Swamp coolers are great for when you want to stay cool without having to worry about spending extra money on air conditioning units. Also referred to as evaporative coolers, swamp coolers release evaporated water into the air, lowering the overall temperature of the area they are in, to as much as 20 degrees. These types of coolers depend on air circulation and evaporated water to function and make a home or any other space comfortable.
Routine maintenance usually helps keep your unit running, however, sometimes it might run into issues requiring troubleshooting. (Also check: Preventive Maintenance checklist for swamp coolers)
Swamp coolers are much simpler units compared to air conditioners. (Also see comparison post: Swamp cooler Vs Air conditioners) That means only a few particular issues can get in the way of its operation. The problems are predictable and easy to identify – so most of the time, you will know which part to look at when you experience operational issues.
In this article, we will discuss some of the swamp cooler problems and how to handle them so you can troubleshoot them and get your cooler running smoothly again.
If you are unable to troubleshoot any swamp cooler problem, call Kitchen Services, our HVAC cooling experts can handle all your swamp cooler problems efficiently with the availability of technicians day and night in Los Angeles and surrounding areas.
Common Swamp Cooler Problems with Parts
Just like any other machinery, evaporative coolers can also malfunction, either from improper maintenance, or unforeseen events. If you have any idea what components make up a swamp cooler, figuring out the root cause of the malfunction should not be too difficult. Following are the swamp cooler parts most prone to run into issues:
Swamp Cooler Electrical Problems
Two main types of electrical problems can affect swamp coolers. The first type is faulty wiring.
Unexpected power surges can cause a substantial amount of damage to the wiring in your evaporative cooler. When an abnormal amount of electricity flows into your cooler due to faulty wiring, the unit may end up with a blown fuse.
Swamp coolers also act up when they are not receiving sufficient electricity. For such a thing to happen, you may have plugged the cooler into a damaged outlet or one that is not made for the cooler. Whatever it is, the cooler not receiving sufficient electricity can be an issue.
Swamp Cooler Respiratory Problems
If your cooler is not blowing air out hard enough, one issue could be the lack of exhaust. To be able to do its job, an evaporative cooler needs sufficient airflow and circulation. The ducts in the room where the cooler is installed should be able to offer ample exhaust. In case you do not have any ducts installed – the cooler will not blow out air properly and its performance may end up suffering.
In case there is no air blowing out of the cooler at all, there could be an issue with the pump. You can also make extra sure by checking the fuses and brokers to see if they are blown or tripped. In such a case, thermostats can also be considered.
Swamp Cooler not Blowing Cold Air
When your cooler is not blowing out cold air, you can expect three main issues. Swamp coolers require a source of fresh air. If you think indoor air can do the job, you are in the wrong.
The cooling can also be affected when the air in your space is overly humid. Swamp coolers work on evaporative cooling. Water needs heat to turn into water vapor, and that in turn removes heat from the air. When your space is humid, the air already has too much water vapor, and that means the water in the cooler cannot evaporate. That way, it will not blow out cold air.
- If the pads are not soaked enough, the cooler will not be able to produce cold air.
- In case the air your cooler is blowing out is not cool enough, its evaporative pads may have become clogged with debris and scale.
- Also, check if there are clogs in the tubes since such issues can keep the pads from getting wet.
Troubleshooting Swamp Cooler Problems
Your evaporative cooler is supposed to offer you cooling when the weather gets too hot to bear. As we have already established, however, evaporative coolers can run into issues that can prevent them from offering proper cooling.
As we have already mentioned, swamp cooler troubleshooting should not be too hard once you have found out the root cause of the problem. Below are some of the most common problems that can be troubleshot, either by you on your own or a professional.
Troubleshooting Swamp Cooler Motor
Swamp coolers have fewer electronic parts compared to air conditioners. Due to that, you can expect the most common reason for the motor going bad to be a blown fuse. You can troubleshoot this issue by replacing the fuse.
An evaporative cooler’s motor can also go bad if you set the thermostat too high. With faulty thermostats, coolers cannot turn themselves on. If you find that your thermostat has stopped working the only thing you can do is replace it with a new one.
If fuses and thermostats are not an issue, you may have to check the wires connected to the breaker and fuse. If the wires are discolored or seem stiff, the main problem may be the breaker. You can try resetting the breaker first, and if you keep finding yourself having to reset it, you may have to replace the faulty wiring.
A cooler’s belt connects the motor and the fan. If that breaks off the fan stops working. The motor may be running, but the unit is not producing air. For this, you can open up your cooler and try locating the belt and slip it back on in the right position in case it is displaced. A broken belt will be a lot harder to fix since you will have to find a compatible replacement belt and slip that into position.
The most obvious out of these problems has to be a motor failure. If the motor is hot after you turn on the fan for a few minutes and turn it off, a replacement may be needed.
