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Last seen: May 25, 2026
@gary The FTC6 and FTC7 both have summer mode.
Mitsubishi have a setting called summer mode for this. It's in the service menu under Operational Settings. There are settings for switching summer mo...
Given that in an area there will be ASHPs from various manufacturer with various defrost algorithms and each with a different heating load, the likeli...
@heatgeek The flow rate isnt controlled by Mitsubishi, the installers said 16-20 l/min was fine. Experimenting I've found 16 l/min to be a good ...
@heatgeek The switches to the flow rate were manual and just experiments, the system should work fine at 15-16 l/min if not for the condensate is...
@heatgeek I'm going to try to answer all your questions, just maybe not in the order you asked them - I think it'll make more sense this way. Firs...
@heatgeek Happy to answer questions about our 8kW Mitsubishi. Yes, it's able to run at ~2.0kW output for extend periods with a dT of ~2C and a COP ...
@heatgeek @jamespa I hope this may help with the modulation discussion. Comparing the Hitachi 2.5 HP to the Mitsubishi R290 6kW (just one compresso...
@skyecraig I've had our FTC7 wireless thermostat lose connection to the controller a few times, does yours display 3 in the top right where the temp...
@trebor12345 I'm pretty sure Viessmann use an energy integral algorithm like Vaillant, so what we are seeing is that at a near constant outside temp...
@heatgeak It's good to talk about mild temperatures and heat pumps, they don't get discussed very often. It's a 8kW unit. It does prove that ...
As both Vaillants do DHW but the Samsung doesn't, you'd expect the daily mean COP of the Vaillants to be less. Also the first Vaillant does a defrost ...
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Any readers with an interest in Solar Farm generation i...
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RE: Heat Pump Operation in Summer - Valliant 7kW
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
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RE: Heat Pump Overpromising – What Were You Actually Told Before You Bought?
@editor Sorry Mars, I didn’t see a notification about ...
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RE: Hitachi Heat Pump being replaced with Vaillant
Yes to be configured as a volumiser. The pump is to be...
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RE: Anyone concerned about GivEnergy?
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RE: How many people are happy with their ASHP and do you believe them?
I agree, and not. Energy prices are a largely politica...
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Yes, you will need to notify them even if the inverter ...
By Old_Scientist , 7 hours ago
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@tony-stolz, I think @jamespa has already covered the h...
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@editor "The interesting bit is that many modern invert...
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With the prospect of warmer weather this week, I brough...
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
I reached out to MCS directly last week on this and her...
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