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RobS
@robs
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Joined: Oct 15, 2024
Last seen: May 25, 2026
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Topics: 0 / Replies: 134
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RE: Setback savings - fact or fiction?

The predicted values are based on assumptions and it is these assumptions that need testing IMHO. Your 9-10 April graph shows that prior to your se...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Setback savings - fact or fiction?

I'm not James but here's some thoughts... Have you tried to control for solar gain? And what about controlling for wind chill effects (speed an...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

Thanks, if the water can drain out of the heat pump without any issues in sub-zero temperatures then that's one possible issue ruled out. But if th...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

@trebor12345, a few questions if you don't mind... Does the water come from drain holes in the bottom of the heat pump or is there a pipe to carry ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

It is usual for the flow temp to start to drop as a heat pump approaches a defrost, here's a 7kW Vaillant like yours doing the same (if less pronounce...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old ASHP

@trebor12345 @jamespa If it helps any this documentsays the Hitachi RAS-3WHVRP1 can modulate down to 2.1kW at 7C OAT and 35C flow temp. So another ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Effect of Mitsu PAR WT60 Wireless Controller

Hi David, If your Mitsi is still on weather compensation then the WT60 should act as an internal temperature limiter. The temperature it's set to i...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Mitsu Wireless Controller and MelCloud

Hi David We have an FTC7 but the settings seem to be similar to an FTC6. Our room sensor settings are: Zone sensor selection sets zone 1 to RC1 ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Failed install (initial SCOP1.8), clueless installer compounded by poor manufacturer support. Help needed desperately!

This might be useful for @bart From/p> "Warning: It is vital that the system does not cycle on and off repeatedly as this will lead to excessive w...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop

Hi @m1kegibson Maybe a long shot but is the controller in holiday mode? There would be a suitcase symbol towards to top left of the screen if it is...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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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...

1 year 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...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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