Thanks for the replies. How far off are the factory settings?
My heat pump seems to be working better than it ever has since I tinkered with it, it hasn't ran for 12 months including all winter last year. We had panel heaters dotted around the place along with our stove and Aircon downstairs. At the moment the pump is heating the house great, even though we have extended the house over 80% of its original size after the heat pump was sized and fitted.
Our 6kw pump is heating our 1400 sq/f house, even though it got down to about 6 degrees last night.
To think it almost got chucked in the skip!