This alarm is generated when the resistance in the Space Temperature Offset circuit is greater then 20,000 ohms. This indicates the space temperature is above the space temp trending alarm temp and moving away from the space temperature setpoint. The type of protection varies depending on the type of compressor used. Supply air temperature sensor has failed open or shorted. The unit has been in a given mode of operation for 10 minutes. Door locks, power programmable with lockout protection; Driver Information Center monitors 26 various systems including, Vehicle Information Menu (oil life, tire pressure, standard/metric units) and Trip Information Menu (trip 1, trip 2, fuel range, average fuel economy, instant fuel economy, average vehicle speed) and compass display This alarm indicates the IAQ (CO2) sensor is out of range. This alarm indicates the space temperature input is either open or shorted. Stock #M533765 - New 2021 Chevrolet Blazer Premier has an internet price of $46,519. The problem is that there are no rules when a mistake occurs, sometimes it works for a few days, sometimes for a few hours. If after the three retries the Unit Controller will lockout heating and cooling operation. the circuit opened three times within a 2-hour window. Likewise if the low pressure switch opens for system 2, (compressors 2A, 2B), opens it will generate both an 11 and 12 alarm code. 19/26 City/Highway MPG Price includes the following incentives, some customers may not qualify. ZH090N10B4CAA4B. Also … Is your thermostat set in the cool position (or warm for winter heat pump operation)? Since tandem compressors are used there is a single low pressure switch for system 1 and one for system 2. 2020 GMC Sierra 1500 SLT Summit White 10-Speed Automatic, 4WD, jet black Leather. Comment:*document.getElementById("comment").setAttribute( "id", "a56da7bf211aa46e7a1134ee6b49632f" );document.getElementById("b3ce2a7185").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment. When the alarm becomes active the unit stops all operation and locks out. Compressor system 2b locked out on compressor motor protection module. Make sure the furnace switch is in the ON position. This is not an alarm but rather an indication the unit has been placed in a smoke purge mode. the display will indicate –40.0. This website uses cookies to improve your experience while you navigate through the website. DRIVER CONFIDENCE II PACKAGE includes (K4C) Wireless Charging, (UV2) HD Surround Vision, (DRZ) Rear Camera Mirror, (KSG) Adaptive Cruise Control, (UGN) Enhanced Automatic Emergency Braking, (HS1) Safety Alert Seat and (T4L) LED headlamps ; Defogger, rear-window electric; Door locks, power programmable with lockout protection Check the SSU light switch on the gray box located at the furnace to make sure it is in the ON position. Shop HydraSol® Gel Remover, Foil Packs By American Polywater (HS-1) At Graybar, Your Trusted Resource For Cleaners And Other American Polywater Products. Compressor system 1b locked out on compressor motor protection module. The issues we are having are controls issues. Door locks, power programmable with lockout protection; Driver Information Center monitors 26 various systems including, Vehicle Information Menu (oil life, tire pressure, standard/metric units) and Trip Information Menu (trip 1, trip 2, fuel range, average fuel economy, instant fuel economy, average vehicle speed) and compass display the display will indicate –40.0. An example would be a low incoming The display will show a value of –40.0° F. The space temperature input is at ST and GND of the P6 connector. Door locks, power programmable with lockout protection; Driver Information Center monitors 26 various systems including, Vehicle Information Menu (oil life, tire pressure, standard/metric units) and Trip Information Menu (trip 1, trip 2, fuel range, average fuel economy, instant fuel economy, average vehicle speed) and compass display Dirty filter switch has closed indicating the filters need replaced. Is the temperature setting on the thermostat set higher than the thermostat's indoor temperature? This indicates an economizer minimum position alarm. This indicates the duct static has not risen quickly enough in a vav unit when the supply fan is energized. Is the blower motor in your furnace or air handler running when your thermostat is activated? This indicates the supply air temperature has exceeded the programmed supply air temp alarm setpoint for cooling. Check the resistance between the two CV/VAV terminals and take appropriate action. I have a problem with the roof top device ARH-075-AB, code S661752173. Test drive this New Red Hot 2021 Chevrolet Blazer & experience the Riverview