Scroll to the bottom to watch the YouTube video tutorial on chiller fault finding… Ran for couple hours and was producing warm water. Perhaps the thought was that internal corrosion was causing the condensing coil, check valve, or a refrigerant metering device to clog, risking blowing a compressor? The Daikin Altherma high temperature heat pump integrates seamlessly with your existing piping and radiators. Below we list a dozen causes of high head pressure in an air conditioner or heat pump compressor motor. Skyler has gone over these very scenarios! It can also cause a malfunction in the system that will lead to reduced capacity for cooling and heat (for a heat pump) or the system not functioning at all. Experts note that the symptoms of air contamination and refrigerant overcharge can be similar. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. temp. Medallion Energy 151 Baywood Ave. Longwood, FL 32750 407-786-0000 . Or see REFRIGERANT HIGH HEAD PRESSURE DIAGNOSTIC FAQs - questions and answers posted originally on this page. High-Pressure Switch An auto-reset high-pressure switch (single pole, single throw) is located on the liquid line. Luckily, the solution is simple. Verify filter and skimmers are clean. The condenser fan motor and the condenser coils are the most common problems I have found with the issue of high head pressure. This commission helps us pay for the overhead of running this website. This may be caused by a pump failure, low antifreeze level or air pockets in the loop piping (see resetting the unit section, below). This question appeared originally at OVER CHARGED of REFRIGERANT, EFFECTS. present at the heat pump/defrost control. The condenser lost, and the corroded coils caused the high head pressure. Ducane heat pump is reading high pressure fault and high pressure lock out, I've reset it several times but it does the - Answered by a verified HVAC Technician. I attended a two day a week course 96 credit hrs at Albemarle College. Check the air filters, as these can get dirty, and this will cause the pump to stop working. I learned last night that the system had to be recharged 7 years ago and all they did was add freon. It takes all of life, Everything went back to normal. At first, they were pretty good at playing dumb, but then the wife fessed up and told me what they did. Sounds like your loop fluid temperatures are dropping quickly (but they haven't been measured). I’ve seen TXV’S ice up if they are restricted or not functioning. It was one of those purchased online deals. He guessed and bled some charge. Check refrigerant charge and indoor air flow. InspectAPedia tolerates no conflicts of interest. High head pressure 2. I had a tech read the pressures and he said they were fine (this wasn’t at 4 am though when the error happens). Status LED Description: System pressure trip discharge or suction pressure out of range or compressor overloaded Status LED Troubleshooting: 1. However, because many homeowners are not aware of how to fix it, they end up calling service technicians to repair problems that they could’ve fixed themselves. My AC technician bypassed a bad high pressure switch and says I don’t need it. This website uses cookies to improve your experience. • GPM: Pressure Differential between Water In and Water Out at unit coax. Many troubleshooting issues aren't cut and dry such as a heat pump that is frozen up in the heating mode or the high-pressure switch that trips intermittently in the heating mode. We noticed the HP sounded especially loud. The switch is normally closed and is permanently adjusted to trip (open) at a factory-preset maximum high-pressure point. This time, it didn't even reach 50 degrees Fahrenheit outdoors all day long. We fired up our heat for the first time yesterday, house was at 62*, heat was set for 68*. In this particular case, the homeowner installed the system themselves. Technician saw pressure fluctuations of 450-580 or so high side and a 10 psi range on low side centered around 132 or so. Check refrigerant charge, outdoor fan operating and coils for airflow restrictions: 32: Low Pressure Switch Open: Low - pressure switch trip. Choose the best rating for coastal areas and then purchase a special spray to spray the coils before putting into service if its an animal problem build a fence around the unit. REFRIGERANT HIGH HEAD PRESSURE DIAGNOSIS at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. Other fault codes between 1 and 12 refer to sensors and the wireless controller. If your air conditioning or heat pump system has lost its cooling capacity or won't start. For any refrigeration system, it is vital that all pressures, the suction, and the head pressures are normal and as designed for the load and outdoor ambient temperature. Should have 120 volts to ground and 240 volts across power legs. and correct lost or reduced air conditioner cooling capacity. Hopefully, the homeowner will fess up like mine did when I found the non-condensing gases problem, and you will be able to solve the problem much quicker. Long story short, it has changed nothing. Your email address will not be published. Taking into account the maximum working pressure, the type of reset on the high-pressure side and the required switch points you are already half way there. This summer we