Turn-around-time may vary depending on current in-house workload. Often, a noisy AC unit results from a dirty fan motor. Clear the hose if it’s an obstruction. Valve bypass lever should automatically move to open position Make sure the condenser coil’s caps are removed and the water strainer and pump are below water level. Air conditioners don’t really produce cold, they remove heat. How do you make a living on the road? For this, you need a professional to find and seal the leak and refill the Freon. It can also be because of obstruction of the return air. The compressor pumps hot, pressurized refrigerant into the air handler where it transfers its heat to the cabin via the flow of cool cabin air over the coils. The filters ensure your air conditioner exchanges heat efficiently. 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. All Rights Reserved. A dirty condenser filter will restrict the flow of water, and this can cause the unit to overflow. The point? Please contact us for a price quote and estimated turn-around-time. This occurs when you are using the thermostat. Remove anything restricting the air flow. The control is dual voltage , operating at both 115 and 230 Volts, 50/60 Hz. Read more about Morten here. Kinks in the hose, debris, and clogged lines to the seawater pump can restrict the flow of water. Checking and recharging the system is a job for a licensed air-conditioning technician. Clean your air conditioner’s filters monthly by washing with plain water, vacuuming or blowing. It uses environmentally correct R410A gas. The manual explains the things you can check in the system and the correct procedure. If fre- quent bleeding is necessary, check for air leaks. Check the drain hose. Reordering the connection might solve the problem. 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. Clean with a blower if you notice debris or dust buildup. Give system time to stabilize. If it does stick, when you want heat, you’ll be left out in the cold. If after going through the troubleshooting, you continue to have problems with your Air Conditioning unit, call King-Air. Air conditioning troubleshooting: More helpful hints to avoid problems. Turn off the power and check for loose electrical connections in the electrical box. Inspect the reversing valve relay to see if it’s burned. The first step is to clean and clear the pan nipple of any debris that might restrict the flow of water. Except you have a background in HVAC systems, there is a limit to what you can with a troublesome marine air conditioner. Marine growth can also clog condenser coils. 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. Check that the AC pump is working as it provides cooling water to allow the unit operates without problems. Raise the elevation to restore flow. The wire on the reversing valve solenoid might be loose or worn. If you take good care of your air-conditioning system, it’ll take good care of you, maybe for decades, says Wright. In that case, move the thermostat for correct operation. He has completely rebuilt two RVs in which he travels with his family for months at the time. Dusty evaporator coils are inefficient and will increase the strain on your unit. But to perform optimally, the pump must always be in contact with the water. This makes it imperative to know basic things to troubleshoot when your marine cooling system fails suddenly. Our marine air conditioning systems are designed to be as compact as possible. Eventually the autumn chill will send you reaching for the heat switch, and when you hit it, you want warm air to flow. A fan blows warm air from the cabin across the evaporator and discharges it, now cooler, through ducting back into the cabin. This indicates malfunctioning reversing valves. 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. Conditioner in top shape internally short pump can restrict the flow of water, or... Way to check this marine air systems troubleshooting disconnect the pump makes a lot of noise, can. Disconnect the pump needs to be submerged to draw water into the.! 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