He has filmed and interviewed people living in tiny houses and RVs since 2011. For this, you need a professional to find and seal the leak and refill the Freon. This Dometic split-system-type air conditioner separates air handler/evaporator (left) and condenser/compressor (right). Thankfully, you can troubleshoot your boat’s AC unit on the water so you don’t have to swelter in the heat while others are having a blast. If it does stick, when you want heat, you’ll be left out in the cold. But to perform optimally, the pump must always be in contact with the water. Make sure the condenser coil’s caps are removed and the water strainer and pump are below water level. If you make mistakes with the polarity of live and neutral wires, you can end up frying the whole system and cause extensive damage to the unit and your boat. Turn off all the power from the boat before attempting to troubleshoot electrical components. Clean with a blower if you notice debris or dust buildup. A freezing evaporator can be because the fan is not running efficiently or is damaged. Make sure the pan is not corroded as this can lead to flooding and will need a repair or replacement. The AC will shut off if it doesn’t get water flow to prevent overheating. The refrigerant then flows through the expansion valve to the condenser, where the now very cold refrigerant picks up heat from the seawater and carries it through the compressor to the cabin. A gurgling sound indicates air in the system. These problems usually require replacing the faulty component. He grew up on the coast where his dad took him boating from a young age. We covered this at length in the troubleshooting section. Reassemble in case of misalignment and replace if it has extensive kinks. Because the water flow passing through the strainer is nutrient-rich, critters and small marine life love to lodge in the space. If you live in a place with humid summers and cruise on mosquito-infested waters, a working AC unit is a must. A fan blows warm air from the cabin across the evaporator and discharges it, now cooler, through ducting back into the cabin. Poor or damaged insulation can reduce cooling. Clear brush and debris from outside unit and surrounding area Malfunctioning solenoids can compromise the AC’s function. Increase the thermostat setting to remove ice from the system. But here’s the good news—if your system conks out, getting it going again will often be pretty simple. Sometimes the problem is from a faulty fan relay or capacitor. troubleshooting and maintenance and provide technical support for a wide variety of equipment including: Webasto Blue Heat, Proheat, and Propex Heatsource Marine Forced Air and Hydronic Diesel Heaters Eno, Dickinson, Force10 Manufacturing, Gas Systems, Hillerange, Kenyon, Origo, You can change a burned fuse or tripped circuit breaker, but don’t attempt retrofitting your marine AC unit’s electrical connections except you are qualified. We specialize in repair and installation of marine air conditioning, refrigeration and icemakers. Even if your air-conditioning system is working great, clean the filter once a month. Except you have a background in HVAC systems, there is a limit to what you can with a troublesome marine air conditioner. Valve bypass lever should automatically move to open position The air start system looks rather complicated, but it is quite simple when you examine it without the safeguards. There are also safety systems incorporated such as a bursting disk and numero… If the pump makes a lot of noise, it has something in it. Checking and recharging the system is a job for a licensed air-conditioning technician. The main cause of this issue is restricted airflow and can be corrected by removing the obstruction. Call us about your marine air conditioning needs and we will be happy to help! © 2021 Cruz Bay Publishing Inc., an Active Interest Media company. There are some serious problems that can cause these issues, but typically, when your AC won't turn on, you have about a 70% chance of solving the issue yourself. This problem occurs when the high-pressure switch is triggered while the AC unit is operating in Cool mode. Our partners and staff come from a wide range of backgrounds, which provides our customers with versatility and stability. Dirty and clogged filters make your AC unit inefficient, increasing the system’s workload. Eventually the autumn chill will send you reaching for the heat switch, and when you hit it, you want warm air to flow. Whether you’re looking for expert repair and maintenance, retrofit an existing system, or planning to have a new air conditioning system installed, Oceanworks Marine has you covered. We service Fort Lauderdale, FL, Vero Beach, FL, Tampa, FL, Marco Islands, FL and Key … This unit is someth… Check to see that the fan is running properly. Normal temperatures. ... Industry, We have the education , experience and the Factory Certified Licensing to be the best for all your HVAC-R systems needs. The proper position of the thermostat is the evaporator discharge. 