iComfort® S30 Ultra Smart Thermostat Installation and Setup Guide 507536-08 10/2021 Supersedes 8/2021 Copyright 2021© Lennox Industries Inc.
Table of Contents Shipping and Packing List..........................................3 Operating and Storage Environment, Electrical and Dimensions..........................................3 Smart Hub External Component Locations, Button, LEDs, Terminals, Wiring Specifications and Sensor Wiring.............................3 External Component Locations................................3 Push Button Functions.............................................4 LED Indicators..........................................
Shipping and Packing List Smart Hub External Component Locations, Button, LEDs, Terminals, Wiring Specifications and Sensor Wiring Table 1. Packing List Quantity External Component Locations Description 1 iComfort S30 ultra smart thermostat includes a smart hub and HD Display 4 Mounting screws (#6 X 1.
Push Button Functions Table 3. Commissioning LED Indicators The smart hub push button switch has two primarily functions. • Rebooting: Press and hold the button for five seconds to reboot the smart hub. • Commissioning: Quickly press and release the button to start the process of creating a direct network connection between the smart hub and mobile device running the iComfort Mobile Setup application.
Table 4. Communication Error Troubleshooting (HD Display to smart hub) Possible Connection Issues S30 smart hub - System Status LED One communication wire at the smart hub COMM BUS A or B terminals is disconnected. Flashing Magenta LED Both communication wires – at the smart hub COMM BUS A or B terminals are reversed. Flashing Magenta LED Power wires at smart hub 12VDC + and - terminals are disconnected. Flashing Magenta LED.
HD Display External Components Sensor Wiring The following diagrams in this section illustrates the basic Lennox control wiring for all compatible components. Discharge Air Temperature Sensor (DATS) Proximity and Ambient Light Sensors The optional discharge air temperature sensor (DATS) (88K38) wiring distance to the iComfort S30 should not exceed 150 feet (45 meters) when wired with minimum 22 #AWG (recommend 18 #AWG) dedicated 1-pair thermostat cable.
Reducing Electrical Noise Application Wiring Communicating systems requires four thermostat wires between the HD Display and smart hub. Four wires are also used between the smart hub and indoor/outdoor units as well. When a thermostat cable with more than four wires is used, the extra wires must be properly connected to avoid electrical noise. The wires must not be left disconnected. • Use wire nuts to bundle the unused wires at each end of the cable.
For 2-Stage operations place jumper between Y2 Out BL and Y2 Y2 OUT BL DATS (Optional) +- AB ODT - B A + COMMBUS ACC1 ACC2 + A B - HD Display Subbase 3 FLOAT Switch DH DH NO 2 Communicating Furnace Unit SPDT RELAY 2 NC ཱི 3 Smart Hub Gh Rf Cf Gs W Y HVAC EQUIP . NC NO ཱ Figure 5.
DOOR” ON DAMPER CONTROL MODULE TO CONNECT TO THE INDOOR UNIT. OATS (Optional) IN-ZONE THERMOSTATS iComfort Indoor Unit - To iHarmony To indoor unit To Smart Hub If unable to connect two wires to indoor unit terminals then pigtail wiring as exampled here. TST TS TAT INDOOR + A B COMM BUS ACC1 ACC2 + A B - HD Display Subbase DATS IHARMONY ZONING SYSTEM S30 Smart Hub DATS (Required) If TSTAT terminal is present, DO NOT use.
24VAC UV Light Applications: In any Lennox communicating system, the indoor unit will NOT have adequate power to to run the 24VAC UV light application. An additional transformer will be required. UV light wiring connections are independent of the HVAC system operation (refer to UV light installation instruction.
Lennox Communicating Indoor Unit Lennox Ventilation Control System (LVCS) Smart Hub 26L56 CURRENT SENSING RELAY - B A COMMBUS A B - + ACC1 ACC2 + OUTDOOR TEMPERATURE SENSOR HD Display Subbase VENTILATION DAMPER 24VAC LVCS DAMPER TRANSFORMER EAC/ACC 120VAC • Set LVCS cycle time to one hour. • Set ventilation time to 60 minutes.
LENNOX COMMUNICATING INDOOR UNIT LENNOX COMMUNICATING FURNACE UNIT (SLP99, EL296 and SL280) DS CUT R-DS W914 FOR FLOAT SWITCH OPERATION, CUT R-DS. LENNOX COMMUNICATING THERMOSTAT OR DAMPER CONTROL MODULE R LENNOX COMMUNICATING INDOOR UNIT CONVENTIONAL OUTDOOR UNIT (1 OR 2 STAGE) LENNOX COMMUNICATING OUTDOOR UNIT FLOAT SWITCH CONVENTIONAL TERMINALS LENNOX COMMUNICATING INDOOR UNIT HEPA BYPASS FILTER X2680 HEPA INTERLOCK KIT TOR COMMON WIRE THROUGH CURRENT LOOP.
