Always disconnect power supply prior to perform installation, servicing or maintenance. So one of the easiest and most inexpensive problems to fix on our air conditioning troubleshooting mission is to make sure windows or doors are closed; otherwise you are undermining your air conditioner’s efficiency. Air conditioners don’t really produce cold, they remove heat. What happens if you turn on your AC but it doesn’t come online? Don’t whale on it too hard, though.). But it is an ideal location for critters and debris to accumulate. Check that the AC pump is working as it provides cooling water to allow the unit operates without problems. Learn about eight most common problems that are seen in ship's refrigerated system. Maintaining a chilled-water system isn’t much different than a direct-expansion system, except that there’s more plumbing. Replace or service the seawater pump if it is failing and change kinked hoses. 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. The fix is to flush out the cooling system with a weak acid solution, a job for a technician in most cases. It can also be a tripped circuit breaker or blown fuse which will need a replacement. “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.”. If you need to clean the filter more often, try cleaning the cabin. In that case, move the thermostat for correct operation. It’s vital to check all connections and hoses. If the AC pump is missing fins, has melted components, or worn bearings, replace it. Either the vents are insufficient or the existing ones are blocked. The thermostat should be in off position. This problem arises when the air conditioner does not produce heat in HEAT mode. 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. Normal temperatures. • Bypass valve motor may not be operating. Often, a noisy AC unit results from a dirty fan motor. Check the drain hose. 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. Welcome to Brad's Marine Air Conditioning! Email JDMMarineco@Gmail.com. It uses environmentally correct R410A gas. Here’s how to troubleshoot that air-conditioning system. Check that there are no loose or disconnected wires. Clear the hose if it’s an obstruction. A leak can also lead to a frozen evaporator as it reduces the level of coolant. Turn off the power and check for loose electrical connections in the electrical box. Activation of High-Pressure Switch in HEAT Mode, 7. Checking and recharging the system is a job for a licensed air-conditioning technician. All Rights Reserved. It can also be because of obstruction of the return air. At the end of this piece, you will know the basics to keep your air conditioner in top shape. The AC will shut off if it doesn’t get water flow to prevent overheating. Focused initially on self-contained systems that are ideal for small to mid-sized boats, Marine Air climate systems provided customers with a “large boat” feeling of comfort and luxury. 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. 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. Efficient heat exchange at the condenser demands a free flow of raw water, of course, which means keeping the supply side clear. 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, Depending on the brand and model of air conditioner, the following are things to check when you have issues with your boat AC. If the filter gets dirty, the airflow is restricted and it’ll take longer for the cabin to cool off. The AC pump in your boat is a vital component that must work perfectly to keep your vessel cool. Turn-around-time may vary depending on current in-house workload. You may also trigger the HEAT sensor when operating the AC during warm temperatures. 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. Shut off your marine AC unit and troubleshoot the fan and adjoining areas. 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. Please contact us for a price quote and estimated turn-around-time. Check to see that the fan is running properly. Check your user manual for the correct way to clean the system or ask a professional to perform detailed maintenance. Julio Ramirez, a technical advisor with air-conditioning maven Dometic (www.dometic.com), recommends taking the temperatures of the supply and return air with a digital thermometer—it’ll set you back about 20 bucks if you don’t already have one. But you won’t get the best service from your climate control system without adequate maintenance. If fre- quent bleeding is necessary, check for air leaks. Call us about your marine air conditioning needs and we will be happy to help! The tubing can be run inside of the interior walls or along the ceiling. Search for military aircraft including a diesel engine part for a helicopter or airplane, ship repair supplies and more. (Probably the #1 question we get). If you need to clean the filter more often, try cleaning the cabin. Because the water flow passing through the strainer is nutrient-rich, critters and small marine life love to lodge in the space. 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. You can clean the filter but extensive clogging will need a replacement. Some Older Cruisair Parts and Marine Air Systems Parts Are still Available Like - Blowers, Circuit boards, displays, and Keypads for older Marine Air Conditioners like Marine Air VCD, VCP, VRP, VHE. The Air Conditioner Does Not Release Water, 8. 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. Shut off your marine AC unit and troubleshoot the fan and adjoining areas. Make sure the thru-hull, sea strainer, and valves are working perfectly. Look for damage, clog and anything which can obstruct the smooth flow of cooling water. Inspect the hoses from the sea stock, strainer, pump, to the thru-hull. 2790 Kurtz , San Diego, CA 92110 But this may prove difficult based on the model and your experience. It’s July, and a skipper’s thoughts turn to his air-conditioning system—especially if the darn thing stops working and his family moves into the Holiday Inn next door to the marina. Clean your air conditioner’s filters monthly by washing with plain water, vacuuming or blowing. Contact a technician if none of the above works. To jump the fan, isolate the RED and GREEN wires in the thermostat connection. He grew up on the coast where his dad took him boating from a young age. Most air-conditioning systems are “direct expansion”: they pump refrigerant directly to air handlers in the boat’s living spaces. If your AC unit’s circuit breaker will not stay on, it may be because of: Check that the circuit breaker is not broken. Refrigeration system is one of the most important machinery systems on board ships that requires continuous monitoring and maintenance from ship's engineers. Clear brush and debris from outside unit and surrounding area 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. Check that the AC pump works properly and replace if faulty. We would love to hear your thoughts! Marine AC Information. If you fire up your system and it runs for a little while and then shuts off, it could be that the safety switch has tripped and you need to check the water supply. That said, it only proves to say how valuable it is to conduct a research first before going to the store. A freezing evaporator can be because the fan is not running efficiently or is damaged. The air start system looks rather complicated, but it is quite simple when you examine it without the safeguards. 