HVAC
Explore All Categories
I changed the battery in the honeywell unit due to low battery. Now the system wont turn on. I am getting only three
Contractor's Assistant chat
Customer: I changed the battery in the honeywell unit due to low battery. Now the system wont turn on. I am getting only three volts up to the thermostat base W R-RC (jumper). Red black twisted on W. Green yellow twisted on R. Using a mutlimeter i testd the wiring coming out of the wall on the base and only get three volts.
Contractor's Assistant: I'm sorry to hear that you're experiencing issues with your HVAC system after changing the battery, but I'm confident that the HVAC Technician will be able to help you troubleshoot and resolve this problem. Have you checked the circuit breaker for the HVAC system to ensure it hasn't tripped?
Customer: yes
Contractor's Assistant: Is there power coming into the thermostat base from the HVAC system?
Customer: only seeing three volts. Basic honeywell weekday/weekend tstat powered by AAAs
Contractor's Assistant: Is there anything else the HVAC Technician should know about the system or any other troubleshooting steps you have taken?
Customer: it is a Burnham Alpine 210 unit with a TACO ZVC404-4All other zones work.
Contractor's Assistant: I'm sorry to hear that you're experiencing issues with your HVAC system after changing the battery, but I'm confident that the HVAC Technician will be able to help you troubleshoot and resolve this problem. Have you checked the circuit breaker for the HVAC system to ensure it hasn't tripped?
Customer: yes
Contractor's Assistant: Is there power coming into the thermostat base from the HVAC system?
Customer: only seeing three volts. Basic honeywell weekday/weekend tstat powered by AAAs
Contractor's Assistant: Is there anything else the HVAC Technician should know about the system or any other troubleshooting steps you have taken?
Customer: it is a Burnham Alpine 210 unit with a TACO ZVC404-4All other zones work.
Answered by RobHVAC in 5 mins 1 year ago
HVAC Expert and Instructor/ Stationary and Refrigeration Engineering Licenses
5,964 satisfied customers
Specialities include: HVAC
Read more
Explore JustAnswer's Encyclopedia for Free!
Instant Access: Get thousands of Expert answers at your fingertips anytime
Guides: Comprehensive DIY and life hack guides to make life a little easier
Always Free: No hidden fees and no subscription necessary
Hello my name is ***** ***** of the HVAC experts here to help you.
Sorry to hear about your issues. Lets see what we can do to find out what the issue is and how it can be resolved.
Please be patient if a reply is delayed since I am assisting multiple customers and it takes time to analyze a question and type a response.
Sorry to hear about your issues. Lets see what we can do to find out what the issue is and how it can be resolved.
Please be patient if a reply is delayed since I am assisting multiple customers and it takes time to analyze a question and type a response.
Discover more answers
Customer
Sounds good.
ok I am review your question and pulling up the manuals for your unit.
Customer
sounds good
Ok so you do not have the C wire connected to your thermostat
Customer
I do not.
So your thermostat is just powered by the batteries
Customer
Sent a photo of connection
Customer
Customer attachment 1/1/2024 7:25:29 PM
Customer
Correct.
ok so when you turn your thermostat up do you see the LED lights on the zone board for the zone?
Customer
None.
Customer
Same with the zone valve. Will not light up. Swapped with another ZV and same thing.
ok got it.
Most likely the thermostat has failed.
We can try to reset it by taking the batteries and putting them in backwards for 30 seconds and then putting them back in correct
Customer
I attempted with new tstat. Same issue.
So lets go to the zone controller
Customer
Copy. On my way.
Customer
Here. Pulling cover off of control box
ok so lets take a jump wire and go from R to W on the zone in question.
Customer
Zone 3 is the one with the issue.
Tell me if the relay click and the lights light up for that zone.
Customer
Getting jump wire.
Customer
Shall I remove the wires in there already?
Nope you can leave them
Customer
Nothing. With them inserted or touching flat head
try the others as well.
Customer
it is working.
Customer
1 is calling currently but works for the others.
ok so that means that the zone board relay for that zone has failed.
And to be sure the led light does not even come on?
Customer
Correct.
ok that means you would need to replace the zone controller
its failed internally
Customer
Ok. We did loose power for about 6 hours a few weeks ago. Could that be the catalyst?
yeah any power surges could have caused this. and or years of use.
Customer
Copy. The system is only 5 years old. Thank you. Will contact heating company.
Sorry to be the bearer of bad news.
Is there anything else I can help you with today?
Customer
No
Ok well try to enjoy the rest of 2024.
Customer
Will attempt to. You as well. Thank you!
Read less
0 Likes
Related Questions
Change the batteries due to low batteries and unable to get back into the safe Sentry Safe. S3517. They are replaced low
AndrewM121 | Contractor
372 Satisfied Customers
How do I change the "low" battery in Honeywell thermostat RTH8500D. It's located on wall end of foyer. I don't recall
airheatman | Furnace, A/C and heat pump specialist.
41,049 Satisfied Customers
Changed batteries after unit turned off and now with new batteries the unit stopped working Honeywell thermostat. I
André R. | Expert
31,534 Satisfied Customers
Thermostat displays low battery. Changed the batteries 3 different new set. Still saying low battery. Magicstar over ten
Tamar D | HVAC/Refrigeration & Appliance Tech
28,279 Satisfied Customers
How it works
Ask for help, 24/7Ask for help, 24/7
Members enjoy round-the-clock access to 12,000+ verified Experts, including doctors, lawyers, tech support, mechanics, vets, home repair pros, more.
Expert will respond in minutesExpert will respond in minutes
After you reach out, we match you with an Expert who specializes in your situation. Talk, text, chat, whichever you prefer.
Save time & moneySave time & money
No scheduling hassles, missing time from work, or expensive consults.
A JustAnswer membership can save you significant time and money each month.
Sarahesq and 87 other home improvement experts are ready to help you.
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
“I had a resolution within 15 minutes”
— Erin, JustAnswer customer
Why you’ll love JustAnswer
12,000+ verified Experts
Multi-Step Expert Quality Process, including license verification and peer reviews.
Every question saves money
Join over 10 million members who save money versus in-person appointments.
Service that’s tailored to you
Discuss your individual situation with an Expert who specializes in your topic, 24/7.
Save valuable time at home
Connect from any device. No driving across town or wasted time in the waiting room.
12,000+ verified Experts
All Experts must pass a rigorous Multi-Step Expert Quality Process, including license verification and peer reviews.
Every question saves you money
Join over 10 million members who save money versus in-person appointments.
Service that’s tailored to you
Discuss your individual situation with an Expert who specializes in your topic, 24/7.
Save valuable time at home
Connect from any device. No driving across town or wasted time in the waiting room.
Highly rated, verified Experts
We pride ourselves in our 8-step verification process including license and credential checks. Vetted by us and rated by customers, like you.
Free expert tips & articles
By Robyn
By Carolyn Hauck
By Jessica Klimczak
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
Web sites like justanswer.com/legal ...leave nothing to chance.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
5,964 satisfied customers