The computer board has a continuous green single flash however the red LED light doesn’t come on like the other rooftop unit on the same building does once it kicks on and takes off running. 1. I just replaced a simplicity board on a 40 ton millennium RTU because it was no longer calling for the compressors to start. What is the model and serial number of the unit — this will determine the controls in the unit and then I can give yoou better information. I would suggest disconnecting the blower contactor from the board, recycle power, push the test reset button once and see if everything works then. disconnect the compressor and blower contactors one at a time off the board. If you only have 19 volts at the board, you need to see where you are losing voltage. I can also not get the unit to reset. There is no continuous flash on the heat delay light — that would be a code. That parameter can be changed with the OPTIONS button on the board and following the instructions in the manual. The unit was working when I arrived Friday afternoon. Then take the P10 plug off the board (under the relays). How many times is the D18 LED flashing? I know the only thing on the board with a 60 second timing is the LP switch but i am sure it is closed because i even tried to jumper the pins but nothing works. Y1 calls for cooling and goes back thru the economizer control. Hopefully this little guide will assist you when working on our products and give you the proper direction so you do not unnecessarily condemn boards. When I set it to cool I am getting nothing at all. The units are completely assembled on rigid, permanently attached base rails. As I said in a previous response — there is no fault 27 even with expansion boards. Infra Red receiver on-unit exposed to strong light source. setpoint is at 10% min damper position and D the loweset temp setting to turn Econ on. More info.. Unit Runs with T stat removed from base. Troubleshooting for your packaged system will vary based on its heating and cooling configuration. If the conditions are right, it goes into free cooling and let’s you know that with the flash code 11. I have a new Honeywell WIFI thermostat installed in my house to control my York Affinity 9C that is used for both heat and cooling. A “green” continuous flash on the upper LED is normal operation Work on the thermostat- check the settings (and change) or potential defects (and replace). The York furnace code is 2 Red Flashes for open pressure switch contact are stuck in the closed position. A listing of York, Carrier, Payne, Trane, Luxaire, Coleman or payne failure codes listed on furnace controls with explanation of what the codes mean "gray furnace man troubleshoot and repair advice" troubleshoot no heat for electric, gas, oil, heat pump furnaces. Every thing is ok. Go through this comprehensive York air conditioner problems troubleshooting guide to learn what to do to restore your unit's normal function. Check the refrigerant level and recharge to the specified amount/charge. does it go into a HARD lock-out every time? Remember that the run capacitor won’t have continuity once tested if dead. A bad contactor can cause a voltage drop that the board sees as an open safety and give you a fault code 9. S#NoN9426823 Single flash on heat delay and the #1 led lit is normal operation. You need to verify the pressure to the switch. The First initial call was a bad ventor motor. I’m sorry for my English. #ZJ037N09P2AAA5A which went into a fault. Verify your temperature rise. YORK® Predator® units are convertible single packages with a common footprint cabinet and common roof curb for all 6-1/2 through 12-1/2 ton models. The board has been replaced, We have also taken a board from a running unit. Malfunction and Protection Code Table. As a new tech, this is something you should always remember to provide as control systems change in units. gas pressure high. Therefore, it is nearly impossible to describe every flash code … Thanks for your time. You have an improper thermostat setting or it might be defective (the entire component). Either way, find out the problem before proceeding. Single Stage T- stat I believe. YORK® Packaged Equipment Comfort and Quality in One Package. Correct, field installed Econ. Plz tell me . blower is on and running. PREDATOR DM120 air conditioner pdf manual download. If the code continues, a jumper wire can be placed temporarily across each switch in turn to isolate each switch. what lights are lit on the board? It’s 80+ degrees out and saying compressor lockout due to economizer but the economizer is not running. What do I look for? This completely by-passes the econ. We turned the unit off at the thermostat and waited, turned it back on and now we are getting three flashing lights, and the heat is still not coming on. If you leave it alone, will it try 3 times before locking out? After replacing the board the compressor are now running but the display on the board keeps blinking 13 then 14 and repeats. I will check and keep you updated. 2. Then turn on the power and see if the unit starts. Hello- I am getting 9 flashing red leds on the board only. Try that? Infra Red signal does not reach unit. All economizer equipped units should have a 2-stager thermostat. Your help would be greatly appreciated. Sorry i meant to say i do hear a little water in the ventor motor. My husband checked and at first there were two flashing lights. I am getting an error code 28, indicating lock out due to fan overload trips, but I don’t know how to correct this. ( Log Out /  Maybe they had a phase problem or power surge. If you are experiencing nuisance FAULT CODE 9 on the control verify your manifold pressure is correct. LAST ERROR – When this button is pressed and released one time within five seconds, it will flash the last five flash codes on the board’s LED. 1. Packaged Heat Pump. I believe “heat delay” is a 2 which is a 5 minute anti short cycle delay. Could be flame failure,open limit,cycling on limit,roll out switch etc. With a 3-150 ton capacity range and efficiency