IanS
10-06-2008, 06:26 AM
Fujitsu - General AS18-NR Split system
Hi, This is my first post on this forum because this is the first time I have ever owned an Air conditioning system. I am a Brit now living in Sydney and have purchased a property with two systems. The ducted system upstairs runs fine but the smaller split system downstairs keeps on going to defrost.
It is winter here so I am running as a heater and every 5 minutes it stops heating and starts the defrost cycle. (indicator light comes on) pumps out a small amount if cold air then 4 minutes later whooshing sound and it bursts back into life as a heater again. It is between 10 & 15 degrees Centigrade outside so its not really cold. The outside heat exchanger is definitely not freezing up but as an experiment I disconnected the heat exchanger temperature sensor in the outside unit and this improved the situation so that its now 13 minutes on and 4 minutes off.
I don't have a manual but all air filters are and heat exchangers are clean. There doesn't seem to be much else I can maintain.
Any body want to suggest what might be the cause? What would be the effect if I was short on gas?
thanks in anticipation
Ian
Hi, This is my first post on this forum because this is the first time I have ever owned an Air conditioning system. I am a Brit now living in Sydney and have purchased a property with two systems. The ducted system upstairs runs fine but the smaller split system downstairs keeps on going to defrost.
It is winter here so I am running as a heater and every 5 minutes it stops heating and starts the defrost cycle. (indicator light comes on) pumps out a small amount if cold air then 4 minutes later whooshing sound and it bursts back into life as a heater again. It is between 10 & 15 degrees Centigrade outside so its not really cold. The outside heat exchanger is definitely not freezing up but as an experiment I disconnected the heat exchanger temperature sensor in the outside unit and this improved the situation so that its now 13 minutes on and 4 minutes off.
I don't have a manual but all air filters are and heat exchangers are clean. There doesn't seem to be much else I can maintain.
Any body want to suggest what might be the cause? What would be the effect if I was short on gas?
thanks in anticipation
Ian