sallylillian
LIFE MEMBER
But now I think there is a 30 mins delay in switching solar to gas to avoid ocillation in marginal conditions.
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If I understand this correctly the AES can switch a relay with 12v 0.2 amp max.I'm guessing that the relay would disconnect the fridge from the EHU circuit and connect it to the inverter outlet circuit.
@Lenny HB - could this work ?
But now I think there is a 30 mins delay in switching solar to gas to avoid ocillation in marginal conditions.
Hi MartinIf I understand this correctly the AES can switch a relay with 12v 0.2 amp max.
Der
Ausgangsstrom der Klemme „AES
“ beträgt 12V
max.
0,2A.
Bei größeren Verbrauchern regelt der Ausgang ab
und ist erst
nach einer Abkühlphase wieder belastbar.
Für
die Versorgung
größere
r Verbraucher ist dann ein Lastrelais zwischen zu schalten.
I did cheat and ask google
Of the
Output current of the terminal "AES
"Is 12V
Max.
0.2A.
For larger consumers, the output is controlled
And is first
Can be reloaded after a cooling phase.
For
the supply
more
R load then a load relay is to be switched between.
Hi RobertHi Martin
I wasn't referring to the Dometic relay
Instead I was suggesting an independent relay that would connect fridge to the inverter, and disconnect the fridge from the EHU circuit. Triggered by the S+
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Thanks MartinHi Robert
I didn't explain properly the 12v 0.2 amp is the spec of the S+ signal from the Votronic controller.
Martin
I guess anything is possible if you try hard enough but it would raise other questions and issues and again when you are on the road the S+ could have the relay switched to inverter power to the fridge (assuming you run the inverter on the road) when the S+ decides to come off solar it would close the relay depriving the fridge of what it sees as a 240v supply and it will go straight to gas which could be in a service station.I wonder if there was a way to use the S+ to trigger a relay to connect 240v from your inverter to power the fridge when there was excess solar?
Hi RobertThanks Martin
Do you think my idea for the home made relay would work, allowing the fridge to be connected to the inverter?
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@Lenny HB I am sure that you are 100% correct, for me it is something for nothing as it works with a short length of cable and a 59 pence Maplin's diode, to be honest I just wanted to see if it would or if I could make it work and after that the fun was over and it didn't matter if I never used it again, but the truth "for us" is that yes it works and doesn't seem to deteriorate the performance of the fridge (all fridges are different) YES it saves a bit of gas will it make me rich NO does it matter either way NO.Am I correct in thinking all of you guys discussing this have refillable gas systems and LPG is cheap the fridge doesn't use much gas and we all know it works better on gas.
SO- Why bother?
Appears to be a case of it's there so we are going to use it even if performance is worse.
Seen that that's how I knew you liked a fiddle/challenge as much as the rest of us.I revamped the mains on mine so fridge and charger are only powered when on EHU. See here.
Hi Robert
I possibly answered or at least partly answered your question while I was addressing a different post, I am struggling to see how it would work practically but that's partly because if I put our inverter on it will automatically power the fridge as we supply all 240v apart from the battery charger via the inverter change over.
I mentioned above the potential for service station problems but it depends on how and when you run your inverter and indeed how the fridge is wired into the system as I get the feeling they are all a little different.
If you have a MassCombi inverter/charger mains unit like Mastervolt or Victron does the fridge run from the inverter side when the mains is not present and then what stops it flattening the batteries? if it did you could just interrupt the mains incoming with a S+ switched relay and then the inverter would take over running effectively via solar.
Martin
The NO contacts are rated at 30 amps but the NC only at 10 amp, just enough if you were using your inverter at max..
I was planning to have the inverter feed just the 240v sockets
Your suggestion for the relay is exactly what I had in mind
I found a potential relay on EBay
https://www.ebay.co.uk/itm/122327365987
@Lenny HB
Appreciate your comments about gas being cheap, but if you're somewhere where Autogas is not widely available, then any way to conserve gas is a benefit and reduces my carbon footprint too
Real men don't read instructions and love a fiddle.Seen that that's how I knew you liked a fiddle/challenge as much as the rest of us.
Martin
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I amI thought you were fitting the Victron charger/inverter that unit does it for you.
Re oven, just had van in for hab service and technician rang me to tell me the oven wasnt working properly.Well after getting all excited with the fridge getting down to below zero on the drive at home, back to normal Dometic performance when it's full of food. Running on gas middle and bottom of fridge 8.7 to 10.9 deg, top shelf 2.2 to 2.9 deg. I feel a @Robert Clark in internal fan mod coming on.
The TecTower oven up to their usual high standard, last night after letting it warm up for 10min put somethng in that needed 20min, 1 hour 10 min later it was just about ready and that was on full blast.
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