Fujitsu Nocria heat pump economy function - what does it do and how does it work?

Forums › Home Workshop DIY › Fujitsu Nocria heat pump economy function - what does it do and how does it work?

timmmay

20858 posts

Uber Geek
+1 received by user: 5350

Trusted

Lifetime subscriber

#103548 10-Jun-2012 15:38

Does anyone know what the economy button on the fujitsu nocria heat pump does, or how it works? I guess it just gives the control unit the instruction that it's more important to be economical than to create a large heat output, I'm just curious how it works.

I did search before I asked but I couldn't find anything useful.

Niel

3267 posts

Uber Geek
+1 received by user: 80

Trusted

#638500 10-Jun-2012 16:10

It appears there are 2 aspects to economy mode. The compressor is not allowed to operate at maximum power but rather at it's more efficient range. Temperature can also be a couple degrees off (lower in heating mode, higher in cooling mode) so the compressor will probably not cycle between heating/cooling mode (or not cycle as much).

There is little explanation about economy mode, but that allows them to change the way it works without having to call it something else or confusing customers. In some models it means once temperature is reached it will increase/decrease the set point by 1 degree per hour over the next couple of hours. I suspect this is how temperature cycling is reduced, but this will only work if you keep your doors and windows closed (which you should, but I have family in AU that don't so it does happen).

You can never have enough Volvos!

timmmay

20858 posts

Uber Geek
+1 received by user: 5350

Trusted

Lifetime subscriber

#638515 10-Jun-2012 16:46

Thanks Niel, interesting about just sitting in the most efficient point if the cycle. It does still turn on and off quite a lot, but it does get up to the temperature we set - I have a thermometer in the hallway.

I'd only turn it onto non-economy mode if it was super cold and was going constantly. In that case though I'd turn on the other heat pump at the other end of the house to help it out.

richms

29098 posts

Uber Geek
+1 received by user: 10209

Trusted

Lifetime subscriber

#643742 20-Jun-2012 12:53

Usually its doing the opposite of boost. They just change it to normally be in boost mode where efficiancy is less and give you the option to go back to normal mode.

Richard rich.ms

timmmay

20858 posts

Uber Geek
+1 received by user: 5350

Trusted

Lifetime subscriber

#643751 20-Jun-2012 13:04

The Nocria has both high power and economy modes.