Chevrolet Buick GMC difference today. If the fault reappears replace the Unit Controller. The control board will make three attempts to ignite. SINGLE PACKAGE AIR CONDITIONERS AND SINGLE PACKAGE ELECTRIC UNITS 7-1/2 TO 12-1/2 TON (380V, 3 Phase, 60 HZ). Contact us online or call for more information. Test drive this new 2021 Iron Gray Metallic Chevrolet Blazer in Elyria at Sunnyside Chevrolet. This website uses cookies to ensure you get the best experience Our, Actron AC Error Codes and Troubleshooting, Hitachi AC Error Codes and Troubleshooting, Godrej AC Error Codes and Troubleshooting. The outdoor air is not 20.0° F or more warmer then the “SUPPLY AIR TEMP ALARM FOR COOLING” set point. Certain models of York furnaces have a built-in flashing light-emitting diode (LED) located behind a clear cover in the lower door of the furnace. This can be the result of a faulty Duct Static Pressure Transducer or in the transition from an unoccupied to occupied mode if the VAV boxes are wide open. Second stage heating is locked out on limit switch trips. This alarm indicates the return humidity sensor is out of range. Recent Arrival! The display will show a value of 40.0° F. The return air temperature input is at RAT+ and RAT- of the P11 connector. I reset the board and it runs for about an hour then locks out on 9 flashes To make a long story short, I replaced the board with new board part number 33109150002. Return air temperature sensor has failed open or shorted. Outdoor Air Temperature Sensor Alarm (22). Red 2021 Chevrolet Blazer RS 3.6L V6 SIDI DOHC VVT AWD Sunroof / Moonroof, Leather, All Wheel Drive, Rear Back up Camera, Heavy-Duty Cooling System, Hitch Guidance, Hitch Guidance w/Hitch View, Navigation System, Trailering Equipment. If the Unit Controller is calling for the operation of the Are the air registers (supply or return ducts) plugged? Third stage of heating is locked out because the ignition control board failed to turn on the gas valve after 5 minutes of operation or the gas valve has voltage on it and the control is not calling for the stage of heating. the circuit opened three times within a 1-hour window. The supply fan performs a Fan Delay Off when the limit re-closes. The disconnect switch is usually a small metal grey box mounted on a wall near the outdoor unit. Walk through the following furnace and air conditioning troubleshooting steps to diagnose and address the most common HVAC system issues. If after the three retries the Unit Controller will lockout heating and cooling operation. When this occurs the Unit Controller will switch economizer operation to Dry Bulb. This indicates the 24-volt supply circuit has dropped below the allowable level. when this occurs, the unit controller switches the economizer type to dry bulb. This alarm indicates the outdoor humidity sensor is out of range. Compressor system 2 (compressors 2a, 2b) locked out on low pressure control. A blocked filter can cause your unit to shut down due to lack of proper airflow. The Unit Controller monitors this circuit anytime the supply fan is operative. The input to the control originates at terminal FSI, wire 388. GMC Certified Pre-Owned Details: * Roadside Assistance * Powertrain Limited Warranty: 72 Month/100,000 Mile (whichever comes first) from original in-service date * Warranty Deductible: $0 * Transferable Warranty * 172 Point Inspection * Limited … This alarm indicates the call for supply fan operation has been terminated and after 90 seconds of supply fan operation the switch remained closed. This LED flashes a fault code in a series of green, amber or red light flashes to signal normal operation or system problems. Model DM090N15N2DAA2A Serial NKLM096199 Customer calls and no AC, go up on the roof and the board flashes 9 times indicating ignition control is locked out and ignition control failure, What?? One of my Kmart's got 6 new RTU's last spring and we are still having issues. It is mandatory to procure user consent prior to running these cookies on your website. If no voltage is present replace the sensor. This alarm indicates the duct static pressure has exceeded the Duct Static Shutdown Setpoint. Try recycling power to the control. The alarm indicates the hydronic freeze stat switch has opened. this has to occur 3 times within a two hour window. | View ourÂ. The IAQ sensor input is at terminal DV+ and DV-. If none of them is successful, the system will lock out and retry after an hour. the circuit opened three times within a 1-hour window. (F): N/A. All Rights Reserved. The Unit Controller will retry the fan output every 30 minutes for three retires. Contact us or drop by our dealership test-drive the new vehicles today! Your local YORK® dealer