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. Need a way to check whether your air-conditioning system is working up to spec? Most air-conditioning systems are “direct expansion”: they pump refrigerant directly to air handlers in the boat’s living spaces. The thru-hull lets water in and out of the AC unit. Contact a technician if none of the above works. A gurgling sound indicates air in the system. Most marine FWC thermostats open at 160°F and will be fully open at approximately 180°F. (If your reverse-cycle valve sticks, by the way, tapping it lightly may free it; listen for a hiss as it activates. It also lists the activities which are not DIYable and so you can call professionals. If it does stick, when you want heat, you’ll be left out in the cold. After trying all the troubleshooting tricks in the book and you can’t resolve the issues with your cooling unit, ask for professional help. Clean the existing duct system or increase the vents for adequate airflow. We would love to hear your thoughts! The best way to understand how to care for whatever type of system you’ve got is to take a trip through the system, starting at the expansion valve, located just upstream of the evaporator. 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. If after going through the troubleshooting, you continue to have problems with your Air Conditioning unit, call King-Air. He has completely rebuilt two RVs in which he travels with his family for months at the time. A chilled-water system, on the other hand, cools fresh water that, in turn, circulates through the air handlers. Summer's here, is your boat's air-conditioning system up for the job? Check the return air. The air start system looks rather complicated, but it is quite simple when you examine it without the safeguards. Don’t let the dog days of summer make you swelter. We may earn a commission when you buy through our links. The filters ensure your air conditioner exchanges heat efficiently. Here, your boat’s AC unit works normally, but it’s not discharging any water. Have spare air conditioning strainers onboard as the constant flow reduces the longevity of the baskets. The first step is to clean and clear the pan nipple of any debris that might restrict the flow of water. Check that there are no loose or disconnected wires. • Air handler coil may be air locked – bleed if necessary. The evaporator’s duct might be too lengthy or kinked in places, causing a heat build-up that triggers the RESET button. If you turn on your boat AC unit but can’t feel or hear anything, it could be from different factors but all of them are related to your electrical circuitry. Fan Does Not Work While the Compressor Is Running, 10. Replace or service the seawater pump if it is failing and change kinked hoses. If your marine AC is not cooling like before, maybe the refrigerant is leaking. Activation of High-Pressure Switch in Cool Mode. To check this, disconnect the pump power and start the AC. Acquired by Dometic from Taylor Made Corporation in 2003, Marine Air is an important part of the Dometic brand portfolio. 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. Clogged air conditioning condenser coils can make your boat unbearably hot. The problem might be from a shorted wire. You can also experience this problem if the thermostat is set too low. The Passport I/O Environmental Control is a microprocessor-based controller, designed for the precise monitoring of direct expansion and chilled water air conditioning systems in marine environments. 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. The Replacement Cruisair Compressor used in F and R series units are also available for Btu If the thermostat is poorly positioned, it may sense cold temperature and reduce the unit’s cooling effect. Check for disconnections and reconnect or replace any loose or worn cables. It makes the evaporator dusty and decreases its heat-dissipating abilities. Behind the return-air grille, there’s a filter to screen out dust and other junk. The point? 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. (Probably the #1 question we get). Like your car’s radiator, the evaporator in your boat’s air conditioner can freeze during operation. This unit is someth… If fre- quent bleeding is necessary, check for air leaks. Look for damage, clog and anything which can obstruct the smooth flow of cooling water. Marine AC Information. If you take good care of your air-conditioning system, it’ll take good care of you, maybe for decades, says Wright. Troubleshooting and Consulting. 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. An internally short pump can also cause the problem. 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