Question about Amana PTH123B25AJ Heat Pump Air Conditioner

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Heat pump works in emergency heat, but not in auxiliary heat

When I turn the thermostat on for aux. heat, the flame symbol justs blinks. and it does not show an arrow at aux. heat. If I put in on in emergency heat. the flame symbol stay son and an arrow points to emer. heat.

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I set the thermostat for 70 degrees. It comes on always in auxillary heat and does not shut off when it reaches 70 degrees. It is a heat pump, I am assuming, it might be the thermostat? But when the air conditioner is on, it turns off when it reaches it's temperature.

Posted on Oct 16, 2009

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It soundslike your main board is bad.we went thgough the same thing with our furnace which is an amana and it cost us 600 to have it repaired.ours sounds like the same setup as yours is

Posted on Jan 20, 2009

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Posted on Jan 02, 2017

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1 Answer

WHAT DOES IT MEAN WHEN HEAT IS SET 66 AUX IS FLASHING


If it is a heat pump if the ambient I door temp is not than 3 degree s lower than 66 it utilizes the aux heat ( heat strips) to help the unit achieve your desired temperature set point faster. Also the heat pump does need help if trying to overcome really cold temperatures. Once set point is achieved the heat pump should be able to keep the home at the set point without aux heat. But the flashing may just be to let you know that the heat strips are in use at the current time. See if when the temperature gets close to your set temp if it goes away. If not a heat pump it may always flash to just tell you heat strips are in use. Some homes mostly trailers only have heat strips but on heat pumps heat strips are there to help heat pump get to your desired temp. But when your heat pump can maintain the temp without the strips is where it saves power. Also heat pump thermostat hVe emergency heat settings. This scares alot of people but if your heat pump isn't working and you have to switch it to emergency heat until you can get it fixed,. That means that the system is only using heat strips and not utilizing heat pump at all. Power bill may be a little higher but remember, most trailer homes only have heat strips and if you do not use emergency heat in this situation your heat strips will only heat home 3 degrees below set point on thermostat to allow heat pump to bring it up the other 3 degrees. If heat pump isn't working correctly you will always be 3 degrees colder than what you set you thermostat at. Maybe too much info but it's prolly just your aux heat on helping system achieve the desired temp you set thermostat too.

Oct 24, 2016 | Heating & Cooling

1 Answer

I have a thermostat RTH9580. Why do I have emergency heat under system AND heat which sometines switch automatically to auxilliary heat?


If you have an air to air heat pump, in colder temperatures, the heat pump will not heat as well as it would in warmer outdoor temperatures making it run longer. the digital thermostats work off of a built in algorithm that kicks on the auxiliary heat when the heat pump runs to long so that it will satisfy the thermostat quicker. This can be tied to the Emergency heat @ the thermostat energizing a few heating elements, or just energizing a separate element from the emergency heat. I always recommend on an air to air heat pump to run the emergency heat when you have consistent Outdoor temperatures below 20 degrees F because you will cycle the heat less by getting hotter heat making life more comfortable, and it costs about the same as running the heat pump since @ those temperatures, it will run all the time.

Jan 09, 2015 | Honeywell 7 Day Touch Screen Programmable...

1 Answer

My thermostat has both auxillary and emergency light on,both are green,what does that mean?


Aux light; This turns on when the auxiliary (second stage) heating is in operation
It turns on 1-6 F below first stage and is user adjustable

Emergency light; This light turns on whenever the emergency heat is manually selected
(Mode switch is in the EMER position)
While in the emergency Heat mode, the heat pump compressor is off,
and the emergency heat (same as the auxiliary heat) maintains the
set point temperature

Jan 22, 2014 | Computers & Internet

1 Answer

Aux keeps coming on on regular heat is there something wrong with heat


See if it happens only when your temperature of the room is more than 3 degrees of your setpoint temperature. Since you have a heat pump, the auxiliary (electric heat strips) is use for backup of the heat pump when it can't keep up. The heat pump will run by itself if it can maintain temperature within a couple degrees. If it is too cold outside to handle the load or you set the temperature more than 2 degrees past room temperature, the auxiliary will turn on. The thermostat has a memory of how long it takes to reach desired temperature. If it goes into auxiliary mode trying to satisfy setpoint during the last call for heat, it will start the next call for heat in both aux & heat pump mode until the thermostats algorithm (timed program) allows only the heat pump to run. Not sure if you have an air to air, or geothermal heat pump. The outside air temperature will affect only the air to air system ie. when the temps drop outside, the heat coming out of your vents will be cooler...the air to air systems drops efficiency when the outdoor air drops.

Nov 08, 2013 | Honeywell TH3210D1004 PRO 3000...