is your best source for helpful information, tips and advice about your home comfort system. All units have two compressors with independent refrigeration circuits to provide 2 stages of cooling. This alarm indicates there was a call for supply fan operation and after 90 seconds of supply fan operation the switch did not close. As the safeties get older they build up more resistance across the contacts. If the fault reappears replace the Unit Controller. this has no effect on the operation of the unit. Did the circuit breakers in the circuit breaker box (or electrical panel) trip to the OFF position? Door locks, power programmable with lockout protection; Driver Information Center monitors 26 various systems including, Vehicle Information Menu (oil life, tire pressure, standard/metric units) and Trip Information Menu (trip 1, trip 2, fuel range, average fuel economy, instant fuel economy, average vehicle speed) and compass display The control will fl ash the alarm but allow the unit to operate normally. Seven blinks signal a lockout due to lack of ignition. A microelectronics failure has occurred and the control is down due to a fatal fault. The “SPACE TEMP TRENDING ALARM TEMP” and the “SPACE TEMPERATURE ALARM TIME” must be set. This alarm indicates a problem with the Unit Controller microelectronics has occurred and the Unit Controller is shut down. You also have the option to opt-out of these cookies. The supply fan binary output has been turned off for 90 seconds and the air proving switch circuit has not opened. On the unit we checked all components, compressor, turbine, fans, switches, freon in the system, everything is in good condition. Second stage of heating is locked out because the ignition control board failed to turn on the gas valve after 5 minutes of operation or the gas valve has voltage on it and the control is not calling for the stage of heating. Visit our dealer locator page to connect with your local dealer. It was a 7.5 ton York gas pack. FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE 5167797-JTG-J-0218 TECHNICAL GUIDE Description ASHRAE 90.1 COMPLIANT Johnson Controls Series 10 J**ZH/ZJ/ZR units are convertible First stage of heating is locked out because the ignition control board failed to turn on the gas valve after 5 minutes of operation or the gas valve has voltage on it and the control is not calling for the stage of heating. All rights reserved. Clean CARFAX. The ignition cycle can run three times without the switch activating. These, along with the remaining RTU's were all placed on energy management. Supply Air Temperature Cooling Alarm (38). Instead, the Payne limit switch detects how many times a burner fails to turn on. Most units will light 3 times, then go into hard lockout. If this input is lost for 50 milliseconds, the control will shut down all unit operation. Thanks for helping me on error code 42… duct static pressure.. first tech said he changed the filters.. The Outdoor Humidity analog input is at OH+ wire 333 of the P6 connector and OH- wire 334 of the P6 connector. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. As some of you may recall, I am a qmt for Sears/Kmart. This indicates the unit cooling and heating operation is shut down because the unit is operating in a smoke purge mode. the unit will lock out. This alarm indicates the resistance between terminals CV/VAV and CV/VAV at the P7 connection is out of range. This indicates the cv/vav input is out of range. This indicates the supply fan binary output is turned on and the supply fan overload circuit is open. Necessary cookies are absolutely essential for the website to function properly. The first 12 alarms involve controls intended to protect the compressors. But opting out of some of these cookies may affect your browsing experience. FC 12 – Fan Overload Lockout. The 24 VAC source originates at the terminal FSP, wire 389. When this occurs the Unit Controller will switch the ventilation mode from Demand to Fixed Minimum. The display will show a value of –40.0° F. This alarm will have no effect on the operation of the unit. If your home comfort system isn't operating the way it used to, there are a few things you can check before calling for service. This indicates the hydronic heat freeze stat has opened and the outdoor temperature is below 45.0° f. All the stages of cooling have been on for 10 or more minutes. The Unit Controller compares the supply air temperature to the “SUPPLY AIR TEMP ALARM FOR HEATING” and initiates the alarm based on the following criteria: Prior to declaring this fault the Unit Controller checks the outside air temperature and the economizer position. 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