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. http://www.johnsoncontrols.com/buildings/hvac-equipment/rooftop-units. 10 years, I was an engineer in the service of York-Ukraine. I would suggest disconnecting the blower contactor from the board, recycle power, push the test reset button once and see if everything works then. Show the error heat delay,Lead leg and fan off. Find out how we leverage our unparalleled residential dealer network and world-class commercial support services to lead the industry. Download 827 York Heat Pump PDF manuals. Currently working on a York rooftop unit. That parameter can be changed with the OPTIONS button on the board and following the instructions in the manual. ( Log Out /  When you place a jumper across a limit, the power should be off. These units do NOT have Economizers. They think it’s the board again but I’m not to sure . Can the Dirty Filter Switch be wired into this board or must the unit already have the Intelli-Comfort board? In some of my previous posts, I’ve discussed “flash code diagnostics” and the fact that these should be used as a “guide” to finding out where the problem is located. I ended up with a green steady 1 flash light, which I understand means that the furnace and thermostat are trying to communicate. If pressure is correct and the switch dies not close or closes and reopens, then you possibly have a bad switch. Have you contacted your local distributor for support? Nearly every manufacturer has different flash codes. We have a York M# ZF240N24AAA1B S# N1A0506845 That will not let C1 or C2 energize on the board. I would suggest you contact your York Dealer and have them check out the unit. also is there a way to turn the economizer off? I’m only getting 88•F out of the supply. All 3 safeties are closed, LP, HP and FS. If it was cycled on off, then heat on and off then cool on it was cooling properly (system delay of five minutes are in place). C. Unit does not respond property to remote control command. If you leave it alone, will it try 3 times before locking out? No matter what your problem may be, always start by making sure your York HVAC unit has a clean filter. P and P1 are jumped together and R and OOC are jumped together. Replaced that. Our Air Conditioner trouble shooting guide will apply to your system. newer updated boards don’t have this issue if airflow good. With a single stae stat, if in the econ mode there is no call for mechanical cooling if the econ cannot keep up. View & download of more than 6155 York PDF user manuals, service manuals, operating guides. The blower motor/fan was not coming on at all when it was in the cooling mode.. Is it possible that my blower motor/fan is gone. Where is the set point (A,B,C,D dial) set? I’m sorry for my English. thank you so much, but what i still don’t understand is why is the heat still working if the limit is open, isn’t it spouse to shut the burners right away and blower stays on ? When I checked the furnace I was getting a amber 1 flash light. Change ), You are commenting using your Twitter account. just continues to run.. thanks. it powers up but then shuts down in about 10 mins and there are no codes flashing on board if i reset power it does the same thing. This option can be changed using the Simplicity Software. 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. The run capacitor is having issues or it’s blown making the compressor not to run. 1. The unit was working when I arrived Friday afternoon. If a freeze stat were to trip 3 times within a two-hour window, the control locks out CR1. Our Air Conditioner trouble shooting guide will apply to your system. Also for: Ysc120, Ysc060ad, Ysc072ad, Ysc090ad, Ysc102ad, Ysc120ad. Will Give it a shot first thing in the morning. Note: Auto mode operation – 77°F is the set temperature for cooling operation and 68°F is the set temperature for heating operation. Is there a simple way to over ride the fault? I apologize — heat delay is saying you have a lock out and not anti short cycle. 2. sensor fault. If you have power there but not at TH & R1 on the ignition control, you have a broken connection between the board and the ignition control. Large horsepower motors do not have internal overloads so they are part of the blower contractor. You do a service to our trade, when I retire I want to do the same. Within the manufacturers, the flash codes can be different from one furnace to the next. The unit has a problematic board (culprits could be its main control board, temperature control board, etc.). 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