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. Did you find wrong information or was something missing? Inspect the reversing valve relay to see if it’s burned. There are also safety systems incorporated such as a bursting disk and numero… Check your boat for any spaces that can allow warm air into the cabin. Whenever you experience this problem, check that water is flowing through the AC unit. If the above tips don’t help, call a professional or the manufacturer’s customer support. Flush the unit with a pressure pump if it is blocked. He has completely rebuilt two RVs in which he travels with his family for months at the time. The point? Fan Does Not Work While the Compressor Is Running, 10. He has filmed and interviewed people living in tiny houses and RVs since 2011. A fan blows warm air from the cabin across the evaporator and discharges it, now cooler, through ducting back into the cabin. 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. The control is dual voltage , operating at both 115 and 230 Volts, 50/60 Hz. If the fan has accumulated dirt and debris, has damaged bearings or worn belts, it will be loud. 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. Our marine air conditioning systems are designed to be as compact as possible. When this happens, turn off the pump and the AC unit to allow it to cool. Morten teaches that on his YouTube Channel. 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. Give system time to stabilize. 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. A gurgling sound indicates air in the system. If your air conditioner won't turn on, it's important to troubleshoot a few key things before you call in an HVAC technician, as this can save you time and - more importantly - money. How do you make a living on the road? Most marine air conditioners have a reverse-cycle mode, which changes the flow of refrigerant and turns the system into a heat pump. Phone: 727-492-2622. Here, your boat’s AC unit works normally, but it’s not discharging any water. Dirty and clogged filters make your AC unit inefficient, increasing the system’s workload. Increase the thermostat setting to remove ice from the system. A chilled-water system, on the other hand, cools fresh water that, in turn, circulates through the air handlers. 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. The main cause of this issue is restricted airflow and can be corrected by removing the obstruction. Our partners and staff come from a wide range of backgrounds, which provides our customers with versatility and stability. In this article, we look at the common issues to check when your vessel’s AC stutters. Clean with a blower if you notice debris or dust buildup. An award-winning Dometic self-contained turbo unit. Check for marine growth, large particles, sea scum, and debris. Your AC unit’s fan keeps the evaporator coil cool for efficient operation of the condenser. If this is the problem, flush the system for improved airflow. Temperature problems . The thermostat might also act up so make sure it works properly. When any liquid boils—scientists call this “phase conversion”—it absorbs heat. If you explore all options but the noise persists, call a professional. You can also experience this problem if the thermostat is set too low. We covered this at length in the troubleshooting section. You can flush the system with a weak solution of biodegradable acid or pressurized water. Marine Air Conditioning Refrigeration and Electrical repair service JDM Marine Co San Diego. Except you have a background in HVAC systems, there is a limit to what you can with a troublesome marine air conditioner. Remove anything restricting the air flow. Reassemble in case of misalignment and replace if it has extensive kinks. Clean the existing duct system or increase the vents for adequate airflow. Activation of High-Pressure Switch in Cool Mode. Most marine FWC thermostats open at 160°F and will be fully open at approximately 180°F. Put the system’s fan or blower on high speed before testing, Ramirez says. But an ailing marine air conditioning system can spoil the fun and force you to a nearby hotel. If the thermostat is poorly positioned, it may sense cold temperature and reduce the unit’s cooling effect. They mount in line with the interior panels and conserve space. This problem occurs when the high-pressure switch is triggered while the AC unit is operating in Cool mode. Clean with a blower if you notice debris or dust buildup. Allow them to dry thoroughly before reassembling as moist filters attract dust. Circuit Breaker Triggers Uncontrollably, 9. Turn off all the power from the boat before attempting to troubleshoot electrical components. A dirty condenser filter will restrict the flow of water, and this can cause the unit to overflow. This issue occurs when the high-pressure switch, i.e., RESET activates while the air conditioner is operating in HEAT mode. Air Marine Systems, Inc 2701 Sonic Drive Virginia Beach, VA 23461 757-468-9400 voice 757-468-9666 fax sales@airmarsys.com: 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. Like your car’s radiator, the evaporator in your boat’s air conditioner can freeze during operation. This problem is usually the result of insufficient ventilation. This pump provides the freshwater that cools the AC unit, preventing it from overheating. 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. And when in doubt, always call the professionals. 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. 4. Valve bypass lever should automatically move to open position 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. Summer's here, is your boat's air-conditioning system up for the job? The thru-hull allows your boat’s AC unit to draw raw water from the sea. While you’re cleaning that filter, incidentally, check the condensate pan under the evaporator for water. Troubleshooting and Consulting. If it does stick, when you want heat, you’ll be left out in the cold. Before troubleshooting your marine air conditioner or any other equipment, read and understand the user manual. Eventually the autumn chill will send you reaching for the heat switch, and when you hit it, you want warm air to flow. Check to see whether the reversing valve sticking produces a hissing noise when you tap it with a screwdriver during operation. From 1977 until today, Marine Air Systems has represented innovation in marine air conditioning. 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. Connect the collecting cylinder to the purging line of the condenser, open the valve, and collect air in the cylinder. (Nice vacation, huh?) Raise the elevation to restore flow. If everything fails, flush the unit with a pressure hose or call a professional if you can’t identify the source of the problem. A/C Installations; Direct Expansion A/C; DIY Marine AC Install Help; Marine A/C Pumps & Pump Relays; DIY Question about Marine A/C Wattage Draw & DC Inverter Power; Marine AC Control Identification for Marine Air Direct Expansion Units; Cruisair. 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. Planes or the waterline changes, it will be fully open at 160°F and will increase air. Blower if you notice debris or dust buildup read and understand the user manual the.! Acquired by Dometic from Taylor Made Corporation in 2003, marine air conditioner is operating in cool mode plain,... 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