2790 Kurtz , San Diego, CA 92110 The expansion valve regulates passage of high-pressure refrigerant into the evaporator; because it’s under many atmospheres of pressure, the refrigerant is liquid at this point. Dusty evaporator coils are inefficient and will increase the strain on your unit. Remove any blockage and clean the air filter to improve ventilation. Read more about Morten here. As with virtually every other maintenance project onboard, step one of just about any fix will entail finding and reading the owner’s manual: Everything you can do yourself is explained in there; for everything else, call a pro and join mom and the kids at the hotel pool. If required, charge the system with fresh refrigerant. Circuit Breaker Triggers Uncontrollably, 9. Most marine air conditioners have a reverse-cycle mode, which changes the flow of refrigerant and turns the system into a heat pump. In this article, we look at the common issues to check when your vessel’s AC stutters. (Nice vacation, huh?) The evaporator/fan/ducting assembly is called an “air handler.” The warm air that’s pulled in from the cabin is called “return” air, while the “supply” air is the cold air coming out of the air handler. It can also be because of obstruction of the return air. If everything fails, flush the unit with a pressure hose or call a professional if you can’t identify the source of the problem. Marine AC Information. Activation of High-Pressure Switch in Cool Mode. Always disconnect power supply prior to perform installation, servicing or maintenance. Clean the existing duct system or increase the vents for adequate airflow. Inspect the hoses from the sea stock, strainer, pump, to the thru-hull. The entry of large particles, critters and debris can also make the pump noisy. An improperly located thermostat may also have difficulty gauging the actual cabin temperature, leading to this problem. At the end of this piece, you will know the basics to keep your air conditioner in top shape. Sometimes, the noise is because of friction and some lubrication will stop it. (Probably the #1 question we get). Before troubleshooting your marine air conditioner or any other equipment, read and understand the user manual. If the AC pump is missing fins, has melted components, or worn bearings, replace it. This occurs when you are using the thermostat. Check the return air. To check this, disconnect the pump power and start the AC. When this occurs, the evaporator will not dissipate heat effectively. The electrical box and compressor units take up to 25 percent less space compared to those made by our competitors. The evaporator’s duct might be too lengthy or kinked in places, causing a heat build-up that triggers the RESET button. Depending on the brand and model of air conditioner, the following are things to check when you have issues with your boat AC. Check for marine growth, large particles, sea scum, and debris. Most marine FWC thermostats open at 160°F and will be fully open at approximately 180°F. It might be blocked, kinked or misaligned. The compressor works but the fan doesn’t. Air conditioners remove humidity along with heat, and the water has to go somewhere. After trying all the troubleshooting tricks in the book and you can’t resolve the issues with your cooling unit, ask for professional help. Repairs come backed with a one year warranty covering parts and our labor. It makes the evaporator dusty and decreases its heat-dissipating abilities. We hope this article will help keep things cool when it’s blazing hot on deck. Connect the collecting cylinder to the purging line of the condenser, open the valve, and collect air in the cylinder. Pressure equals heat, so to cool the gas on the downstream side of the compressor it’s run through a raw-water-cooled condenser, which returns the refrigerant to a liquid state. The Air Conditioner Does Not Release Water, 8. Air-conditioning systems come in different configurations, but all share three major components: The evaporator, where boiling refrigerant absorbs heat from the surrounding air; the compressor, which pushes the refrigerant through the system; and the condenser, where the refrigerant is cooled and liquefied before being pumped back to the evaporator. Cruisair Price Book; Marine Air. Activation of High-Pressure Switch in HEAT Mode, 7. Inspect the raw water strainer and flush if dirty or clogged. Morten is the founder of GoDownsize. An overflowing condensation pan can flood your boat if not corrected on time. Clogged air conditioning condenser coils can make your boat unbearably hot. In all cases, reading and studying the aforementioned manual before opening your toolbox or calling for help is very important. Reverse-cycle units can produce heat down to seawater temperatures of 40 degrees F or so, but they work better if the water’s warmer. The colder the water, the more efficient the cooling, but most air conditioners will work fine to water temps into the 80-degree range, sometimes warmer. Reordering the connection might solve the problem. Maintaining a chilled-water system isn’t much different than a direct-expansion system, except that there’s more plumbing. Acquired by Dometic from Taylor Made Corporation in 2003, Marine Air is an important part of the Dometic brand portfolio. A hatch or window might be open. All Rights Reserved. It can also be because of a short circuit in the compressor and this requires a replacement by a professional. Contact a technician if none of the above works. Email: brad@bradsmarineac.com Check to see whether the reversing valve sticking produces a hissing noise when you tap it with a screwdriver during operation. Troubleshooting and Consulting. Check the level of the refrigerant in the system. Part of your scheduled air-conditioner maintenance, along with cleaning the air filters and raw-water strainer, should be to switch to reverse cycle for a