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HarriUp
@harriup
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Joined: Nov 25, 2021
Last seen: Jun 28, 2025
Profile Activity
Topics: 1 / Replies: 107
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RE: Flow temperature up and down like a yo-yo

Have you tried lowering the WC curve to see if that has an effect? The pump is stopping because the flow temperature is rising to its desired limit ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Help to check if my Ecodan set up correctly and running efficiently ?

@newhouse87 The pic of the main controller screen posted shows the system running in Target Room Temperature aka Auto Adaption mode. @disabledman I...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 8.5kW ASHP - 320L DHW Tank

@ambaz79 You can query Melcloud under Energy Usage and specify just one day and see pie charts of the energy consumed and generated for heating and ho...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan appears to be ignoring Temperature Compensation

@mcwatson1974 I'd concur with Derek that you might need to have the three-way valve checked to see if it is faulty. The HW cycle should have the wat...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Help to check if my Ecodan set up correctly and running efficiently ?

Let's clarify a couple of things. You have an Ecodan tank, so that will use a heat plate exchanger to transfer the heat to the cylinder. Getting the h...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan not getting to set flow temperature

Looking at your flow temps, when the space heating starts the flow and return rise quickly in parallel, there is then a slowing of the increase but mo...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan appears to be ignoring Temperature Compensation

It's most likely from the Main RC, the only other options are the Mitsi portable RC or a wired thermistor. The Ecodan doesn't take temperature info fr...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Looking for an Ecodan Expert

Could be the pairing between the receiver unit and the remote has been lost, or an issue with the receiver unit.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Looking for an Ecodan Expert

Hi @tfb8 I'm going to presume you have set the Dip switch SW1-8 to on to activate the wireless controller function at the FTC... A thermostat wire...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mitsubishi Ecodan & MEL Cloud

@stub13 You'll have to go into the service menu which is the spanner option to the right on the second of the main screens. Just Ok the password (a...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan ASHP cycling every couple of hours

@crustydoodle The system as a whole is definitely not operating ‘normally’, the issue is identifying a problem when a standard bit of kit, the EcoD...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan ASHP cycling every couple of hours

I wouldn't be so quick to dismiss the F9 error message either. Any error message indicates something not having functioned correctly. A quick search t...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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