What else can I look for, the lines sweating in an attic area and dripping through. • Remote controller transmission wire open. View and Download Mitsubishi MSZ-FA25VA service manual online. Visit the post for more. Had a tech tell me I have a refrigerant leak based on the temp of the copper pipe? Let our experts help you choose the best new mini split for your application. I’m also looking for a part for the outside unit to stop a slow drip. An air conditioner is no different. All the indoor units are showing the condensate image and not turning on. Richard Geary. Is it ever a good idea to install the outdoor unit in a garage in Florida ? Always goes into preheat mode 4 degrees before it reaches set temp. We have a 2 year old Fujitsu Halcyon mini split running a ceiling cartridge downstairs and two smaller wall units in the upstairs bedrooms. On 2015-12-19 by (mod) - heat not working on mini split in heat mode. These are both 12k. I have a mini split system heat pump and when I switch to heat the condenser comes on and the air handler it won't come on Is this a thermostat problem or inside unit control board failure? Set to 20 and it will run until 25 and cut out. Can anyone tell me what this might be and a way to fix it. Most local codes require 14 gauge wire, so using something smaller will not pass inspection in many areas. No display appears even when remote controller operation switch is turned on. Now, nothing happens when we turn on the heat. That doesn’t sound right. An improper amount of refrigerant can lead to many issues, including: The use of a proper line set is also critical to system performance. Our Mitsubishi heavy industries inverter split unit is flashing its timer light,4 times first, then 6 times then a pause then 6 times again ,what is the fault, unit not turning on the compressor. The same technician who re-installed everything came to fix it again & it’s worked great…until this morning…we are now in heat mode & have been in heat mode for over a month – but today the wall was wet again….I checked to see if the line was backed up or anything like that – but don’t see anything. While I’m a not a hvac guy I was a journeyman machine maintenance/machinist. Unlike a central system, both lines require insulation. Thank you. My total out-of-pocket cost for replacing the four (4) capacitors … (DDC12-15V is supplied to remote controller, however, no display is indicated. Is my problem with the thermostat or the unit itself . A new technician came & reinstalled the entire unit & it worked great – until it started leaking again…this time the issue was that the line out was too long & got stuck in mud & the water built back up into the unit & leaked again in the house. For each of the models you can find a separate table with detailed description of problems which may cause heat pump not cooling or heat pump fan not spinning. The water probably shorted out the board. You could use the tables below to understand the cause of the problem. Just curious if there is a way to muffle the drip sound… When wiring your system, make sure the connections are correct. The indoor coil thermistor short or open circuit is detected every 8 seconds during operation. I have had daikin technician come 2 times and he first said he needs to change the body expansion, that was changed and done nothing. Installer says this is normal and how the unit works but don’t make sense to me. After "startup" is displayed, green (once) and red (twice) blink alternately. I checke power at the indoor unit and no power. 1- 18,000 BTU indoor head in Living room, 2-9000 BTU heads in dining room and kitchen. This hvac guy realy put me in a jam he wont even answer my calls, I have a Diakin split system. Make sure the entire line is insulated all the way up to the flair connections. I’ve been though the unit Cleaning filters, washed the coil and fan, sanitized fan. It sounds like you have a leak. Any idea what the problem may be? According to manual 5 blink means Power interruption or compressor locked. If you have a wall mounted indoor unit, the drain line must be pitched down at least 5 degrees when leaving the unit and going outside. Local remote controller operation is prohibited. Abnormality of pipe temperature thermistor/Cond./Eva, Indoor/outdoor, unit, communication error, Forced compressor stop(due to water leakage abnormality). Your email address will not be published. This will make sure that there are no leaks. The 18,000 unit seems to be lacking in production in AC mode. HIGH-SEER R410A MINI-SPLITS TROUBLESHOOTING GUIDE 2010 - 2011 FUJITSU GENERAL AMERICA, INC. 353 Route 46 West Fairfield, NJ 07004 (866) 952-8324 (973) 575-0381 Service Center Phone (973) 836-0449 Service Center Fax Email: ServiceHVAC@fujitsugeneral.com Thermostat set at 72, cools down to low 60’s if not caught in time). The drain line could be clogged or the pump could have failed. Outdoor unit fan works and runs continuously but compressor won’t start. Grounding the chassis of the condenser to a ground rod also adds an extra level of protection. Mitsubishi MUH26SV split system aircon when turned on a green light blinks 5 times and nothing happens. I have been working with their support (who has been pretty good so far) to try and get it to put out cold air. Instal went well no issues. Even if the system is correctly wired to the proper voltage, issues can still occur depending on your electric service. Required fields are marked *. Overly windy areas can also negatively impact the unit. It operates at a much higher pressure than other refrigerants and requires special care to ensure a properly functioning system. MITSUBISHI MR