Mitsubishi EcoDan Help?

LauBar

Hi there. I live in a house fitted with a EcoDan Air Source Heat Pump. I’ve noticed that the upstairs radiators get quite hot however the downstairs only ever slightly warm. I’ve supposedly got two circuits as I have a thermostat in the lounge, and also one in the main bedroom. Although quite how it works I’m not really sure as even when the bedroom is up to temperature it will carry on until downstairs also is at temperature. Almost as if they are on the same circuit. There are two gauges on the unit, one sat underneath some sort of pressure vessel at the top which reads approx 1.75BAR (the red indicator needle has been set to 1.5BAR) and another, which is located after the valves which reads 30psi (2 BAR), however the red indicator has been set at 40psi. I’ve opened the taps but the pressure won’t go any higher than what it is.

I don’t really know much about how these systems work, I’ve tried to figure most of it out but it’s just concerning the difference in temperature between upstairs and downstairs radiators. I get the impression I’m using a lot more energy than should be needed.

Any advice or knowledge greatly appreciated. Thanks.

sk240

Hi, you say the radiators are different temperatures which is probably right as they will probably have thermostatic valves installed.
I assume the actual room temperature is OK? where the radiator will only give out as much heat as it needs to to keep the room at a temperature.


The pressure gauge will be the pressure of the heating circuit, and typically i believe it should be between 1 and 2 bar when the system is on and hot.


I suggest that you try and find the manual, you should be able to find it online somewhere.

Fire_Fox

When you say "I live in a house fitted with an Ecodan Air Source Heat Pump ..." do you mean you are a tenant/ permitted resident, or that a previous homeowner fitted it? Do you know when it was last serviced or safety checked? Certificate from the landlord or a sticker somewhere on the system perhaps.

Davesnave

Despite the somewhat misleading title of the Forum, your post would maybe attract more or better informed answers here:


https://forums.moneysavingexpert.com/forumdisplay.php?f=78