How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask BillyHvac Your Own Question
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22111
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
12672042
Type Your HVAC Question Here...
BillyHvac is online now
A new question is answered every 9 seconds

The thermostat has no display and i'm not even sure how to

Customer Question

the thermostat has no display and i'm not even sure how to open case to check battery
Submitted: 1 year ago.
Category: HVAC
Expert:  BillyHvac replied 1 year ago.
hello,
do you know if your system has a drain safety switch or pan switch?
If the indoor drain gets plugged coming from the ac unit...it trips a switch and turns off power to the thermostat
Customer: replied 1 year ago.
You're speaking a language I don't understand . Where would the indoor drain be in order to check it. The thermostat had no display, now it does and AC is running. Does it have batteries ?
Expert:  BillyHvac replied 1 year ago.
I would need the make model of the thermostat to tell. It could be a slow drain...or weak batteries..IF..this thermostat has batteries...however any that do generally say LO BATT when they are weak.
Do you know where the indoor furnace is?
Customer: replied 1 year ago.
Honeywell T8000C
Don't know anything about indoor furnace
Expert:  BillyHvac replied 1 year ago.
Thank you,
This thermostat does not require batteries.
This means the issue is with the equipment...likely a slow drain.
If you choose to attempt to clear the drain just take pics of your furnace and post and I can direct....But in short...the thermostat is not your issue.
Billy
Customer: replied 1 year ago.
What is a furnace and where do I find? The AC unit is outside. The blower thing is in ceiling.
Expert:  BillyHvac replied 1 year ago.
Then yours in an attic...and it for sure has the safety drain switch so when water backs up it does not damage ceiling.
Customer: replied 1 year ago.
So, I am looking for a drain that I need to clear in the attic? How can I drain be up there ?
Expert:  BillyHvac replied 1 year ago.
The ac drains condensate...then the drain goes to a pump or drain out of the upstairs to outside. All ac units need a drain...
Customer: replied 1 year ago.
So, I'm looking for a drain in the attic not outside near the AC unit ? I'll get a ladder and take look but I'm starting to think I have to call an AC guy. I thought it was the thermostat battery but I guess not. I can't even open the thermostat case to look inside . Based on what u said, I shdn't bother. It's not the thermostat
Expert:  BillyHvac replied 1 year ago.
correct, it is not thermostat.
The number one culprit will be that drain...
I really wish you well and hope you can get it fixed.
Billy
Customer: replied 1 year ago.
Should I take a pic of the drain pan. I found it. I don't know where the drain is .
Customer: replied 1 year ago.
not sure how much time I get for the $24 but on the screen I see "Expert work time left: 10 minutes"
Expert:  BillyHvac replied 1 year ago.
post your pic..there is no additional charge...
Customer: replied 1 year ago.
See fotos attached
Expert:  BillyHvac replied 1 year ago.
nicely done...
The white pipe...at the ac coil part...has an arrow pointing up...where does that pipe end up at?
Customer: replied 1 year ago.
Has little wire coming out top of it but the PVC pipe goes horizontal and eventually outside I guess. On side of house there is a metal cover which I guess houses the PVC pipe but I don't see the end anywhere
Expert:  BillyHvac replied 1 year ago.
you see we want to find the other end and use a shop vacuum to clear it out.
do you ever see water dripping outside when ac is on?
Customer: replied 1 year ago.
No but I don't have a shop vac .
Shd a try getting some of the water out of the pan which is almost full ?
Expert:  BillyHvac replied 1 year ago.
exactly.....a safety has tripped to save your ceiling.
Once you get all the water out and drain clear it will reset on its own.
Basically it is off as a protection against damage.
Billy

Related HVAC Questions