A broken thermostat can cause several
problems in your HVAC system, including HVAC system breakdown and high
electrical bills. Unfortunately, many homeowners fail to read the signs of a
bad thermostat. In this article, I’ll tell you about the signs of a bad
thermostat and ways to repair it.
Signs of a Broken Thermostat
When you change the temperature in
your HVAC thermostat, your HVAC should react immediately. You’ll start to notice
the change in temperature in your HVAC system. Also, when you turn on your
thermostat, you’ll hear a click sound coming from it. This click sound
indicates that your HVAC thermostat is working perfectly.
If you don’t hear any clicking sound
coming out of your HVAC thermostat or the screen on your HVAC thermostat is
blank, you probably have a bad thermostat. However, make sure that your HVAC
thermostat’s battery isn’t dead. But if the batteries aren’t dead and your
thermostat is still not working, there’s a high chance that your HVAC
thermostat is broken and you’ll have to replace it.
Frequent Temperature Change
One of the biggest benefits of using a
programmable thermostat is that you can set the temperature according to your schedule
and choice. But if you notice that your thermostat is changing temperature
frequently and isn’t following the schedule then your HVAC thermostat may be
broken. However, if your home is zoned then this temperature fluctuation is
alright. But if it isn’t then you’ll have to repair your thermostat.
Your HVAC System Isn’t Turning On
With a functional HVAC thermostat,
you’ll be able to turn on your HVAC system. But when you have a bad thermostat,
your HVAC system won’t start. It can happen because of the electrical wire
problem, or the thermostat itself could be responsible for it. So, how to know
whether you have an electrical problem or a bad thermostat.
To identify the root problem, go to
your home’s main electric panel where the circuit breaker is and check all the
electrical wires of your house connected to your HVAC system. If all the
electrical wires are in good condition and your HVAC system is getting power
from the circuit breaker then go to your HVAC thermostat. Check the settings of
your HVAC thermostat. If you find out that there’s a problem in your HVAC
thermostat settings, fix it with the instruction book's help. But if you don’t
understand what’s the problem in your HVAC system, call an HVAC professional.
HVAC professionals in Dallas are very helpful, and they’ll come to your house
and set the thermostat settings to normal.
If your HVAC system still doesn’t turn
on after making the changes in the HVAC thermostat settings then you have a
broken thermostat. You’ll have to repair your HVAC thermostat to turn on your
When an HVAC system turns on and off
frequently, it is called short cycling. HVAC short-cycling causes serious damage
to your HVAC system. In the beginning, you’ll notice a sharp rise in your
heating and cooling bills. After that, your circuit breaker will start tripping
frequently, your HVAC system will start to overheat, and so on. Eventually,
your HVAC system will breakdown after a few days.
There can be a number of reasons for
HVAC short cycling, including bad thermostat problems. When you have a bad
thermostat, your HVAC thermostat won’t be able to detect the temperature
accurately. As a result, your thermostat will frequently turn on and off your
HVAC system. So, if your HVAC system is turning on and off frequently, there’s
a high chance that you have a bad thermostat, and you may have to replace your
Now, I’ll tell you how to repair your
See the summary of this content here –
Signs of Broken Thermostat [Infographic]
to Repair Your HVAC Thermostat
In most cases, when you have a bad
thermostat, you’ll have to replace it. However, before buying a new HVAC
thermostat, you can do some easy troubleshooting, such as cleaning your HVAC
thermostat, changing the battery of your thermostat, etc.
To clean the dust from your
thermostat, turn off your HVAC system. Then remove the cover of the thermostat
and use a brush to clean it. However, as it as an electrical appliance, you
shouldn’t use water while cleaning the thermostat.
Again, all the electrical appliances
have a certain lifetime, so does your HVAC thermostat. If your HVAC thermostat
is more than 10 years old, it has surpassed its lifetime, and you should just
replace it with a new one.
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