Why does my Heat pump fashion false starts? Our heatpump unit outside works, but contained by between the running times,...

Our heatpump unit outside works, but contained by between the running times, it makes a echo like it is going to start up again, but next doesn't run. It does this every two minutes or so and lasts in the region of 3 seconds. It sounds exactly the method it does when it is kicking on, but then freshly doesn't run. Any ideas?
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Answers:    If the section wasn't serviced in a while consider have it done. The noise could be the compressor kicking within, it could be a bad relay, it could be dirty contacts
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Do you hear any echo at all from the component? A heat pump will require going into defrost mode periodically when the outdoor warmth is approximately 45 degrees or lower. During defrost the supporter will not turn but the compressor will still run. If you still hear some noise during this process you are probably audible range the compressor. You may also see steam and hear pieces of ice falling. The part will cut off the condenser enthusiast in instruct to build up heat surrounded by the coils and melt any accumulate ice.