Heat Pump won't cool house becuase outside unit won't stay on
We have a similar problem, but we have cleaned the outside unit and
still have to reset and sometimes it won't start up even after pressing
the reset button for over three minutes. When it does start up it works
fine but it only works for a few minutes.
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I can't answer your question. I just wanted to mention a slightly different way of looking at things. Manufacturers increasingly over the last few decades tend to be accountant -led and therefore very concerned with profitability. This means manufacturers do not make things better than they absolutely need to be, taking into account the projected market price and that of competitors.
These days equipment is built down to a price and possibly a target weight/size and to be capable of a certain duty cycle. The duty cycle of some domestic equipment is appallingly low and even versions aimed at a business market is surprisingly low.
Industrially rated equipment tends to be the only equipment that is designed and built for a 100% duty cycle. It would be reasonable to expect any equipment that is designed and built for a 100% duty cycle, regardless of the destination market, would cost at least as much as industrially rated equipment. Domestic equipment is often considerably cheaper than industrial or business equipment and the lower price tends to manifest as a reduced duty cycle and/or a reduced lifespan.
It could be wise to adjust your expectations somewhat...
i would get someone to check your refrigerant levels have you ever had the evaporator coil flushed and cleaned? proper refrigerant levels and proper airflow across coils are extremley important not to scare you but 18 yrs is a long time on a heat pump 9-12 years is the point where they really loose there efficiency going for a newer one would probably cut your operating cost in half if not more depending where you live there are a lot of people not familiar with heat pumps so i suggest finding a company that specializes in them to service your unit
Check t-stat and make sure fan is set to "Auto", that might be why fan is running all the time, or it could be a fan relay that is stuck closed. It sounds like you A/C is over charged or you have a bad high pressure switch, this was a common problem with this manufacture especially in the heat mode.
what i would do is see if the outside unit is working at all. when you first turn it on the air was warm due to the fact that the temperature inside was cooler than the set point. when it get within 2 degrees the unit shuts off the backup heat and your running on the hp alone. with both stages at the same temp you are running the hp and the electric heater and that can become veryexpensive. What I would do is make sure that the filters were clean and look at the outside unit and see if it has a red reset button on it, if it does reset it and see if the unit runs. If it doesn't then you need to call a quallified service person out to take care of the problem.
If your unit is blowing heat inside and it's not a heat pump. It will be most likely electric heat in your case.
Sounds like you have a split unit meaning the condenser is outside and the cooling and the heat features are inside or under your home.If your Rudd is a heat-pump the outside unit will cycle/blow cold air outside in winter and hot air will cycle/blow outside during the summer season. Now, if for some reason the heat is not coming on inside the house, would be the only reason that you would need to be concerned. Being a heat relay or breaker of could cause that problem. Hope this helps you, Sea Breeze