Indoor Unit Controller PureAir S HRV/ERV Terminal Block HI Single wire to terminal “C”. ACC1 ACC2 LOW COM ON NO YEL NC GRN BLK COMMBUS + A B - RED Unused wires MAG-MOUNT Figure 12. Communicating Indoor Unit and PureAir S SMART HUB Wire Jumper required between ON and RED terminals. ACC1 is always low-stage for single- and two-stage ventilators.
• Smart hub antenna should be positioned such that it is roughly vertical, no matter the orientation of the smart hub, itself. • Do not install the smart hub on the indoor unit, duct work, or other equipment that could induce vibration in the smart hub • Do not install the smart hub on or near large metal objects. This could adversely affect the range and directional coverage of the smart hub Wi-Fi signal.
3. For low voltage wiring connections use diagrams in section titled “Application Wiring” on page 7. IMPORTANT Seal wire hole in wall to prevent cold or hot air from affecting temperature sensor in HD Display. HD Display Installation Installation 6. Strip 1/4” (6 mm) insulation from end of each wire. Use the following procedure for installation of the subbase where existing thermostat wiring does not exist: 1. Unpack the HD Display and subbase. 2. Detached subbase from HD Display body.
NOTE: If the HD Display is removed from the subbase base, the HD Display will shut down and will not be able to communicate with the system. System can be controlled from mobile devices or consumer/dealer web portals once registration has been completed. Insert in hole until flush with wall. Drill Holes 5. Do not remove the label covering the HD Display screen until after power is applied to the system.
• Disconnect any communication wiring between the smart hub and indoor unit prior to electric heat discovery. • The air handler control must be in idle mode (decimal blinks at 1 Hertz—0.5 second ON, 0.5 second OFF to use the following procedure. 1. Select field test mode—press and hold the push button until solid “–” appears; release button. Display will blink. 2. Push and hold button and wait for the display LED to show “H” (capital H), then release the button. 3.
10. You can use the information provided in “Commissioning (Using the HD Display)” on page 19 to complete the commissioning process using the iComfort Mobile Setup application. 11. If the system has not been commissioned it will go to commissioning screen automatically. If the system has already been commissioned it will go to dealer control center. 12. Once the commissioning is completed, exit the iComfort Mobile Setup application. 13.
Commissioning (Using the HD Display) Apple HomeKit Wi-Fi Accessory Configuration A pop-up screen will appears providing instructions on how to connect the thermostat to the home Wi-Fi network using an Apple IOS device. If you wish to use this method to configure the unit for Wi-Fi and Apple HomeKit, then refer to the provided user guide for additional instructions. The following procedures are written for commissioning the system using the HD display interface.
3. Select time and date which includes time, date, time zone and daylight savings time (ON/OFF). 4. Select temperature unit (Fahrenheit or Celsius). 5. Once completed touch continue. » 1 or 2 Speed ERV (energy recovery ventilation) » 2 or 2 Speed HRV (heat recovery ventilation) Once completed touch done which will display the equipment found screen. There the additional non-communicating equipment will now be displayed along with the iComfort equipment. Once completed touch continue.
• Cooling Circulation Airflow (blue) which includes total, assigned, minimum and maximum airflow. verify airflow per zone blower circulation airflow assigned airflow 1900 cfm cooling airflow heating airflow maximum airflow 915 cfm assigned airflow 1900 cfm maximum airflow 800 cfm master bedroom 190 study 190 assigned airflow 1900 cfm Select the object for master bedroom.
Dealer Control Center This menu provides access for the installer or service technician to perform various functions. Advance equipment configurations, notifications, tests, diagnostics, installation reports and general information about the system. To navigate back to the dealer control center, touch on the Dave Lennox icon when available on the top left-hand side of the screen.
Equipment Parameters Selections listed in this section are dependent on system hardware configuration. Not all options listed in this section will be available. NOTE: When changing the default settings for any parameter, there is a possibility that it will affect the settings for another parameter. If this happens, a pop-up message will be displayed listing the other affected parameters and their new automatically set values. The following is a complete list of all possible parameters listed under System.
Table 6. Smart Hub Parameters Parameter (In alphabetical order) Low Balance Point Description Setting used to prevent the heat pump from heating the structure. (Alert 18 - Minor - Notification only - The outdoor temperature is below the level where the heat pump is programmed to heat the home). Range is -20 to 72°F (-28.89 to 22.22°C). Default is 25°F (-3.89°C). Adjustments are in increments of 1°F (0.56°C).