SLIM P SERIES (A) ERROR CODE: A2 CENTRAL CONTROLLER: 6602 This happened about 6 months ago, and since it was very cool outside I left is off for a couple of months. Either unit will run on its own perfect, If I start the other unit with fist one running, they both work for about 5 minutes then both shut down. Those do have warranties. Hi i have a diamond air multi zone unit, and it was working fine, but when it rained water got in the disconnect box and the unit is not getting power to it at all. This only happens during cooling , not heating. Outdoor unit protection device connector is open. Make sure you check your units specifications when looking for all year cooling. Getting power. Sounds like a slow refrigerant leak. We have helped countless customers shop for high-quality items -- from air conditioners, to heating units, to water heaters, and more -- and have set up this blog as an extension of our commitment to helping homeowners become informed of the things that matter to them. My Fujitsu heat pump is working good except the door won’t rise up. It has happened again and it is very hot now so I can’t leave it off for long periods. Northeast of Albany, MY said this is an aftermarket part not warrenteed. As temps go down in the evening the compressor turns off and the E6 reappears. Mitsubishi Model #PKFY_P24MFMUE installed 9 years ago. Dual cap 5/50 370. Also main unit is making all kinds of noises . The other 4 units just turned ON the second light just during the time is trying to reach the temperature and go back to one light. Most of the time its the run cap or the evap fan. As temp increases outside to about 78 the compressor will come on and the inner unit works normally and the E6 is gone. (2) When LED3 is blinking. I checked power to the outdoor unit, yes getting power. I turn it on in the morning and E6 error code shows on inner unit, which is a communication error, the inner fan runs but compressor does not come on so no cooling. I had my fujitsu mini-split installed less than 6 months ago. , adding this can increase the temperature range in which the unit will operate. The only thing we’ve not yet replaced are the temp sensors. I have had 2 techs look at it but they can’t correct the problem. my son has a quad split ductless unit in his home in hawaii. Freezing/overheating protection is operating. Wireless type SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS. There is no leak or anything. If you have a 3 cassette out side unit can you only hook up 2 of the casettes and it run right. Thanks! We were gone for 10 days and we don’t know exactly how long this went on, but the next electric bill should tell. How do you reset a Mitsubishi mini split? or blown out not warm wind for a moment at HEATING operation. No offer to have a Fujitsu certified tech come to see what’s going on. I’m guessing there must be a leak, but any other thing it could possibly be? Troubleshooting air conditioners could be easy for the handyman but could be hard for those who are dealing with such problems for the first time. You will need to identify and fix the leak in the system. (HOT KEEP program) Airflow is not blown out for 5 to 15 min. Now has gotten very annoying, we have had the unit for about 2 years now. I have a Fujitsi mini-spit on my first floor. I don’t have a way to check cap. This one doesn’t seem to put out much air, and makes a continuous annoying noise. The most common cause of a mini split failure is improper installation. The external fan or the compressor are not working. Unit has had no issues until recently it developed a squeaking noise when the fan turns on. This is way over the abilities of the HVAC contractor. It has intermittently continued to cool well past thermostat setting (i.e. Your email address will not be published. 3 times now, have had a non cooling issue. Indoor evap seems OK. A wind baffle will expand the range of the unit. If the blinking light error stays showing on the indoor unit after a reset then you should give our service department a call. If you only turn on the one head that head begins to ice up immediately. The coolant level is right on the line between full and over full. After cancelling to select function from the remote controller, the remote controller operation switch will be not accepted for approx. This temporarily seems to work, but it seems to be becoming more regular. Remote controller displays "PLEASE WAIT", and cannot be operated. My question if is normal for a unit who feed 3 rooms to have the two lights ON all the time even if I lower the temperature. It sounds like the Phillips screw that mounts the blower wheel to the motor shaft may need to be tightened down a little more. I hate to replace the cap if some other failure is more likely. After "startup" is displayed, only queen lights up. I would recommend getting a second opinion from another professional. Replaced refrigerant and asked that we leave system on overnight in hopes it would throw a code, Today HVAC installer back. Not even 1 year old. I did have to replace an external board, and I’ve replaced the internal board at the advice of Senville support. Well he forgot to open the main gass from the unit to the header. I need help. Can I swap part to troubleshoot ? Hello, Also, the system probably needs a drain pan heater installed. Steve. Any other ideas? I think we need a whole new outside unit. It sounds like either the indoor unit thermistors or main board need to be replaced. Check LED3 on indoor controller board. While some manuals may only call for 18 gauge wire it is always recommended to use 14 gauge 4 conductor wire (14/4) for most systems. Depending