Auto Defrosting

[matt.yelland]

Hi all,

Got a quick question about air con. I do mostly refrigeration, but have been asked to have a quick look at the air con at my partners work. All they have said so far, is when both units are switched on, they just flash auto-defrost.....

Any idea what this means?

Many thanks

Matt

[install monkey]

make,model, run it in cooling check running pressures

[The Viking]

Most likely a lack of refrigerant.

The defrost symbol on most A/C systems are the same as the pre heat symbol. If the indoor coil fails to reach a certain temperature (between 35 & 45ºC depending on make and model) the unit will stay on pre-heat/defrost.

Other things to check includes free airflow around outdoor unit, outdoor unit's fan running and outdoor unit's coil clean/free of ice.
But if it looks OK then the next thing to do is to reclaim and check the charge.

Good Luck
:cool:

.

[matt.yelland]

Hiya

Thanks for the advice... Haven't been there yet to get details, but will post when I get there. It was installed about 4 months ago, but they cant get hold of the company who put it in

Many thanks