Question about Amana PTC153B50AJ Electric Heat Air Conditioner

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Cycles in off

When unit is turned to off, the unit will run for short periods for an hour or more.

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Re: Cycles in off

Possible that this is normal to expel residual moisture gathered during normal operation.

Posted on Nov 28, 2007

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Why does the inside unit only blow for a short period then die?

The blower motor or controls to it are at fault. The unit may need cleaning. Call a tech! There's so many reasons you are having trouble. Its hard to tell without looking/troubleshooting. About the only thing you can check is your air filter or the indoor coil, if you can see the air entering side, to see if its covered by debris. If the unit runs for an hour and stops, it may be a simple part. But it may end up being expensive if it persists.

Jun 18, 2015 | Goodman Air Conditioners

1 Answer

AC compressor cuts off and on every minute or so.

The voltage thing is a normal for high ampere appliance and well within its design. However coming on for a short time and cutting off indicates a compressor running out of spec. Too high or low pressure. On a very humid period of several hours a unit too small for the cooling need can freeze over on the inside coil. Shutoff the unit for several hours to allow thawing. If in the 7 years of use the unit hasn't been dismounted and serviced there could be dirt and debris clogging the inside or outside coils. These finned coils are are aluminium and easily bent. If enough surface area is restricted by damage a repair may not be possible.

Jun 25, 2012 | Air Conditioners

1 Answer

My ac unit will come on for a minute then turn off for a minute, it keeps repeating this action. What is the problem?

Check the refrigerant pressures. it may be turning off from low or high pressure limits with automatic resets. If you have a digital thermostat, there is a programming function in the installation instructions for setting the AC cycles per hour. If the AC is oversized, it will short cycle.

May 20, 2012 | Bryant Air Conditioners

1 Answer

I have a Lennox model CB19-51-1P air handling unit with HP19-511-1P compressor heat pump unit. I just turned the heat on for the first time this season. And I am getting low heat volume. The heat pump...

first thing you need to check is if the reversing valve is working you maybe running your A/C with the heat strips on depends on the t-stat your using some heat pumps will bring the strips on with a high degree difference in setting and room temp .

1- turn t-stat to heat set temp 10 degrees above room temp if you have a programable t-stat it will have a time delay on it allow to for the outdoor unit to come on 2 to 5 minute usually .
2- walk around to the outdoor unit when it comes on feel the big line the insulated one and see if it is hot or cold let it run for a 5 minutes peel back the insulation and gently grab the line with your hand it maybe real hot so be careful if this line is hot then your heat pumps is working mechanically and if it is just warm then you may need the charge topped off

there are so many different option's from this point i will need to know the findings of this test first thanks : Michael

Nov 16, 2010 | Air Conditioners

1 Answer

Room a/c works great for hours and then compressor just stops

the unit may be knocking off on defrost if the coil is getting v cold,

check for full airflow over the indoor unit/evaporator coil, check filters fan operation and coil condition. Likewise it may be overheating so check the same on the outdoor unit/condenser clean coil and fan operation.

Unlikely but the unit may be under performing and slightly short on refrigerant, not providing enough suction cooling to the compressor motor so the internal over temp klixon would cut it off for short periods, to cool the motor.

Jul 05, 2010 | Samsung AW1203B Air Conditioner

1 Answer

Rudd Heat pump shuts down. Compressor is on and goes out on

Is your condensor coil clean?Needs air to breath.

Feb 12, 2010 | Ruud UBHC Air Conditioner

1 Answer

Defrost cycles needlessly for extended time period

Without knowing what the problem was with the old board, you're not going to be able to figure much out, I don't think.

Did you check that temperature sensor I mentioned? You will have to pull the top off to get access to it. Normally found connected to one of the tubes for the coil, silver in color, with 2 wires connected to it, near the bottom of the base of the unit.

Dec 13, 2009 | Air Conditioners

1 Answer

How can I determine if the ac is removing the correct amount of moisture from the air?

tech answer is:3 pints of water per hour per 1 ton of cooling.
General rule of thumb is 20-25% of the capacity of the unit is devoted to dehumidifying.
If unit runs constantly and the temp really does not seem to be effected, unit is probably too small. If unit runs and cycles off frequently, i.e. short run times, and humidity is high, unit is too big.

Hope this helps

Jun 25, 2009 | Air Conditioners

1 Answer

AC is off but compressor cycles periodically

most likely your compressor contact is stuck closed, and will need to be replaced. if the fan also runs when the compressor comes on you may have a short between the t-stat and unit. hope this helps.

Jun 14, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

My Ruud Achiever outside compressor is stating and stopping. The fan turns normally for 3-4 seconds and then it cycles over and over. The unit is 5-6 years old. How do I diagnose this before calling in the...

your unit sounds like it is short cycling on low pressure. find the cylindrical thing on the larger line in the will have two low voltage wires coming out of it. trace those two wires back to where they go and turn off the unit so you can install a jumper across them. turn on the unit and see if it keeps short cycling or if it is running more normal. if it runs more normal then you are most likely low on freon or a slight chance of an airflow restriction

Sep 21, 2008 | Ruud Air Conditioners

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