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RobS
@robs
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Estimable Member
Joined: Oct 15, 2024
Last seen: Jun 13, 2025
Profile Activity
Topics: 0 / Replies: 52
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RE: Help me understand my Mitsubishi Ecodan system

@carpenterstation When changing settings in the service menu you often need to shutdown the system first, so if it's running it'll ask you if it's...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Help me understand my Mitsubishi Ecodan system

@carpenterstation If you don't want to use summer mode then you could slide the zone set temperature sliders to their minimums in MELCloud to turn o...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Help me understand my Mitsubishi Ecodan system

@gary The FTC6 and FTC7 both have summer mode.

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Help me understand my Mitsubishi Ecodan system

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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: In the middle of an ASHP installation - a few questions (and issues)

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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Performance of Heat Pumps in Mild Weather

@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 ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Performance of Heat Pumps in Mild Weather

@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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance of Heat Pumps in Mild Weather

@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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Performance of Heat Pumps in Mild Weather

@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 ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Performance of Heat Pumps in Mild Weather

@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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 11.2kw Wireless thermostat drop outs

@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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance of Heat Pumps in Mild Weather

@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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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