topic Re: Heat is not turning on in Nest Thermostats

Heat is not turning on

Rocandrew — Wed, 03 May 2023 22:19:34 GMT

Testing went great but not it’s not turning on! It’s 64 in my house. No error code showing up. Fuse box is all good. Wiring is all good according to Nest. I don’t know what’s going on. The unit is only electric. I’ll include pics.

Re: Heat is not turning on

CoolingWizard — Wed, 03 May 2023 22:43:26 GMT

Do you have a heat pump type O heat pump and these types of heat pumps energize the O wire to get Cooling. O models are heating units so you don’t energize the reversing valve. Check your settings of your reversing valve and your nest thermostat equipment, submenu and see that you have a O type and not set up as a B type. Additionally, heat pumps usually use auxiliary heat on very cold days so your white wire should be in the W2/AUX terminal of the nest backplate.

AC Cooling Wizard

Re: Heat is not turning on

CoolingWizard — Wed, 03 May 2023 23:00:00 GMT

I was looking at your pictures of your nest back plate and the problem is it doesn’t look like your yellow Y1 wire or your white W1 wire are fully inserted. The copper needs to go in far enough to cause the push tab in the back to stay down. Your yellow wire is not down. neither is your white wire.

Re: Heat is not turning on

Rocandrew — Thu, 04 May 2023 14:04:49 GMT

Thank you! I am not sure if it’s an O type or B type. How can I find that out? I’m in an apartment building so I don’t have access to everything but I think the furnace is in my utility room.

Re: Heat is not turning on

Rocandrew — Thu, 04 May 2023 14:06:27 GMT

I just rechecked me they are down. I pulled them out and put them back in just incase and they’re definitely down. It does look like in the picture that they are not so good eye!

Re: Heat is not turning on

Rocandrew — Thu, 04 May 2023 14:07:47 GMT

On my old thermostat it had a bridge between R and Rc. Do I need that bridge now or is it built in?

Re: Heat is not turning on

CoolingWizard — Thu, 04 May 2023 16:17:24 GMT

With the heat pump, we normally recommend putting the R wire into Rc versus Rh. I’m not sure why, but when you have a heat pump, the compressor is always running. For some reason when we start to see some electrical E type errors, when we move from Rh to Rc we see them go away. It should not be that way, but for some reason it always seems to work.

AC Cooling Wizard

Re: Heat is not turning on

Rocandrew — Sat, 06 May 2023 23:55:41 GMT

How do I find out if I have a heat pump and aux heat?

Re: Heat is not turning on

CoolingWizard — Sun, 07 May 2023 01:50:53 GMT

Go to you outdoor unit and get me the manufacture label showing the Make and Model number. With that look it on my app a verify it.

AC Cooling Wizard

Re: Heat is not turning on

Patrick_Caezza — Sun, 07 May 2023 05:23:40 GMT

@Rocandrew

You have a heat pump. The blue wire is terminated into the O terminal. Never go by the wire colors, as there is no standard.

Re: Heat is not turning on

Rocandrew — Sun, 07 May 2023 16:04:59 GMT

I am not sure where that is. I live in a condo building with 7 other units

Re: Heat is not turning on

zoeuvre — Wed, 17 May 2023 18:45:47 GMT

Hi Rocandrew,

Thanks for reaching out to us. You can find the information of your system through your HVAC unit. Since you live in a condo, you can ask for assistance from their personnel to check further on that.

Thanks for your help, @CoolingWizard and @Patrick_Caezza.

Best,

Zoe

Re: Heat is not turning on

Dan_A — Sat, 20 May 2023 18:49:46 GMT

Hey there,

I wanted to follow up and see if you still need help. Please let me know if you are still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.

Regards,

Dan

Re: Heat is not turning on

Dan_A — Sun, 21 May 2023 18:56:08 GMT

Hello again,

We haven't heard from you in a while so we'll be locking this thread if there is no update within 24 hours. If you need assistance or want to discuss topics, feel free to start a new thread.

Cheers,

Dan

Re: Heat is not turning on

Rocandrew — Sun, 21 May 2023 23:38:14 GMT

I haven’t worked on it again yet because of work and it being hot outside. I will try again here soon. Thank you everyone for your help.

Re: Heat is not turning on

Dan_A — Tue, 23 May 2023 23:54:01 GMT

Hey there Rocandrew,

Sounds like a plan! I’ll keep this thread open and wait for your update. Let me know how it goes.

Kind regards,

Dan

Re: Heat is not turning on

Markjosephp — Sat, 27 May 2023 20:49:05 GMT

Hello Rocandrew,

It's me again. I'm checking back in — how's it going? Still need our help?

Regards,

Mark

Re: Heat is not turning on

Dan_A — Sun, 28 May 2023 22:11:12 GMT

Hello again,

It's been a few days since your last reply — we're going to lock the thread within 24 hours. If you have further concerns, please feel free to create a new post.

Best regards,

Dan