Rota Disconnections
Ive just noticed this term, Rota Disconnections, on my electricity bill for the first time.
It presumably tells me where in the priority order my supply would be if general power cuts had to be made.
I've always thought that heat pumps should not just be disconnected from the mains to turn them off but shut down via the control panel, before switching off the power supply. Is this correct and is it true that the pump can be harmed if you don't follow that procedure? If so what are the implications for general power cuts and protecting heat pumps. Would they have to be timetabled so that heat pumps could be shut down correctly in advance?
Or am I worrying uneccessarily?
Mike
Grant Aerona HPID10 10kWh ASHP
I’ve not heard of these Rota Disconnections either; however, I have noticed that on the Tesla app that takes care of my 2 x Powerwall 2’s and under the heading of ‘Impact’ / ‘Backup History’, my system has experienced 12 events since February totalling 7 minutes; the longest was 2 minutes but most were a few seconds in duration. I was totally unaware of these events (as should be the case I believe) but I was rather surprised to see how many there were! We have rather ‘tired’ supply cables in the road and the SSEB have attended one or other spot in the pavement every week or so over the last few years so I am expecting a complete shut down sometime whilst the infrastructure receives a little TLC. The cabling is very much patched up but any original sections are over 90 years old now. We did have a complete loss of supply one day during Covid restrictions and could not heat the house nor heat up any food for some 12 hours that day; of course, had we had a Powerwall setup then…. Regards, Toodles.
Toodles, he heats his home with cold draughts and cooks his food with magnets.
Modern monobloc heat pumps will not be harmed by power cuts. They don't have a refrigerant pump down system as the low charge quantity doesn't necessitate. We get multiple power cuts a year as the underground cabling in the village is post WW2 paper insulated aluminium conductors. These were developed when copper was scarce and expensive. Their useable life expired a long time ago. Over time the dielectric properties of the paper breaks down, with the resulting short circuit in the cable popping the fuse in the sub-station and blacking out the properties the cable supplies. Northern Powergrid are forever digging the roads and paths up in the village and splicing patches in. The whole lot needs ripping out and replacing, but they have shareholders dividends to pay and Board of Directors' remuneration to meet, so network maintenance is a low priority.
@allyfish Well, of course shareholder’s dividends and Fat Controller’s Bonii (plural of bonus!;-) ) are of a far higher priority than customer service! Regrets, Toodles.
Toodles, he heats his home with cold draughts and cooks his food with magnets.
- 21 Forums
- 1,963 Topics
- 42.6 K Posts
- 39 Online
- 2,278 Members
Join Us!
Heat Pump Dramas?
Thinking about installing a heat pump but unsure where to start? Already have one but it’s not performing as expected? Or are you locked in a frustrating dispute with an installer or manufacturer? We’re here to help.
✅ Pre-Installation Planning
✅ Post-Installation Troubleshooting
✅ Performance Optimisation
✅ Complaint Support (Manufacturer & Installer)
Latest Posts
-
RE: NIBE F2040 12 kW heat pump and 100 liter buffer tank
@cheshirejohn thanks for the update and for sharing. I’...
By Mars , 16 minutes ago
-
RE: Newbie out of her depth – Samsung AE120RXYDEG 12kW heat pump
@jamespa @bontwoodyHeat loss calculations found and att...
By BAMi , 2 hours ago
-
RE: What is the best strategy for operating a very oversized heat pump?
I think you are right to frame the question as you did,...
By Old_Scientist , 2 hours ago
-
RE: Setback savings - fact or fiction?
Here's the same plot, less the R squared values, done q...
By cathodeRay , 3 hours ago
-
RE: SolarPV tables / online calculator
We've only had our solar since last June, but so far fo...
By Old_Scientist , 3 hours ago
-
@robs useful thread! Thanks for sharing - Octopus are c...
By big_si , 3 hours ago
-
RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@jamespa Agreed. I think it’s a case of much over muchn...
By Mars , 5 hours ago
-
@eliuccio Unfortunately, whilst I agree with a lot of...
By JamesPa , 6 hours ago
-
RE: Samsung Gen 7 R290 12kW is not behaving how I expected
Definitely its in the 20xx FSVs. Conversely it may be...
By JamesPa , 7 hours ago
-
RE: Towel rails. An unexpected final hurdle
We have both Normal Rad for heating the room and then a...
By IRMartini , 8 hours ago
-
RE: Heat Pump Sizing & Installation Costs
Perhaps useful to have installed date too? To get conte...
By Tim441 , 11 hours ago
-
RE: F.788 Building circuit pump reports internal fault - Vaillant Arotherm
Guess I have to wait for engineer visit. I really hope ...
By jeegnesh , 1 day ago
-
RE: Act now to defer the UK road tax increase on EVs
@majordennisbloodnok Damn right sir. my attempt at iron...
By Jancold , 1 day ago
-
RE: ASHP and heating issues in new build house
That’s good gives you more capacity. It made me think, ...
By Terry1812 , 1 day ago
-
RE: Seewet manhole cover within r290 exclusion zone
Thanks! I asked Vaillant, and they say I should be fi...
By dbrb2 , 1 day ago
-
Looking for the Grant Aerona 3 setting to turn off completely at 20 OAT
I'm running my Aerona 3 on WC and the 'warm end of that...
By damonc , 1 day ago
-
RE: Do I just go with the lowest quote for my heat pump?
So after signing in Sept in two weeks the install may s...
By Jancold , 1 day ago
-
RE: Victorian Semi Retrofit / Extension ASHP and UFH Advice
When you are renovating is always a good time, as it ma...
By JamesPa , 2 days ago
-
RE: Just one room not reaching desired temperature
Looks like this issue is now resolved. Aira installed a...
By ChandyKris , 2 days ago
Latest Topics
-
Heat Pump Sizing & Installation Costs
By Mars 13 hours ago
-
Volumisers in Heat Pump Systems: Does Placement Matter?
By Mars 14 hours ago
-
SolarPV tables / online calculator
By MichelleC 21 hours ago
-
By Toodles 2 days ago