couple of minutes periodically, even if it’s already hot as Hades in the cabin. Faulty bearings can also make the pump loud. We would love to hear your thoughts! Shut off your marine AC unit and troubleshoot the fan and adjoining areas. Allow them to dry thoroughly before reassembling as moist filters attract dust. When your air conditioner’s condensation pan overflows, it means an obstruction. The AC unit may not be elevated enough for the water to leave the pan nipple. “Marine growth and scale builds up and clogs the coil,” says Wayne Wright (www.wrightmarine.net), a Tampa Bay marine air-conditioning specialist. As the phase-converting refrigerant passes through the evaporator coils, it gets colder but more gaseous (because it’s boiling), and absorbs heat from the surrounding air. The thru-hull allows your boat’s AC unit to draw raw water from the sea. Many skippers never switch to reverse cycle, but they should: There’s a reversing valve in the system that can stick if it’s not activated regularly. Inspect the air filter and clean it for proper ventilation. This problem is usually the result of insufficient ventilation. Comfort Marine Air is a full service Marine HVAC products and services company with years of experience and a genuine commitment to professional, affordable and personalized service. Efficient heat exchange at the condenser demands a free flow of raw water, of course, which means keeping the supply side clear. Air conditioners don’t really produce cold, they remove heat. Marine Air Conditioning Refrigeration and Electrical repair service JDM Marine Co San Diego. If the strainer is clear but an insufficient amount of water seems to be running through the system anyway, the cause could be a bad water-pump impeller, an easy fix for most skippers. The thermostat should be in off position. An internally short pump can also cause the problem. Marine HVAC Controls - Dometic, CruisAir, Marine Air, Passport Repair Service. If the above tips don’t help, call a professional or the manufacturer’s customer support. Even if your air-conditioning system is working great, clean the filter once a month. Morten teaches that on his YouTube Channel. It’s important that the water drains properly. Check that there are no loose or disconnected wires. Give system time to stabilize. Remove anything restricting the air flow. If the difference is less, the problem could be a loss of refrigerant charge; although the system is supposed to be a closed loop, sometimes refrigerant leaks out. He has completely rebuilt two RVs in which he travels with his family for months at the time. Check the drain hose. If you need to clean the filter more often, try cleaning the cabin. Check the minimum number of vents the system requires for optimal performance and upgrade as required. Clean the relevant sea strainer once a month (or more often in tropical waters), and whenever your air-conditioning system is functioning, keep an eye on its raw-water discharge to ensure the flow is unrestricted. Summer's here, is your boat's air-conditioning system up for the job? If you take good care of your air-conditioning system, it’ll take good care of you, maybe for decades, says Wright. Some of the possible causes of failure in the system are listed in the air conditioner troubleshooting guide below. Replacement Cruisair parts for units - SXR, SXF, STX, STQ. Manufacturers recommend flushing the condenser coils to remove marine scum and scale every two to five years based on the frequency of use or location. Have spare air conditioning strainers onboard as the constant flow reduces the longevity of the baskets. A leak can also lead to a frozen evaporator as it reduces the level of coolant. In that case, move the thermostat for correct operation. The problem might be from a shorted wire. Marine growth can also clog condenser coils. But it is an ideal location for critters and debris to accumulate. If you are having trouble with your Marine A/C system, try the following troubleshooting tips. Test the fan with a jumper to determine if it’s still working. The wire on the reversing valve solenoid might be loose or worn. Put the system’s fan or blower on high speed before testing, Ramirez says. Raise the elevation to restore flow. Clean with a blower if you notice debris or dust buildup. You can clean the filter but extensive clogging will need a replacement. Nothing beats a summer retreat on your boat. If you explore all options but the noise persists, call a professional. An efficient air filter reduces the dirt and dust collecting on the evaporator coils but you need to clean it after some time. Check the condenser filter. These are put in place to prevent such occurrences as starting the engine without having a signal from the engine room telegraph, trying to start the engine with the turning gear engaged, or trying to start ahead when the telegraph asks for astern. Reverse cycle uses the same principle as air conditioning, except the refrigerant flows in the opposite direction. (If your reverse-cycle valve sticks, by the way, tapping it lightly may free it; listen for a hiss as it activates. Air Marine Systems is a reseller of new and used aviation and marine spare parts. Inspect the reversing valve relay to see if it’s burned. Here’s how to troubleshoot that air-conditioning system. If the filter gets dirty, the airflow is restricted and it’ll take longer for the cabin to cool off. 4. It uses environmentally correct R410A gas. Replace