1 Answer

What does the "auxillary heat"


Auxiliary Heat is used to turn the electric heat strips ON, If the heat pump is not working. Or if the heat pump can't bring the space temperature up to Set Temperature it will display Aux Heat ON....... Assuming you have a Heat Pump System with Auxiliary Electric Heat as Back up...... If the tech didn't install a jumper wire from AUX to W on the subase which is in back of the Display on the Thermostat.....you won't get Auxiliary Heat if the Thermostat is set for Auxiliary Heat. Other wise the thermostat will turn the heat pump on first and then the electric heat (Aux Heat) if it needs it to satisfy the set temperature....... Hope this helps

Apr 21, 2011 | Honeywell Electronic Programmable...

1 Answer

I understand the heat pump is only efficient when outside temps are above about 32 degrees. If temps are lower, what do I need to do to switch from heat pump source?


If you have electric auxiliary heat strips you do nothing. The system brings on the heat strips as needed.
If you have gas or fuel oil the system brings that on as needed also.
If you switch to Emergency(AUX) heat you will eliminate the heat pump. Not a good idea if you have electric backup heat.

Jan 05, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

I only have two settings. Which is which and how so?


I think you probably have a heat pump. Aux heat is electrical resistance heat coils that produce heat when the heat pump can not produce enough to keep the temperature up (caused by low outside temperature or a problem with the refrigerant system). This resistance heat can be switched on by the emerg. heat button. It also can come on automaticlly (sp) and will be indicated by the aux being shown on the thermostat. Sometime if you set the heat up several degrees by thermostat the aux will come on to help the system catch up to the desired temperature setting. The emerg. heat is a way to turn on the AUX manually. If you do not have a heat pump system then it is possible that you have a heat pump thermostat installed on a non heat pump system. Emergency heat and Aux are both the secondary.

Hope this makes sense1

Bob

Oct 17, 2009 | Ruud Central System Air Conditioner

4 Answers

Abbreviation definitions.


Economy Mode = EM
Auxelary Mode = AUX
in em mode heat pump does most of the work in aux either an electric heating element is used or gas depending on if it is gas or all electric

Oct 16, 2009 | Ruud Central System Air Conditioner

5 Answers

What's the difference between EM HEAT and AUX HEAT?


Sorry, neither of these answers are completely correct.
You have a heat pump (or the wrong thermostat). Let's assume you have a heat pump.

In air conditioning mode, it works like every air conditioner you have ever had, but...

In heat mode, it reverses its operation. Have you ever felt the air coming out of the outdoor unit of your A/C unit? It's hot, isn't it. And the air coming out of the indoor unit (out of the registers) is cold. Now for a heat pump to produce heat it simply runs the air conditioner in reverse and the heat comes out in the house and the cold is released outside. Neat, huh!

Here's the problem with heat pumps...when it is really cold outside the heat pump can't produce enough heat to heat your home. So it has an additional heat source called "Auxiliary Heat". This heat comes on automatically when the house doesn't get warm enough. The source of this heat is based on the region of the country you are in. North/Northeast generally have oil heat, other regions have gas, and still others have to use electricity to heat. In Texas, we usually use electricity as the supplementary heat on heat pumps. VERY EXPENSIVE!

Now the "Emergency Heat"...this is exactly as stated in Solution #2. This is manually turned on by YOU at the thermostat when your heat pump fails. This turns on the auxilliary heaters and turns off the heat pump (remember, the reverse air conditioner). Again, this can be quite expensive to run if your heat source uses electricity! Gas and oil may be cheaper. The emergency heat is only designed (normally) to keep the house livable (not comfortable) until the Heating Tech can get out to you and fix your heat pump.

Something else you should know. It is normal for a heat pump's outdoor coil to frost up during heating mode. It will detect this and go into DEFROST mode and melt the frost off the coil. While it is doing this, it will turn on the auxilliary heater to keep the air blowing in the house at a reasonable "warm" temperature, but it will not be as hot as normal. In fact, heat pumps produce a lower temperature heat than traditional heaters. So the air may feel cooler during heating than you are use to anyway. This is normal and is not a sign of a problem.

So what do you do: Set your thermostat to the temperature you want and set the controls for HEAT/COOL and FAN-AUTO/ON and leave the EMERG HEAT off unless your heat pump breaks.

As always, keep your filters clean and your outdoor unit's coils clean and free of debris.

Hope this explains your question for you!

Oct 16, 2009 | Ruud Central System Air Conditioner

2 Answers

Hi- Can not tell if my unites are straight cool / heat or a heat pump.


if you look inside the condenser unit outside,see if you see the big reversing valve,if not it is a straight cool,heat, the heat strip ins in the air handler so you would have to take the side panel off and look for the heat stripe,my the way heat pumps also have a aux.heat stripe just in case it does not get cold enough outside,hope this helps you-mike

Oct 25, 2008 | Carrier 38CKC042 Air Conditioner

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