bug
PostPosted: Sun Sep 28, 2014 7:05 am 
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Joined: Fri Jul 25, 2014 12:09 pm
Posts: 350
Location: Glasgow
Well I've been waiting for maddogs and Englishman to get together. Sorry couldn't resist....(apologies if it's been said before)

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 Post subject: Re: Charging timer and preheat bug
PostPosted: Sun Sep 28, 2014 12:17 pm 
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Joined: Wed Sep 03, 2014 4:16 am
Posts: 50
jdsx...

My sense of humour well that is my surname English so most of my email addresses are Englishman something or other.

On another note going to pick my car up on Wednesday my 26 yr old son will be driving , and from then on it will be just sitting on the drive until I get the ok from my Surgeon ....anyone wants to pop round and give it a wash your more than welcome.


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 Post subject: Re: Charging timer and preheat bug
PostPosted: Mon Sep 29, 2014 9:00 am 
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Joined: Sun Jul 13, 2014 5:31 am
Posts: 12
Avensys, that seems to be the same thing I have observed. The heater uses more than 3.3 kW possible 4 kW.

I have a 16 amps Charge Amps cable that can be set to 6, 10 or 16 amps. When the heater is on, at the 16 amps setting, the car pulls 3300 W from the wall socket but seems to use some battery.

At the 6 amps setting it uses 1300 W from the mains + a lot of battery.


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 Post subject: Re: Charging timer and preheat bug
PostPosted: Tue Sep 30, 2014 6:15 am 
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Joined: Wed Jun 04, 2014 9:43 am
Posts: 501
Location: Sheffield, UK
Treo wrote:
Avensys, that seems to be the same thing I have observed. The heater uses more than 3.3 kW possible 4 kW.

I have a 16 amps Charge Amps cable that can be set to 6, 10 or 16 amps. When the heater is on, at the 16 amps setting, the car pulls 3300 W from the wall socket but seems to use some battery.

At the 6 amps setting it uses 1300 W from the mains + a lot of battery.

Hi,

Yes, the heater is 4KW. Also, remember that even if the car can pull 4KW from the mains that is before the charging losses are involved so 4KW wouldn't make it to the heater anyway.

Actually though, that isn't the bug I describe. The preheat bug with charging timer means ALL heater energy use comes from the battery EVEN if it is plugged into the mains.

Kind regards,
Mark

_________________
Outlander PHEV GX4h
Pearlescent White, Protection Pack
Front & rear sensors, LED Side & Running Lights
Rear DVD & Media player, Roadhawk HD Dashcam
Steelmate TP-70 TPMS
Nokian WR SUV 3 winter tyres & spare alloys
Delivered 1/7/14
Image


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