I have a heat pump that works fine on cooling but when switch to heating trips on high head pressure it only runs for about 1 minutes.
indoor fan is fine, filter is clean, this is a Ruud Heat pump
An expert who has achieved level 2 by getting 100 points
An expert who has answered 20 questions.
An expert that has over 10 points.
An expert whose answer got voted for 2 times.
Re: RE: Heat Pump
It would sound likely the check valve assembly for the indoor coil isnt checking corectly . some units have orphis assembly and some have thermostatic expantion valves with check valve . eather way youll not be able to make repairs without correct equipment to open the sealed system and look for the problem . You will have to call in the experts im sorry to say. wish i could have helped more. please leave fead back. thanks
a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Repairman (only for users in the US for now) and get all the help you need. Goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
If I had to guess you have a bad reversing valve. valve sticking, compressor not being able to pump refrigerant, then drawing high amps, overheating and tripping the breaker. If you have tools and experience, try tapping on the valve gently to free it up while switching.
Your coils on the outside unit may need cleaning.When they get dirty, air cannot flow through them to remove heat from the refrigerant. When this happens pressure increases until it trips a safety and shuts the unit down.
It won't run again until the pressure drops to a safe level. Also check your drain line..Make sure it's dripping.If not it's clogged and that will trip the safety switch not allowing water to back up
WELL this could be a couple of problems the reversing valve could be stuck either from not enough pressure which would be a leal and low on freon or the unit is off on low pressure switch/high pressure switch from either being low on freon or something restricting it and caused unit to shut down, ive been a servicer for many years and if it gets below 30 degrees outside i would recommend running the e-heat anyway it does cost more money minute for minute. but you will find it will heat alot faster in those colder nights than the heat pump therefore cost is about the same.
as far as not switching over could be low on freon or a stuck reversing valve... is the outside even running in cool mode if not the you may have a tripped pressure switch...good luck
Check your indoor air filter. When the unit is in heat pump mode the indoor unit is cooling the air, ie. removing the heat from the unit. If the air flow is restricted then the unit will run high head pressure. If the filter is clean then maybe something else is restricting the air flow of the indoor unit. The other possiblity is that the unit is over charged. When in cooling the overcharge will not create the problems that it will in heating mode. The only proper way to charge a heatpump is to remove ALL the refrigerant and then wiegh in the proper amount of refrigerant into the system.
That's going to be in your installer configuration. Check and make sure the G terminal has a wire connected to it at the tstat , and that connection it tight. In the configuration menu, make sure it is set for a heat pump, elected heat. It seems to me that the tstat doesn't know its connected to a heat pump. Should be able to locate aodel # for tstat on the back of it. And ask Mr. Google for a manual, if you don't have 1. Hope this helps!
You may be right in looking at the motor. It uses a different speed on heat than cool. The heat cycle uses low speed, usually red. Some manufactures use blue (medium). Cool uses black, high speed. If you are confident, switch the low speed wire with the high speed and see if this changes anything. If the fan motor isn't the problem, check the other setting (cool) if the overload trips, you may need to look into a new capacitor or compressor, if so, you can install a hard start kit. these are start boosters, and are inexpensice, sometimes they will give another year out of the comp. but I've put them on and they have lasted 5 years.