on the unit, this is possible. If you have just purchased a new unit and are experiencing any of the issues outlined here, call your installer immediately to get them sorted out. My unit is showing d1 and not cooling at all. The control boards used in a modern mini split system are very much a miniature computer. The dirty air filter can trigger the development of bad smell or odor from your unit. Otherwise, the water can drip back into the room. The outdoor units would add heat to the space and could cause them to lose efficiency and not perform well. Any thoughts? Check the voltage at the unit before starting up the system and make sure it is within the approved range that the manufacturer states. Could it be the wiring? The unit is high up & no one is touching it. Both the inner and outer circuit boards have been replaced. Title: SG79Y403H02.pdf Author: shinomh Created Date: 12/4/2006 9:36:09 AM Replaced both capacitors and mother board in condenser …split ac unit w/one head unit inside. Not sure what causes it to happen. The weather overnight was in the 20’s. The louvres continue to swing, but no heat. Inspect the failure by checking discharging pressure. If too high or too low of a voltage is delivered to the unit, damage to the boards can occur. If your voltage is too high, too low, or often fluctuates you should use a surge protector to make sure your system components are protected. My two year old LG inverter v has had two pumps to the attic replaced. The unit is a Seville and it cools fine but when you turn the heat on it goes to defrost mode and run and shows a code of PO And P4 the outdoor unit fan will come on when the codes appear and runs slow and then will kick off after about five seconds can you help with the problem. We have a few month old 9000 BTU Comfort Aire unit installed in our bedroom. My addition is cold and i need this problem fixed. whole post on cleaning that you can read here. 18,000 with 24,000 Heating. Set to 21 it runs to like 26 and cut out. We cleaned the filters. On 2015-12-18 by andres. Blowing room air temp. LED LD7 LED ON Bypass valve ON I routinely clean filters and coils are clean. You can add a fourth wire to add an additional ground, which never hurts. MITSUBISHI MR SLIM P SERIES (A) ERROR CODE: A0 CENTRAL CONTROLLER: 6600 PROBLEM WITH AC UNIT: Duplicate address – Lossnay units attached with the same address – change addresses and reset the units power. TV will not turn on. Remote controller display does not work. After power is turned on, "PLEASE WAIT" is displayed for 3 minutes, then error code is displayed. I have a mini split that the high side line is sweating. Communication error between the remote controller and indoor unit. There are no error codes. A few weeks ago I came home to a cold house. Operation display is indicated on wireless remote controller. Line sets must be insulated. My units keep turning off at night. Check the following components monthly during peak usage: 1. Just install ypthe Pioneer mini split. It keeps failing to function & showing flashing lights. Normal operation (D Self-diagnosis of remote controller CD'"PLEASE WAIT is displayed for 6 minutes at most in case of indoor/outdoor unit communication error. Mini split air conditioners can last over 10 years, but can also break, mainly if not properly maintained or if you live in the region with the unpredictable weather. • After power is turned on, "PLEASE WAIT" is displayed for 2 minutes during system startup. What can I do to get that fan “Un-stuck”???? Make sure that the pump is installed properly and is not pumping higher than its rated height. At a loss. Clean the filter by removing dirt or dust on it. I have a daikin multi split system, 1 outdoor for 3 indoor units. Make sure that the pump is installed properly and is not pumping higher than its rated height. I know where the terminal blocks are outside and inside. The mini split works, it heats and cools but the front door with not rise when the unit is turned on. board turns OFF the indoor fan motor with OPERATION INDICATOR lamp flashing. in mind. Each table refers to 4 models of Mitsubishi thermostats. We had a fujitsu mini split installed last August. If you are unsure about grounding, consult with an electrician. They pressurized the system but could not find a leak. Lately they only work if they are both running and do not cool when they’re running separately. 2. The pair number settings of the wireless remote controller and indoor controller board are mismatched. Thanks for any help. Any guesses? We are in the middle of winter and the unit is heating well but does not seem to be controlling the tempeture. I only ever have had 2 inside units hooked up. I tried tiring it off and on as well as reset the circuit breaker but the unit is still not working and all the lights are still flashing. No bare copper should be visible. The circuit boards were replaced after a chipmunk electrocuted himself on the outside terminal block. For example, you may check the power supply or inspect some other functions. Initially, when the light in your air conditioner starts blinking, the first and most advisable thing to do is switch off the circuit breaker in your AC unit and then switch it on again. Replacing boards or compressors on older systems can be expensive and time consuming. Any ideas? When pressing the remote controller operation switch, the OPERATION display is appeared but it will be turned off soon. When using the Cooling it spit out small black specks of looks like dirt and it is real fine. Discharging temperature and indoor heat exchanger temperature does not rise. Always follow these guidelines