Tip & How-To about Kitchen Ranges

Air Conditioning Perth: 3 Possible Problems With Thermostats

Many people consider their thermostats as simply a display or control surface for their air conditioning systems. The perception is that the thermostat is not the most complex part of the system and not much can go wrong with it. In fact, this is not true; a thermostat is a primary method that most of us will use to communicate our needs to our air conditioning and they can develop problems. If our thermostat is not running correctly, we can experience sub par cooling, system shutdowns, and false temperature reading. Here are three of the most common problems that people encounter with their thermostats.

1. The Thermostat is Located in Direct Sunlight:

When fitting air conditioning, Perth professionals will never place a thermostat in direct sunlight. Although easy access is important, the placement must avoid direct sunlight wherever possible. The reason for this is that the thermostat will become heated up during the day and this will send a false reading to your air conditioning system. There will effectively be a call for excessive cooling that will make your home uncomfortably cold. This will also make your system work harder for no reason and drain more energy leading to higher bills.

2. Placing the Thermostat Next to Air Conditioning Vents

Locating a thermostat next to an air conditioning vent is a very bad idea. This is the inverse of the situation we have already discussed above. Essentially, the thermostat will be cooled by a nearby air conditioning vent, and it will read a temperature that is not an accurate reflection of what is happening in the home. The system may begin to act as if the home is colder than it actually is and it will then deliver less cooling. The system will begin to cycle off and on unnecessarily, which will also lead to more strain on the system and result in higher energy bills.

3. The Thermostat is Dirty

Like any household surface, a thermostat can become covered in dust and dirt if it is not cleaned regularly. Any kind of dust is bad for a sensitive electronic piece of equipment causing malfunctions and failure. This is easy to correct by cleaning the unit, but if this fails to correct the problem a professional may have to replace the thermostat entirely.

If they are looking for air conditioning, Perth, Wa residents should contact us here at Gas & Air. We are your local specialist for supplying, installing and servicing both domestic and commercial air conditioning systems. We take pride in the high quality service and standard of work that we provide at an affordable price. Get in touch with us, and we would be happy to discuss your needs in more detail.

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3 Answers

My Goodman heat pump doesn't blow air through the vents into the house, but the fan comes on when the thermostat is turn on for the air conditioning


Check first that
  • the air conditioning equipment is turned on,
  • the thermostat is calling for cooling, and that
  • the blower unit or air handler is actually blowing air through the ductwork.
Here are the details of what to check in what order if your air condtioner or heat pump doesn't start at all when you set the room thermostat to call for cooling:
  1. Check the Room Thermostat Temperature Setting: Set the thermostat to at least 5 degrees below room temperature. Our elderly mom has no patience with switches and controls. She regularly calls her air conditioning service company with a service request, sometimes late at night, because she has simply failed to set the temperature on the thermostat lower than the room temperature. Don't drive your A/C like our mother.
  2. Check that the Room Thermostat is set to "Cool" not "Off" or "Heat". If the thermostat is not set to "cool" it is simply turning off your A/C. If the thermostat display is blank then it's not receiving power (for modern digital thermostats). Check that electrical power is on at the air handler and to the the low-voltage transformer that supplies power to the thermostat.

    If the thermostat has power, check that when you set the thermostat temperature down at least 5 degrees below room temperature the thermostat calls for cooling. If it doesn't then check for broken or shorted thermostat wires anywhere between the wall thermostat and the control board at the air handler.

    You can easily eliminate possible thermostat problems as a cause of failure of the air conditioner to start by simply eliminating the thermostat from the picture: disconnect the thermostat wires at the blower unit's control board and instead connect the two thermostat terminals directly together with a jumper wire. If the system starts then the problem is in the thermostat itself or in its wiring.

    If the thermostat is working but the compressor condenser unit won't start, you could skip ahead
    to COMPRESSOR / CONDENSER DIAGNOSTICS but I wish you'd double check the remaining steps in this article first because there are some sneaky snafus listed below that might still be the problem.

  3. Check that electricity is on for the equipment. Check all of the electrical switches and controls that can turn electrical power off at the indoor air handler or at the outdoor compressor/condenser unit. There are more of these switches than you might guess. Here's a list of what to check:

    Electrical power switches and service switches outside by the compressor, inside at the air handler, and fuses or circuit breakers in the electrical panel. Don't forget to check that the access covers to the equipment are properly closed and latched. Otherwise a
    BLOWER DOOR SAFETY SWITCH could be keeping the equipment from running.

    There are several other safety switches and controls, both manual and automatic that can leave an air conditioner or heat pump turned "off" such as a blower compartment door interlock safety switch, an electric motor overload or overheat switches, and a condensate tray spillage detector switch.

    Some hard-to-find electrical switches on an air conditioner or heat pump could be keeping your air conditioner from starting, such as
    a FLOAT SWITCH on Condensate Tray that could
    be
    causing CONDENSATE PAN SWITCH LOCKOUT - condensate spilling into an overflow pan that uses a sensor switch can be enough to shut down your air conditioner.
    or
    a blower MOTOR OVERLOAD RESET SWITCH could be keeping a fan motor from starting.

    A bad or failed starter capacitor could also be leaving your system shut down, failing to start a blower, fan, or compressor motor.
    See CAPACITORS for HARD STARTING MOTORS

    Watch out: See A/C - HEAT PUMP CONTROLS & SWITCHES to be sure you have found and checked everymanual or automatic electrical switch on the system.
  4. Check the electrical supply voltage. Even if electricity is on, if the supply voltage has fallen too far below the operating voltage range of your air conditioner it's likely that the system will not operate, particlarly, you may note that the compressor motor won't start.
    See VOLTS MEASUREMENT METHODS

Aug 22, 2017 | Goodman Heating & Cooling

2 Answers

thermostat set at 73degrees , turns on and off to frequently


Hello Jean Thomson,

There are several reasons air-conditioning could go on & off frequently.

Thermostats can be set with close degree function...

Assuming your temperature variances are of no importance
the THERMOSTAT can be adjusted to be less sensitive...

BUT BY FAR... the most common reason for rapid cycling
of the A/C are air leaks and poor insulation...

Your local UTILITY provider will likely have FREE (or very reasonable) thermal analysis - evaluation programs... wit supported contractor services to improve your INSULATION and reduce ENERGY CONSUMPTION.

Also you might need to consider that your A/C system is simply poorly engineered to keep your home at a comfortable temperature...

Again... there are SPECIALISTS who are capable of analyzing your existing structure... and recommending appropriate systems sizing to economically operate efficiently....

Nothing here for the uninformed noviciate... all highly technical.

Save money... Get a PROFESSIONAL ANALYSIS..

Hope this helps!!
Carnac the Magnificent

Jan 02, 2017 | Heating & Cooling

1 Answer

i have waves split air condition its cooling is good but some time in the display e4 is coming and that time my ac is not giving cold air what is this.tell me some one.


Hello,

The e4 that displays on your air condition come up simply because there is an error during the operation of the system. E4 means Error 4 which is a code that is interpreted as low pressure switch.

E4 simply means there is low pressure switch, the pressure switch turns on automatically inside the air condition, so when you turn it on sometimes the switch jams and does not open so the air condition will be on but would not get cold because the switch jammed and it displays an error signal to let you know there is a problem in the system.

Take care

Jul 09, 2010 | Heating & Cooling

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