Heat Pumps and Electric Heating - Armstrong AC and Heat Pump + Honeyell Vision Pro 8000

With the above mentioned setup, is it possible to automatically switch to emergency/auxiliary without an outdoor sensor. Last week the outdoor temperature was in the mid-teens Fahrenheit and when I woke up in the morning the heat pump was set to 69* while the temperature inside the house was 61*. I had to manually switch to emergency heat in order to get the temp up to the requested 69*.

If an outdoor sensor is the best option, what brand, where to buy?

Don't see how you can switch over without an OD remote sensor. They're pretty simple and cheap so brand shouldn't matter. Pick one up from your local HVAC parts place.

With the above mentioned setup, is it possible to automatically switch to emergency/auxiliary without an outdoor sensor. Last week the outdoor temperature was in the mid-teens Fahrenheit and when I woke up in the morning the heat pump was set to 69* while the temperature inside the house was 61*. I had to manually switch to emergency heat in order to get the temp up to the requested 69*.

If an outdoor sensor is the best option, what brand, where to buy?

Is your Em/Aux electric or fossil fuel?

Is your Em/Aux electric or fossil fuel?

Em/Aux heat is electric strips.

Sounds like something is not set up right or wired right.

What letters are hooked up at the t-stat?

Give me all the advance settings on the t-stat.

What happens when you set the stat to emergency heat?

Sounds like something is not set up right or wired right.

What letters are hooked up at the t-stat?

Give me all the advance settings on the t-stat.

What happens when you set the stat to emergency heat?

I'll get the wiring later at work now but I can tell you that when I manually switch to em heat the strip come on.

Okay didn't read the original post correctly. That tstat should call on the aux whenever the HP cannot keep up and also during defrost to temper the air. The OD remote sensor is only need for setting a comfort/economic balance point.

Yes, post your wire mappings and also tstat config settings.

Ok... That's odd if the strip did come on if you switched to EM heat.

Will be waiting for your post back tonight.

Ok... That's odd if the strip did come on if you switched to EM heat.

Will be waiting for your post back tonight.

I say the strips came on. A while back I had an HCAV tech come out and he said the strips were operating properly when em hest was turned on.

Am having to work late tonite so prob won't get the wiring diagram or setting up until tomorrow night.

Ok. Here's the wiring and tstat settings:

E - Brown wire
AUX - White wire
R - Red
R + RC joined by jumper
O/B - Orange wire
W - Brown wire
Y - Yellow wire
G - Green wire
C - Blue wire

Tstat Settings

120 - 20
130 - 09
140 - 02
150 - 04
160 - 04
170 - 07
190 - 00
200 - 00
220 - 03
250 - 09
270 - 09
280 - 00
300 - 01
310 - 03
320 - 00
330 - 02
340 - 00
500 - 03
510 - 00
520 - 00
530 - 01
540 - 04
580 - 05
600 - 90
610 - 50
640 - 12
650 - 00
660 - 00
670 - 00
680 - 02
690 - 02
700 - 00
710 - 00

E - Brown wire
W - Brown wire
W? You have two sets of brown wire?

250 and 270 - I'd suggest 3.

280 - 1 (Makes a nice nightlight)

All the codes are set right.

At the air handler, what wires are hooked up?

W? You have two sets of brown wire?

250 and 270 - I'd suggest 3.

280 - 1 (Makes a nice nightlight)

All the codes are set right.

At the air handler, what wires are hooked up?

Whoops, my fault:

E - Brown wire
AUX - White wire
R - Red
R + RC joined by jumper
O/B - Orange wire
Y - Yellow wire
G - Green wire
C - Blue wire

Allright, all looks good.

Have a great day!

Allright, all looks good.

Have a great day!

Ok, so back to my original question along with one other:

I had to manually switch to emergency heat in order to get the temp up to the requested 69*.

If an outdoor sensor is the best option, what brand, where to buy?

As well, the master bedroom which is the furthest room from the air handler in the attic is always either much colder in the winter than the rest of the house or much warmer in the summer.

Should I look into putting a remote tstat in the master bedroom to better regulate the temperature?

Did the stat display "AUX" when the temps was below set point?

If it did, then go to the air handler, and see what wires are hooked up to it. While you are up there, look for the make and model #.

Not having the outdoor sensor should not keep the Aux from coming in.. The outdoor sensor can lock out the Aux heat when it's mild out, and turn off the compressor when it's too cold out.

The model # of the sensor is C7089U. It can be found online, or from your dealer. Are you able to fish new wire from the outdoors to the t-stat?

I forgot about the bedroom.

Are the ducts going to the bedroom wrapped in insulation? Is there insulation in the attic above the bedroom, and how are the windows?

How big is the bedroom?

How many vents, and do you have any return in there?

How's the air flow?

I forgot about the bedroom.

Are the ducts going to the bedroom wrapped in insulation? Is there insulation in the attic above the bedroom, and how are the windows?

How big is the bedroom?

How many vents, and do you have any return in there?

How's the air flow?

The house is only 2 years old. There are two duct in the bedroom. One is the original that is split off the others going to that part of the house along with one dedicated that I had installed after the house was built, both are wrapped. There is insulation above the bedroom. It's about 400 sf with 12 foot ceilings as well as a tray ceiling. I also had a third return installed just outside the bedroom. The windows could probably use some extra caulk as we have some foundation problems. I got someone coming out in the next couple of weeks to check that out. All of the HVAC techs (3) that have looked at it say the flow is fine.

Weird thing is the temp in that bedroom is constantly 5 - 7* higher/lower than the tstat says. That's why I'm asking about a remote tstat in that room.

We are also thinking of totally replacing the system with possibly a gas furnace as the house has gas but they installed an electric heat pump. Are there any systems that are able to zone with only one system?

Good size room there.

Are the supply vents up high?

There's no return in the bedroom itself?

How does the air come out when the door is closed?

You could add a zone damper to your current system, but be best to get a dealer out to see your set up to see if that can be done to your current system..

You could do a remote sensor for the bedroom, but the other part of the house may be warmer/cooler than now.

Good size room there.

Are the supply vents up high?

There's no return in the bedroom itself?

How does the air come out when the door is closed?

You could add a zone damper to your current system, but be best to get a dealer out to see your set up to see if that can be done to your current system..

You could do a remote sensor for the bedroom, but the other part of the house may be warmer/cooler than now.

Supply vents are at the top of the tray. I've tried the close the door to a crack and the air flow seems good. I know that I have had scoops installed but I think your idea of a zone damper is the best.

Should the EM/AUX heat be coming on automatically without an outdoor sensor? OR do I need to get an outdoor sensor so I can set a lockout temp to have the EM/AUX heat come on automatically?

The Aux should be coming on with out the sensor.

As I mention, we need to look at the air handler to see what wires is hooked up to what.. (letters)

The Aux should be coming on with out the sensor.

As I mention, we need to look at the air handler to see what wires is hooked up to what.. (letters)

I will take a look this weekend!