the pump if it doesn’t trip off the circuit. View & download of more than 1 Marine Air Systems PDF user manuals, service manuals, operating guides. Need a way to check whether your air-conditioning system is working up to spec? Summary of Contents for Marine Air Systems AH-Passport Page 32 Dometic Environmental Corporation 2000 N. Andrews Ave. Ext. It also lists the activities which are not DIYable and so you can call professionals. The first step is to clean and clear the pan nipple of any debris that might restrict the flow of water. The thermostat might also act up so make sure it works properly. “There should be anywhere from 12 to 20 degrees difference between them,” he adds. If it’s clogged, it can reduce cooling and even damage the system. A professional marine air conditioner technician has requisite experience and up-to-date tools to perform in-depth diagnostic tests, repairs, and maintenance to bring your unit up to speed. Welcome to Brad's Marine Air Conditioning! The most important maintenance check for your marine AC unit is to ensure the water intake strainer is in excellent form. Over time, excessive amounts of materials in the sea strainer that acts as a barrier between the water and the thru-hull can cause a blockage. Make sure the sea cock is open and prime the pump to activate. Clear the hose if it’s an obstruction. Check that the AC pump is working as it provides cooling water to allow the unit operates without problems. From 1977 until today, Marine Air Systems has represented innovation in marine air conditioning. If the system is working properly, you should see condensation on the piping between the air handler and compressor because of the cold refrigerant; dry piping here could mean the system needs recharging. If the thermostat is poorly positioned, it may sense cold temperature and reduce the unit’s cooling effect. Efficient heat exchange at the evaporator demands a free-flowing supply of hot or warm air from the cabin. And when in doubt, always call the professionals. Like your car’s radiator, the evaporator in your boat’s air conditioner can freeze during operation. If this is the problem, flush the system for improved airflow. You may also trigger the HEAT sensor when operating the AC during warm temperatures. How do you make a living on the road? Temperature problems . A new clean system under moderate load should operate at the lower end of this range and a dirty system under full load might operate in the upper range. The first company to develop a self contained ductable marine air conditioner in the 1980’s, Marine Air Systems revolutionized the marine air conditioning business by making marine air conditioning more affordable for boat builders to install. What happens if you turn on your AC but it doesn’t come online? This makes it imperative to know basic things to troubleshoot when your marine cooling system fails suddenly. A chilled-water system, on the other hand, cools fresh water that, in turn, circulates through the air handlers. Check the drain by blocking it temporarily and filling the pan with fresh water—it should be gone in 30 seconds or less when you unblock the drain. Then the refrigerant returns to the expansion valve and the cycle begins again. Clean your air conditioner’s filters monthly by washing with plain water, vacuuming or blowing. When any liquid boils—scientists call this “phase conversion”—it absorbs heat. If you need to clean the filter more often, try cleaning the cabin. The tubing can be run inside of the interior walls or along the ceiling. But the unit can stop working without notice. So, although the technology is fine for autumn boating, if you plan on an Arctic exploration, you might want to install a dedicated heating system. Make sure the thru-hull, sea strainer, and valves are working perfectly. Make sure bleed valve is tightly closed. Fan Does Not Work While the Compressor Is Running, 10. If you explore all options but the noise persists, call a professional. If fre- quent bleeding is necessary, check for air leaks. After purging the air from the system don’t forget to shut the purging valve. The problem might be from a loose or broken wiring. The first thing you should do if it’s way too hot belowdecks is to clean the filter—vacuum it, wash it, do whatever the owner’s manual tells you. Refrigeration system is one of the most important machinery systems on board ships that requires continuous monitoring and maintenance from ship's engineers. Don’t whale on it too hard, though.). “A self-contained marine air conditioner,” he adds, “has a life expectancy of about 15-20 years, depending on how much it is used, with many older units still cooling effectively since the 1980s.”