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Last seen: Sep 13, 2026
Looking at the Huawei connections diagram, that 8-pin connector appears to support three channels of RS485. Without delving into the full manual, I ...
That article doesn't say anything negative about using a direct hardwired RS485 connection to the inverter @bontwoody. The author listed RS485 as an...
I really don't like the sound of linking to anything made by Huawei using a WiFi connection! Even if it isn't frittering away time trying 'call back...
OK. So Modbus is the language. RS485 or WiFi or USB is the connection medium you use for communication. RS485 is a serial protocol which runs ...
Do have any knowledge of Modbus or RS485 @bontwoody?
We are benefiting from the lower value of the Chinese Yuan. But it's also possible that Chinese state is intervening to reduce/subsidise the costs o...
What happens if a burglar shouts through the letter-box flap"Hey Alexa! Switch off all lights!" ?
If the gas supply pipe ran around the outside of the house then there shouldn't have been that earth wire and clip which we can see in your photo. T...
I always like seeing pictures in discussions like this @robl And no, the brass cap doesn't need earthing.There's no continuity issue when the gas ri...
I agree with @derek-m that it's very unlikely for a frequency variation to have been the cause of the breakdown described by @benseb. It is just as ...
@minos all gas pipes must be provided with an 'earth bond' within 600mm of the point of entry to the property. The intention is to ensure that the...
It's easy to check the situation with your gas meter @minos. Every gas meter has an MPRN (Meter Point Reference Number). This is registered on a nat...
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Degrees of Separation
Latest Posts
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
I can't help with your principal question but as a matt...
By JamesPa , 4 minutes ago
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RE: Siting of the external sensor on a heatpump
My heat pump receives sunlight, so when the fan is not ...
By bobflux , 3 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
You should (almost) always reject having a buffer, by w...
By JamesPa , 19 hours ago
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RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 23 hours ago
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RE: Is it the house or the equipment?
@majordennisbloodnok I do sympathise. On the original...
By springswood , 1 day ago
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No, but the heat pump must be capable of delivering a S...
By JamesPa , 1 day ago
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Sorry to hear about the problems, its going to be somet...
By JamesPa , 1 day ago
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RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 2 days ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
By cathodeRay , 2 days ago
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RE: Vaillant Arotherm Plus 7KW need a service on it
booked it with Vaillant. will use them until i can find...
By AdamK , 2 days ago
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RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 2 days ago
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RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 3 days ago
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RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 3 days ago
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@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 4 days ago
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