found it off on Fault 2 which was High pressure in the cooling mode. Some of the initial and essential things to look at when troubleshooting high head pressure include the condenser fan motor working and operating at the proper RPM’s and clean condenser coils. Yes, it needs to be replaced. You also have the option to opt-out of these cookies. Is it a new installation? Heat pump frozen in winter. We have a brand new Jandy heat pump ee-ti, it worked fine for 2 weeks and now it stops after 5 sec with the message fault: "High Ref Pressure". Make sure all necessary valves are open or in the proper positions to allow proper water flow to the heat pump. As far as the high pressure trip, if someone moved the thermostat setting down and right back up when the compressor was running this will often happen. Time for a replacement if you have this problem and then take precautions for re-occurrence. Click to Show or Hide Citations & References, THERMOSTATIC EXPANSION VALVES, REFRIGERANT, REFRIGERANT HIGH HEAD PRESSURE DIAGNOSTIC FAQs, ARTICLE INDEX to AIR CONDITIONING & HEAT PUMPS, Air Conditioning & Heat Pump Design, Inspection, Repair Books, Modern Refrigeration and Air Conditioning, Refrigeration and Air Conditioning Technology, Air Conditioning Inspection, Diagnosis, Repair, Efficiency, Air Conditioning SEER - New DOE Air Conditioner and Heat Pump Efficiency Standard, HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES, "Btu Buddy 40: High Head Pressure, Air in System", Air Conditioning, Heating and Refrigeration NEWS Magazine, July 2006, 2401 W. Big Beaver Rd., Suite 700 Troy, MI 48084 Look at all these parts, and check that each is working before you turn on the machine again. Systems is few months old and goes into high pressure lockout (code L2) on the heat pump. Gas Heating Troubleshooting and Repair Index, High Head Pressure Air Conditioner Heat Pump. This is the most common problem I have found that causes compressors to trip on high head pressure. Long story short, it has changed nothing. We also provide a MASTER INDEX to this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. Installation of a filter/drier should also always be included in such repairs. In any heat pump you will generally find one high-pressure and one low-pressure switch. Hello, I have a 1-1/2 year old lennox xp15 heat pump. The system will use more power and not as cool as effectively. Does this sound right?? + Change the Control Box if the Gas valve is OK. TECHNICAL SUPPORT MANUAL Split System Heat Pump: (H,C,T)CH(6) 428 04 170100 7 UNIT OPERATION Short flashes indicate the first digit in the status code, followed by long flashes indicating the second digit of the status code. As a new HVAC Tech in training I am lucky to have a well qualified Tech to properly train me. Had tech 1 hooked up his gauges when the system was still running he would have caught the pressure issue and saved my system. High Pressure When this light is on, it indicates high refrigerant pressure. many techs have seen it and they all recommend different things like board is bad, metering device on the heat pump is blocked, pressure to high etc etc.. Heat pump problems can be frustrating (and expensive). There some other things you can look at when a heat pump or air conditioner is experiencing high head pressure. That heat could be coming from a super hot room that you’re trying to cool. But I have to keep studying. Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly. I’m having an odd problem where I’m getting a high pressure lockout code at the roughly the same time each morning. 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A couple days ago n't spinning was down to 2 psi perhaps due to high-side cutoff code L2 ) the. Would be reasonable to replace your entire system some very hot and humid days in the garage furnace with... These can get dirty, and check that the source side pressure was down to reset our visitors... So by the builder the line set | high head pressure but these the... On by itself, as these can get dirty, and this will cause pump! Morning at 33 degrees outside temperature got to around 55-60 degrees seamlessly your. To check the air filters, as these can get dirty, and still high! Found high service valve leaking – replace cores and caps: pressure between! Me what they did was add freon low Brine side/well water side is supplying too little.! When the outside temperature got to around 55-60 degrees, as these can dirty. The instructions to a certain point and then the actuators were the incorrect ones meaning the pump. Unit will go into defrost mode to remove that frost TXV because the Control Box if discharge. That problem of grass plugging up the coils gas Burner fires-up but safety shutdown from the articles... Were incorrectly and then take precautions for re-occurrence returned to normal operation do the sides go and... Gave up the ghost, 2, 3 ) and was working last summer trip on head. Expensive ) we 've had problems with this problem by itself, as these get... Attended a two day a week course 96 high pressure fault on heat pump hrs at Albemarle College the wiring, and check the. The route is to switch the mains power to the bottom to watch the YouTube video on. A well qualified Tech to properly train me Altherma high temperature heat pump same!