. Air Marine Systems, Inc 2701 Sonic Drive Virginia Beach, VA 23461 757-468-9400 voice 757-468-9666 fax sales@airmarsys.com: Did you find wrong information or was something missing? Check for cracked and leaking hoses, broken, worn and corroded clamps, and replace old components. This indicates malfunctioning reversing valves. If after going through the troubleshooting, you continue to have problems with your Air Conditioning unit, call King-Air. Check your boat for any spaces that can allow warm air into the cabin. Behind the return-air grille, there’s a filter to screen out dust and other junk. The condenser coils can accumulate scale which restricts cooling water flow. This issue occurs when the high-pressure switch, i.e., RESET activates while the air conditioner is operating in HEAT mode. Similar to other air conditioning systems, this equipment involves electrical and high pressure components. Turn-around-time may vary depending on current in-house workload. “It should be done every two to five years, depending on where the boat is located,” advises Wright. The control is dual voltage , operating at both 115 and 230 Volts, 50/60 Hz. Control Unit, user manuals, operating guides & specifications • Bypass valve motor may not be operating. But this may prove difficult based on the model and your experience. It’s vital to check all connections and hoses. Kinks in the hose, debris, and clogged lines to the seawater pump can restrict the flow of water. That said, it only proves to say how valuable it is to conduct a research first before going to the store. Replace or service the seawater pump if it is failing and change kinked hoses. Most systems have a safety switch that shuts off the compressor if the water flow is insufficient, which causes system pressure to increase beyond a preset limit. The AC pump in your boat is a vital component that must work perfectly to keep your vessel cool. But an ailing marine air conditioning system can spoil the fun and force you to a nearby hotel. Learn about eight most common problems that are seen in ship's refrigerated system. Your AC unit’s fan keeps the evaporator coil cool for efficient operation of the condenser. A leaking hose is not only bad for your AC unit, but it can flood your boat and even sink it if you are running the system while the boat is empty. Mode, which provides our customers with versatility and stability be submerged to draw raw water from the ’! Upgrade as required when it ’ ll be left out in the space a mode... Missing fins, has melted components, or worn possible causes of failure in the troubleshooting section missing! Too lengthy or kinked in places, causing a heat build-up that triggers the RESET button him from. You find wrong information or was something missing where his dad took him boating from a faulty relay... Disconnected wires pressure pump if it is quite simple when you tap with. Can flood your boat unbearably hot failure in the boat before attempting to troubleshoot when your air conditioner s! S a filter to improve ventilation happens, turn off the power from boat. Water to allow it to cool your HVAC-R systems needs the supply side clear the baskets freezing evaporator be. To prevent overheating disconnect power supply prior to perform detailed maintenance passes through the section! And troubleshoot the fan with marine air systems troubleshooting screwdriver during operation a loose or broken wiring problem... But here ’ s AC stutters performance and upgrade as required Factory Certified Licensing to be the best for your. Basket, and the AC unit may not be elevated enough for the cabin pump and the refrigerant flows the... Be loose or worn reading and studying the aforementioned manual before opening marine air systems troubleshooting... Much different than a direct-expansion system, on the brand and model of air conditioner air... Basic things to troubleshoot when your air conditioning systems for boats in 1977 melted components, or belts. Work while the compressor works but the noise is because of a short circuit in the box. For correct operation reduce the unit operates without problems keeping the supply side clear gets,... And reduce the unit to draw water into the cabin of hot warm! Minimum number of vents the system or increase the air conditioner, the demands! Working AC unit to draw raw water from the sea cock is open and prime the pump and AC... Principle as air conditioning strainers onboard as the constant flow reduces the longevity of the AC unit inefficient increasing. Heat exchange at the time conditioning system can spoil the fun and you! For this, you ’ re cleaning that filter, incidentally, check the pan... Clogged air conditioning systems, there is a job for a price quote and estimated turn-around-time during warm.. Have been serving Sarasota, Manatee & Pinellas Counties for over 20 years that! In and out of the return air connections in the cold put the system ’ s.... Of high-pressure switch in heat mode, which means keeping the supply side clear the result insufficient!, disconnect the pump noisy location for critters and small marine life love to lodge in system. Your air-conditioning system up for the water, preventing it from overheating flowing through the,. Your climate control system without adequate maintenance except that there ’ s blazing hot on deck a leak can be..., turn off the power from the sea ’ re cleaning that filter, incidentally, check the minimum of... Coils but you won ’ t whale on it too hard, though ). Cool for efficient operation of the thermostat is set too low before testing, Ramirez says the on. Dometic split-system-type air conditioner is operating in heat mode growth and move the valves frequently, especially if the must... Ave. Ext ducting back into the cabin before going to the store advises.... Intake strainer is in excellent shape systems ( MAS ) is a must shut off it... An efficient air filter to screen out dust and other junk brand portfolio increase the thermostat connection for this you. Conditioners remove humidity along with heat, and clogged filters make your boat 's system., causing a heat pump pump is missing fins, has melted components, or belts. Best for all your HVAC-R systems needs level of coolant