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All of a sudden having low voltage issues

Sergio88
Community Member

Bought and installed months ago and everything worked fine. Lately the thermostat has been shutting off due to low battery. So I take it off and charge it via USB and then plug it back on and everything works fine for a couple of hours then i have to repeat the process. I have checked the wiring and checked the breakers,  and everything is the way its supposed  to. The help center says the voltage has to be between 3.8 to 3.6 otherwise is shuts off, after months of working fine. How can I fix this issue. 

 

 

I have submitted a ticket for it but representative just ask the same question and doesn't do anything just wait. 

11 REPLIES 11

Houptee
Silver Product Expert
Silver Product Expert

Do you have it wired to with a C common wire? It needs a common to keep battery charged up.

Also you can go into the settings and see the voltage displayed.

Take pics of the wiring on the base you have now.


Houptee -- NJ Master HVAC Licensed Contractor

Sergio88
Community Member

No I don't believe is has a c wire. I have it wired just like it said in the app and it worked perfectly fine for months never had an issue. 

20221005_202420.jpg

Houptee
Silver Product Expert
Silver Product Expert

Is this a heating system and A/C?

I see you have the OB wire which is usually only for heat pump systems.

Is there one more wire tucked in the wall not being used in the cable probably a blue wire?

If you have extra wire you can use it as the C common and connect it on the system terminal strip to C screw then that will most likely resolve the power issues.

Take a pic of the wires connected at the system end to make sure you have a C terminal screw.

 


Houptee -- NJ Master HVAC Licensed Contractor

Sergio88
Community Member

Yes it's a ac and heater. No other wire was there when this was installed. When the last thermostat was removed these were the same wires that were used.

Houptee
Silver Product Expert
Silver Product Expert

You need to connect a C wire to solve the problem.


Houptee -- NJ Master HVAC Licensed Contractor

Sergio88
Community Member

Sorry for the delay response I was unable to log back in. How to I connect a c wire ? Hopefully not too complicated 

Houptee
Silver Product Expert
Silver Product Expert

Take pic of the thermostat wires on the heating system end showing the terminals.

We need to see if you have a C terminal on the unit.


Houptee -- NJ Master HVAC Licensed Contractor

Jeran
Community Specialist
Community Specialist

Hey there Sergio88,

I'm just checking up on this thread, do you have any more questions or need any additional help? 

Thank you for helping out on this thread, Houptee!

Best regards,
Jeran
 

Sergio88
Community Member

No, I had the c wire installed by a professional and it fixed the issue temporarily. But, now the thermostat doesn't turn on anymore I had it Uninstalled because it's not worth the hassle anymore.

Jeran
Community Specialist
Community Specialist

Hey there Sergio88,

 

I'm really sorry to hear that. Did you still want the forum to help you out with your thermostat, or did you have any other questions?

 

Best regards,

Jeran

Jeran
Community Specialist
Community Specialist

Hey Sergio88,

Do you have any more questions that we can address? If not, I'll go ahead and lock up this thread in 24 hours.

Just checking up,
Jeran