Thermostat or what??????
#1
05-06-03, 04:36 PM
Thermostat or what??????
Help me please
, I have a Lennox AC System in a single family home with an heat pump in the attic. My A/C was working one day and the next it was not 
. It seems that I have no power going to the thermostat control. I had the kill switch fuses on the outside unit tested and they were still good. So I'm at a delimma that I'm thinking it could be the thermostat. If the thermostat fails, would I have power to turn on just the fan or either heat or cool mode?
, I have a Lennox AC System in a single family home with an heat pump in the attic. My A/C was working one day and the next it was not 
. It seems that I have no power going to the thermostat control. I had the kill switch fuses on the outside unit tested and they were still good. So I'm at a delimma that I'm thinking it could be the thermostat. If the thermostat fails, would I have power to turn on just the fan or either heat or cool mode?
#2
05-06-03, 06:28 PM
Super Moderator
More info or what!!!!!
yonartech:
You are there and I am here.
If you want assistance we need much more to go on.
How do you know you have power at the stat and how much power.
Read this: http://forum.doityourself.com/showth...hreadid=122673
You are there and I am here.
If you want assistance we need much more to go on.
How do you know you have power at the stat and how much power.
Read this: http://forum.doityourself.com/showth...hreadid=122673
#3
05-06-03, 07:37 PM
If the thermostat is completely dead then most likely your problem lies in the air handling unit which contains the transformer which supplies power to the thermostat.
Go into attic and see if air handler has power...if you dont know how to check for power you can check the circuit breaker in your breaker box first.... if breaker is ok you can sometimes put your ear against the air handler and if it has power to the transformer you will hear the unit humming.......
The air handler may also have a drain pan under it to catch any leaking water from the evap coil...sometimes the drain pan will have a little float switch in it which will shut off the unit if the pan gets water in it.
After that...if you are not familiar with electricity you will need to call someone....
Go into attic and see if air handler has power...if you dont know how to check for power you can check the circuit breaker in your breaker box first.... if breaker is ok you can sometimes put your ear against the air handler and if it has power to the transformer you will hear the unit humming.......
The air handler may also have a drain pan under it to catch any leaking water from the evap coil...sometimes the drain pan will have a little float switch in it which will shut off the unit if the pan gets water in it.
After that...if you are not familiar with electricity you will need to call someone....
#5
05-28-03, 05:00 PM
Originally posted by tammi ann
If the thermostat is completely dead then most likely your problem lies in the air handling unit which contains the transformer which supplies power to the thermostat.
Go into attic and see if air handler has power...if you dont know how to check for power you can check the circuit breaker in your breaker box first.... if breaker is ok you can sometimes put your ear against the air handler and if it has power to the transformer you will hear the unit humming.......
The air handler may also have a drain pan under it to catch any leaking water from the evap coil...sometimes the drain pan will have a little float switch in it which will shut off the unit if the pan gets water in it.
After that...if you are not familiar with electricity you will need to call someone....
If the thermostat is completely dead then most likely your problem lies in the air handling unit which contains the transformer which supplies power to the thermostat.
Go into attic and see if air handler has power...if you dont know how to check for power you can check the circuit breaker in your breaker box first.... if breaker is ok you can sometimes put your ear against the air handler and if it has power to the transformer you will hear the unit humming.......
The air handler may also have a drain pan under it to catch any leaking water from the evap coil...sometimes the drain pan will have a little float switch in it which will shut off the unit if the pan gets water in it.
After that...if you are not familiar with electricity you will need to call someone....
#6
05-31-03, 12:10 PM
Super Moderator
yonartech:
Not sure if you have the problem fixed now or not. You will need a multi-meter and the ability to use it properly to troubleshoot your system.
kitamura:
The same applies to you. If you can say that everything is fine then that would mean you should be able to troubleshoot electrical components and should be able to check the " circuit breaker box portion ".
We can only give y'all a clue as to where to look and expect posters to have some basic safety and electrical knowlege before poking around electricity.
Not sure if you have the problem fixed now or not. You will need a multi-meter and the ability to use it properly to troubleshoot your system.
kitamura:
The same applies to you. If you can say that everything is fine then that would mean you should be able to troubleshoot electrical components and should be able to check the " circuit breaker box portion ".
We can only give y'all a clue as to where to look and expect posters to have some basic safety and electrical knowlege before poking around electricity.
