thermostat istallation / power

[rickpea]

Installing a nest learning thermostat:  This is the 4th different thermostat attempt

                                                                        3 different- 3rd generations , could not get the battery reading above 3.1v

                                                                       4th- learning thermostat- battery level 3.8v

                                                                        had a c wire installed reading 25v at the t stat.

                                                                       "hardwire" the r & w wires without the tstat -boiler , heat works fine

                                                                        all connections and wifi are  are reading properly.

                                                                        have 2 more zones in home with nest t stats,work fine 2+ years

                                                                        have reset app tstat and router with no luck

                                                                       all four tstats will call for heat-cut out repeatedly

Baffling, any similar situations?

[Markjosephp]

Hello rickpea,

Thank you for taking the time to let us know about your inquiry. I'd be happy to take a look into this for you.

To isolate:

• Are all your Nest Thermostats the same version?
• Do they have C wires connected?
• Did the issue occur after installing a C wire?
• Please gather the power readouts on your thermostat's Technical Info settings.
• Check if there are wiring reports under the Equipment settings.

I'll look forward to your response.

Regards,

Mark

[rickpea]

 I have the 3rd gen. on one  zone , E thermostat on another zone , approx 2 years , both operate fine. The 3rd gen has a c wire connected. The E tstat has no c wire. The 3rd zone , the one I am having trouble with , recently had a c wire installed .Cuts out intermittently with and without the c wire. (learning 3rd gen).

The wiring report shows the proper connection.

3.907 v

voc 30.24

vin 30.24

lin 200 ma (c)

the original honeywell works

"(hardwire)"  the r & w boiler works.

Any ideas?

Thanks much

RICPEA

[Markjosephp]

Hi there,

Thanks for letting me know. Possible that the common wire may not be properly grounded, so the system uses power sharing but still doesn’t get enough energy. Additional questions: are you getting any wiring reports or message codes? Also, could you please share with us a photo of your zone panel showing how you installed the C wire?

Regards,

Mark

[Markjosephp]

Hello rickpea,

I wanted to see if you still needed help. Please let us know if you have any other questions or concerns.

Thanks,

Mark

[rickpea]

thank you for your attention to this . zone 2 is the problem.

rick pea

[Markjosephp]

Hi there,

I'm sorry for the late reply, but the picture attached seems to be broken. Could you share another photo with us? Also, please let us know if you have any other questions or concerns.

Regards,

Mark

[Markjosephp]

Hello there,

I'm checking back in — how's it going? Still need our help? Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further.

Regards,

Mark

[EmersonB]

Hi everyone,

@rickpea just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, we would be happy to keep it open. If there's more we can do, just let us know.

I appreciate the help, Mark.

Best,

Emerson

[rickpea]

to Google

 I have the 3rd gen. on one  zone , E thermostat on another zone , approx 2 years , both operate fine. The 3rd gen has a c wire connected. The E tstat has no c wire. The 3rd zone , the one I am having trouble with , recently had a c wire installed .Cuts out intermittently with and without the c wire. (learning 3rd gen).

The wiring report shows the proper connection.

3.907 v

voc 30.24

vin 30.24

lin 200 ma (c)

the original honeywell works

"(hardwire)"  the r & w boiler works.

Any ideas?

Thanks much

RICPEA