ratings as high as 17.5 SEER, YORK® Commercial Packaged Rooftop Units in both A/C and packaged heat pump models balance minimized installation and operating costs and come Smart Equipment enabled. Find out how we leverage our unparalleled residential dealer network and world-class commercial support services to lead the industry. ( Log Out /  User manuals, York Heat Pump Operating guides and Service manuals. Hoping sombody could give me a quick hand. just continues to run.. thanks. Under normal conditions, your heat pump periodically switches to air conditioning mode for a few minutes, which heats up the outdoor coils enough to melt any frost and light ice that has accumulated. I would suggest you call your installer and have them check it out since, if this is a new unit, it should be under warranty. Again, your local distributor should have technical support on staff to assist you. The freeze stat opens at a coil temperature of 26 degrees and closes at 41 degrees. Fault Code 24 points to the violet colored furnace fuse. Packaged Gas/Electric. ADD up the numbers and that is the flash code. Recycling did not work. Check out my posts on Economizers. All piping, refrigerant charge, and electrical Please provide the model and serial and I’ll see if I can help. When I checked the furnace I was getting a amber 1 flash light. View & download of more than 6155 York PDF user manuals, service manuals, operating guides. At YORK®, comfort is more than a feeling – it's a promise: to innovate, to assure and, most of all, to deliver. Any input?? I already replaced the board per York but problem still persists any info on this . Is there a jumper between them? The serial is n1c185692 yes I have they said they will get back to me . I would suggest you contact your York Dealer and have them check out the unit. If tripped, check the amp draw, voltage,( see my post on voltage imbalance), static pressure, etc. Will Give it a shot first thing in the morning. Hope this helps. The unit could also have been over f ired. This is a NORMALLY OPEN switch that closes at 45 degrees and opens at 55 degrees. Both are designed for outdoor installation on a rooftop or slab. Indicates no 24vac at the GV terminal of the board during a call for heat or no 24vac at the limit terminal anytime the board is energized.This fault code basically says there is a problem in the heating section. Whether you're using the furnace in winter or the air conditioner in summer, the filter cleans and circulates a huge volume of air through the system. The issue im having is 2nd stage heating not coming on. Get closer to unit. Troubleshoot the boards and see the one needing replacement (you usually need to replace them). YORK® Model XN units are single package heat pumps equipped with optional factory installed electric heaters. If one of your contactors is drawing high amps, it can cause the the safety to show open. are there any flash codes? the economizer was field installed. I’m an inexperience tech I’m on my 6th month in the trade, thanks for the blog. 10 years, I was an engineer in the service of York-Ukraine. The run capacitor is having issues or it’s blown making the compressor not to run. Heating flash codes may just be due to programming outdoor temp lock outs. It was fine until yesterday. If you have 24 VAC at TH and R1, disconnect R1 off the ignition control and put a jumper between TH and R1 and recycle the power. If yes, move to the remaining steps…. If a freeze stat were to trip 3 times within a two-hour window, the control locks out CR2. You need to check all wiring and sensor locations. The fan on and off delays can be field adjusted by pressing the correct combination of buttons on the UCB. They said they had reset it by the disconnect. I guess I will take a wait and see and see if it happens again. What flash code are you getting? The unit could also have been over f ired. A blown fuse may indicate a short in the 24 Volt wiring. I reset it, by taking off the bottom door and putting it back. These units can be equipped with factory or field installed electric heaters for heating applications. I turned the heat up and I was able to get a flame going. TEST/RESET – When this button is pressed and released one time within five seconds, any anti-short cycle delays (ASCD) will be by-passed for one cycle. What does code mean: #1 Red LED is lit and heat delay LED flashes once. If pressure is correct and the switch dies not close or closes and reopens, then you possibly have a bad switch. Board part # S1-33109150000. The unit has a problematic board (culprits could be its main control board, temperature control board, etc.). Also for: Predator dm150, Predator dm090. Clear if need. Check for obstruction between unit remote control. I get the listed flash codes, but why am I getting 27 flashes? If the limit trips multiple times during a call for heat, the blower will lock on. also what I have found code 9 to be from air flow issues. Economizer can be by-passed (see post on economizer) or the board would have to be reprogrammed to eliminate the economizer. YSC060 air conditioner pdf manual download. Smart, Outdoor Packaged Rooftop Units Featuring a capacity range from 3 to 150 tons, our single-packaged Rooftop Unit from Johnson Controls is easy to customize with fast installation, low operating costs, the flexibility of heating and cooling options, and our Smart Equipment Controls (SEC) package. you should then have 24 volts at C1 & C2 pins on the board with the plug off. I ended up with a green steady 1 flash light, which I understand means that the furnace and thermostat are trying to communicate. When the compressor is off in this mode, the control displays a FC2, indicating an active anti-short cycle timer. Infra Red signal does not reach unit. Your blower should stop. I apologize — heat delay is saying you have a lock out and not anti short cycle. If problem is just with Y1 call — look at the economizer. Check for loose or even a broken belt and repair, if necessary. 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