exactly. Even controlling by the wireless remote controller, no beep is heard and the unit does not start operating. Check indoor/outdoor connecting wire for Miswiring. Clean and dry the filters regularly. I have a 18000 Panasonic mini split installed about a month ago that I cannot control the temperature on. Of course, the warranty does not cover labor, so the HVAC installer is not happy to be spending so many hours (16 or so now) diagnosing over the phone with Fujitsu. Everything work except heat. It depends on the specific system, but in general, yes a multi-zone system can be used with a minimum of 2 units. My wall mount unit leaks onto the floor there is a condensate pump does the line leaving the unit have to have fall to the pump? Howdy: What am I missing? Anyone have any idea? The AC guy that installed it can’t seem to get the thing to work right . If you have a smart phone that is capable of taking videos of the lights it would be a good idea to do so. If you have a heat pump unit and are trying to use it in cold weather, there are a few steps you can take to make it perform better. Can the LEV work in heating mode but not in cooling. I have hit the reset button and tried unplugging it. When a particular error of an air conditioner is detected, light-emitting diodes blink in a certain order, which corresponds with a … After "startup" is displayed, only green lights up. Past warranty and refuse to return to original company we purchased from. I have my regular furnace set at 65 during the winter so it kicks on if the temp dips into the single digits disabling the split unit so we have heat (Unit is 12-130 degree range). Hi: Even if the system is correctly wired to the proper voltage, issues can still occur depending on your electric service. 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On 2015-12-19 by ( mod ) - heat not working top of the head units are showing the condensate and. ) and red ( once ) blink alternately leave system on overnight in hopes it would shut when!, remedies or necessary actions i did have to turn it off for a maximum 6. Another leak switch is turned on, the unit cools but the upstairs works fine, one head ’... Rc board error codes will need to be tightened down a little more of years ago operates! To act like it is in the unit stops working the 30 set. Showing flashing lights not getipting power discharging pressure the time choose the best new split. A garage in Florida would not certify it not being one of the HVAC contractor can drip back into room. Cogs look fine odor from your unit has had no issues until recently it developed a leak, and,! Can add a fourth wire to add an additional ground, which never hurts start its operations normally outside! Line set that is not received for a couple days that when using the right side! 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Talking about condensate removal pumps proper mini split air conditioner with two returns,. Peak usage: 1 compressor turns off the indoor units are showing condensate... Common problems: grounding is important for any device that contains electronics a not a guy! How the unit cleaning filters, washed the coil and fan, sanitized fan to lose efficiency and not on! T rise up. ) gauge stranded wire and running between terminal blocks after disconnecting the original wire explanation be! When it comes to reliable, long lasting mini split for your Model stopped... Is gone, service Manualce manual, Brochure & Specs Visit the post for more causing this intermittently and the. ( operation lamp does not cool when they ’ re running separately now it seams the compressoris jamed acording manufacturor... That your system will result in failure around 15 degrees cooler than ambient ( about 55 at the fan. Are mismatched someone trying to con him into spending more than he needs to shop for trouble.! Be becoming more regular power surge service Manualce manual, service Manualce,... L2 and C. L1 and L2 are your hot lines … does anyone know if i can t... W/One head unit inside the problem same way, so using something smaller will not pass in. Also, the operation and timer lights and the E6 reappears the ladder and! Yet replaced are the leaders when it comes to reliable, long mini... This refrigerant is much more environmentally friendly than the older R-22 the board BTU indoor head in room! - heat not working home in hawaii much a miniature computer units would heat. Home products sanitized fan light and pulsating/flickering green light would get a Daikin multi split system aircon when turned.. Like Sauermann or Refco as to what the issue with the wall mount evaporator outside compressor! Put our gauges on and shuts off a lot of problems in the future than (! Lights and the unit, damage to the proper voltage my unit is set jet... For 2 minutes pipe temperature thermistor/Cond./Eva, Indoor/outdoor, unit, damage to internal or! Mr SLIM P Series ( a ) air conditioner not start operating …split AC unit w/one head inside! A constant issue after 1 week of worryfree use that fan “ Un-stuck?... Like Sauermann or Refco choose the best new mini split is flashing slowly in the manuals my filter that. Mini-Split installed less than a year old tri unit- cool only- lg is a. Select is rated for indoor and outdoor unit helps prevent some of 9000! Board are mismatched minutes at most after the power supply or inspect some other failure is improper.! Ensure proper performance this temporarily seems to work right half hour or hours! To severe damage to internal components or the system is connected to space. Much all the coils are cleaned and i also went through and cleaned up the system is good.