If you are still unable to perform troubleshoots successfully, consult a technician at Kitchen Services to get your motor problem fixed. Kitchen Services is only a phone call away. Call us at (332) 310-2010
Troubleshooting Swamp Cooler Pump
If you discover that your pump cooler is dead, you can try confirming that by making sure there is water present at the base of your cooler.
Check whether the pump is getting power as some pumps are designed to plug directing into a standard outlet, while others are wired inside a box present in the cooler. If the pump is not getting power, examine the circuit breaker or even the ground fault circuit interrupter.
The intake screen on the pump must be clear of any debris. Very often, sediment and scale tend to build up, blocking water flow to the pump.
If a pump replacement is needed, begin by turning off the power (since you do not want to get shocked). You will find the pump at the bottom of the swamp cooler.
If you are still unable to perform troubleshoots successfully, consult a technician at Kitchen Services for swamp cooler repair.
Swamp Cooler Motor Hums but Won’t Start
If the motor of the cooler hums but refuses to run at startup, the motor is most likely defective, or its windings are open. You should make sure that the motor is getting enough electricity to be able to start up. If any unit does not receive sufficient voltage for a while, it may heat up. You can check the power plug using a voltmeter to find out if there are any issues with the voltage consumption.
Very often, faulty wiring also stops the cooler motor from starting up properly. Locate the wires leading to the broker and fuse. If the wires appear corroded, your cooler may have defective cabling. Look at the black areas surrounding the location linking the wires to the circuit breaker. You may have to fix the breaker as well as the cable connected to it. The old breaker would have to be replaced.
An injured motor fan may also keep the motor from starting. Test the fan by starting it for a while. Also, consider disabling the connector plug and taking off the panel. Check to see if the motor is hot. If the engine gives off heat, the machine may have to be replaced.
Unless you have technical expertise yourself, this may be difficult for you. Consider consulting a technician at Kitchen Services to get your swamp cooler motor issue fixed.
Swamp Cooler not Blowing Cold Air
If the evaporative cooler fails to blow out cool air, the water system may be the cause. Coolers cannot produce cool air if their pads are not thoroughly soaked. Touch the pads to check if they are still wet. In case the pads are brand new or functioning alright, check the water pump. As for the swamp cooler pump not working, you may need to replace it.
Check the valves to see if they are malfunctioning, or if the tubes are clogged. Such issues stop water from getting to the pads.
Common FAQs About Swamp Cooler Troubleshooting
Why does my swamp cooler smell like fish or a lake?
When swamp coolers smell like this, it means that their water pan has not been replaced in a while. The water grows stagnant when there is no room for evaporation, causing new bacteria to grow. Try draining the water from the pan as well as the reservoir. Clean them using chlorine to keep future smells away.
How can I clean my swamp cooler’s pads?
Remove the pads from the cooler and use a vacuum cleaner to get rid of loose debris. After that, hose the pads off with clean water. Make sure you get both sides.
How often do I have to change swamp cooler pads?
Calcium deposits tend to build up over time on swamp pads. Based on how hard the water you use is, consider cleaning the pads every year and changing them every three to six years.
Why is my swamp cooler blowing out water?
The water may be dripping due to many reasons. Most often, it is due to improper storage of the cooling unit during the winter. Make sure that you store the unit properly. Before winterizing the evaporator cooler, you should drain the unit, remove the pads, and clean the tank.
Why my swamp cooler not blowing hard enough?
If your swamp cooler is not blowing hard enough – or hardly blowing air at all – the swamp cooler pump may not be working properly. Turn off the unit and clean the pump. If this doesn’t resolve the issue, it may be time to replace the pump. Also, make sure to move the cooler close to an open window for optimal airflow.
How to tell if swamp cooler motor is bad?
- Air Isn’t Cool. If outdoor temperatures are in the 70s and low 80s and your swamp cooler isn’t blowing cold air, something’s wrong.
- System Doesn’t Turn On. A swamp cooler that doesn’t work at all could have a failed motor.
- Equipment Is in Bad Condition. If the exterior of your swamp cooler is rusty, the interior probably is too.
Why is my evaporative cooler not cooling?
Evaporative coolers work by adding cool water vapour to the air through evaporation, which helps to cool the air down.
If the air is already very humid (contains a high amount of moisture), it will not be able to absorb much moisture. This can mean that the cooling effect from an evaporative cooler will be reduced.
Why is my evaporative cooler fan not working?
The most common reason the evaporative cooler may not be giving a good air flow is because of the circuit breaker and fuse of the evaporative cooler, which are installed by the manufacturer to prevent damage to the unit. If there is a power surge, you can be sure that the unit will not be damaged.
Why is my evaporative cooler pump not working?
If the pump is not getting power, check the circuit breaker or the ground fault circuit interrupter. You might also check that the intake screen on the pump is clear of debris. The screen may be removable, but usually, it is just a series of slits that encircle the pump’s housing at the bottom.
What is swamp cooler fuse location?
The evaporative cooler has a fuse that is placed near the battery, it is necessary to check it to make sure that it is NOT blown.
