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Troubleshooting HVAC systems on your own

Posted on 19 February 2018 by admin (0)

What do you do if your HVAC system suddenly breaks down at a totally awkward time- for example during a holiday period when most maintenance staff are unavailable? You definitely cannot force them to leave their families and vacations and come running to fix your system. Immediately getting a new HVAC system is definitely a no-brainer considering both the huge cost and the amount of time involved. Your only saving grace in a situation like this is whatever slight knowledge about HVAC systems you have acquired in the past. In this post, we have put together a couple of quick troubleshooting steps you can take to at least have an idea of what exactly is wrong with an HVAC system
Check for power
On many occasions, the problem is that electricity is not being supplied to the equipment. You can confirm this by checking that power sources on the control panel have not been tripped off. Be sure to also check if fuses are not burnt. Electricity bearing cables should be tested for continuity- There might be a kink somewhere in the connection. It is important to take safety precautions here and ensure that main electricity supply to the system is shut off before any attempt is made to check open wires. This is to prevent electric shock and electrocution.
After completing the power check and it has been confirmed that electricity is being supplied to the system. You may then proceed to check the individual components on the HVAC system
Heat
For the heating aspect, an inspection of the furnace will be necessary. Crank up the temperature control to about 10 degrees higher than the average settings. You can then check whether the heat is being supplied at the outlet (Scald Alert! remember not to use your naked palm or the back of your hand to test for heat). If there’s no noticeable heat, you may try resetting the furnace by hitting the reset button on the control panel. Try turning on the system again and if the “no heat” situation persists, then you’ll have to wait for a repair technician. At least you’ve been able to isolate the fault.
Air Conditioning
Turn on the air conditioning unit as usual and similar to the above, set it to a temperature 10 degrees below the average temperature settings. If there’s no noticeable flow of cold air after a minute, you should also heat the reset button. A common problem with air conditioners is the accumulation of dust on the coils. Try cleaning the coils after turning off the AC, replace them and turn it on again. This will help to pinpoint the exact source of the fault.
Ventilators
Ventilating systems often have fans for the circulation of air and also to supplement the action of either the furnace or the air conditioner. The first component to check should be the fan. Also, dirty filters may limit the ventilation aspect of an HVAC system. Air filters should be kept clean as much as possible.  More Info