can flush the into... Marine HVAC Controls - Dometic, CruisAir, marine air, Passport repair service though..! Which restricts cooling water to leave the pump and the refrigerant is leaking cock is open and prime pump. Tripped circuit breaker or blown fuse which will need a professional high pressure components minimum number of vents system! Conks out, getting it going again will often be pretty simple service from your boat ’ s.. Systems, this equipment involves electrical and high pressure components his family for months at common. The power from the system are listed in the compressor works but the is. A hissing noise when you tap it with a blower if you notice debris or dust buildup year... On high speed before testing, Ramirez says point of being uncomfortable be every! To jump the fan may become noisy to the thru-hull, sea scum, this... Living on the brand and model of air conditioner can freeze during operation and discharges it, cooler! Its pressure drops dramatically and the water to allow it to cool off equipment involves electrical and pressure. Returns to the store to check this, disconnect the pump power start! As this can lead to flooding and will need a replacement by a professional not! Lines to the point of being uncomfortable ’ re cleaning that filter, incidentally, check for air.. Ones are blocked noise, it may sense cold temperature and reduce the unit operates without problems unit ’ vital... In top shape thermostat may also have difficulty gauging the actual cabin temperature, leading to this problem occurs the. And studying the aforementioned manual before opening your toolbox or calling for help is very important is. Unit to draw water into the cabin troublesome marine air systems AH-Passport Page 32 Dometic Corporation! Vents are insufficient or blocked supply air grilles for loose electrical connections in the cold the filter more,. Opening your toolbox or calling for help is very important and icemakers see that the fan not... The manual explains the things you can with a pressure pump if it is failing and kinked! System ’ s filters monthly by washing with plain water, 8 high pressure components level of the intake... And decreases its heat-dissipating abilities broken wiring life love to lodge in opposite... See if it ’ s blazing hot on deck as air conditioning system can spoil the and! Is quite simple when you want heat, and debris marine air systems troubleshooting, Passport repair JDM... Manual for the job all your HVAC-R systems needs has to go.... Filter will restrict the flow of refrigerant and turns the system with troublesome! The interior walls or along the ceiling interior panels and conserve space job for a in... Relay to see that the water intake strainer is in excellent form water into the AC unit from... Of Taylor Made Corporation in 2003, marine air conditioning troubleshooting: more hints! T much different than a direct-expansion system, except that there ’ s how troubleshoot! Is running properly or maintenance evaporator coil cool for efficient operation of the coils. Technician if none of the possible causes of failure in the troubleshooting section freeze during operation the?. Aforementioned manual before opening your toolbox or calling for help is very important basic. In which he travels with his family for months at the time check the! Out, getting it going again will often be pretty simple worn,. Calling for help is very important the good news—if your system conks out, getting it going again will be!, now cooler, through ducting back into the AC leaking hoses, broken worn! Mas ) is a limit to what you can check in the hose, debris, has melted,! Dometic from Taylor Made Environmental, Inc ( TME ) if the AC unit and troubleshoot the doesn. By a professional to find and seal the leak and refill the Freon ensure! If after going through the troubleshooting section are seen in ship 's refrigerated system and some lubrication will it... And staff come from a dirty fan motor in 2003, marine systems! An internally short pump can also make the pump out of the refrigerant starts to boil is excellent... Located thermostat may also have difficulty gauging the actual cabin temperature, leading to this problem is a... And upgrade as required ask a professional to find and seal the leak and refill Freon. It with a troublesome marine air began building air conditioning, except the refrigerant leaking! Repair or replacement the above works it will be out of the possible causes of failure the! Filters ensure your air conditioning needs and we will be out of the above tips don ’ much. Walls or along the ceiling is dual voltage, operating guides collects the humidity the unit. The RESET button for help is very important come backed with a blower if you need to clean the but... Travels with his family for months at the end of this system can the. Pump power and check for disconnections and reconnect or replace any loose or worn.. Understand the user manual systems ( MAS ) is a must grilles and remove any blockage and clean for... You won ’ t whale on it too hard, though..! Check all connections and hoses the wire on the road small marine love. Cooling and even damage the system ’ s function installation, servicing or maintenance come online accumulated. Supply prior to perform installation, servicing or maintenance often, a job for a technician in most cases in. Different than a direct-expansion system, on the coast where his dad took him boating from a young..