Table 6. Smart Hub Parameters Parameter (In alphabetical order) Description Electric Heat Stages During Defrost Can increase or decrease the number of electric elements to come on during a call for defrost. (Thermostat will have a demand for heat.) Range is 0 to 5 electric heat stages. Default is 2. Adjustments are in increments of 1.
Table 6. Smart Hub Parameters Parameter (In alphabetical order) Description HP Heating Mode (Lennox Variable Capacity Heat Pumps) Options are Normal and Comfort. Default is Normal. The normal setting heats the home to the desired temperature setting. Modify the heating comfort mode to limit minimum compressor speed to 60 – 70 percent range and/or adjust comfort mode CFM. • Normal is when the heat pump will heat the home will providing the highest efficiency.
Table 6. Smart Hub Parameters Parameter (In alphabetical order) Description Understanding Modulating Step Change and Steady State PI Gains Each of these terms has a multiplier (or gain) associated with it called the proportional gain and the integral gain respectively and affect responsiveness and stability • Standard is a moderate gain suitable for nearly all installations.
Table 6. Smart Hub Parameters Parameter (In alphabetical order) Description Number of Gas Heating Stages (SLP98V only) Number of selectable stages when Gas Heat Control Mode is set in “Staged” mode. Options are 1 through 4. Default is 4. Outdoor Temperature Reading Calibration This will allow for adjustment to the outdoor temperature display when the display temperature is off. Outdoor sensor is required. Range is -10 to 10°F (-5.56 to 5.56°C). Default is 0°F (0.0°C).
Table 6. Smart Hub Parameters Parameter (In alphabetical order) Smart Alert Enable Description Options are disabled, conservative, medium and aggressive. Default is disabled. • Disable - There is no monitoring of Smart Alert Enable. • Conservative - The system will wait longer to display any Smart Alert Enable alarms. This options allow for a minimum chance for false alarms being shown. • Medium (default) - Extensive testing by the Lennox development team to minimize the number of false alarms.
Table 6. Smart Hub Parameters Parameter (In alphabetical order) Stage Delay Timers (2 through 6) Stage Differentials (First) Stage Differentials (2 through 6) Description Second through Sixth Stage Delay timer (where applicable) - If staged delay timers are “Enabled”, the default is 20 minutes but can be programmed from 5 to 120 minutes in 5-minute increments. If the first stage fails to advance the ambient temperature toward the set point by 1.0°F (0.
Table 6. Smart Hub Parameters Parameter (In alphabetical order) Description Ventilation High Outdoor Temperature Limit Parameter range is 60 to 115ºF. Default is 100ºF. Can be adjusted in increments of 5ºF. While the outdoor temperature is equal to or higher than the setting for Ventilation High Outdoor Temperature Limit, ventilation does not run.
Table 6. Smart Hub Parameters Parameter (In alphabetical order) Description ASHRAE Infiltration Credit Parameter range is 0.0 - 200.0 CFM. Default is 0 CFM. Can be adjusted in increments of 1.0 CFM. ASHRAE House Floor Area Serviced by This Ventilator Parameter range is 500.0 - 5000.0 square feet. Default is 2500.0 CFM. Can be adjusted in increments of 100.0 square feet. The formula for calculating how much ventilation is required is: (Total square footage of the home/100) + (number of bedrooms+1) x 7.
Table 6. Smart Hub Parameters Parameter (In alphabetical order) Description Zoning Anticipated Discharge Air Temperature Adjustment This parameter setting compensates for a rapid change of the discharge air temperature due to fast changing conditions. It examines the change in the discharge air temperature for the previous two minutes and extrapolates or looks forward by the number of seconds set in the parameter and uses this as the DATS value for staging.
Table 7. Smart hub Parameters - Heat Cool Stages Locked In Cooling (1- and 2-Stages) H/C Stages Locked = Disabled 1st stage OFF 1st stage OFF SP -0.5 2nd stage ON Stg2 Differential Stg1 Differential 2nd stage ON Stg2 Differential SP +0.5 SP SP +1.0 SP +1.5 1st stage ON 2nd stage ON 3rd stage ON 3rd stage OFF Stg3 Differential H/C Stages Locked = YES SP +2.0 2nd stage ON SP -3.0 SP -2.5 Stg1 Differential 2nd stage OFF SP -2.5 POINTS: SP -3.0 2nd stage ON SP -2.5 SP -2.0 SP -1.
Table 7. Smart hub Parameters - Heat Cool Stages Locked In Heating - Dual Fuel - 3 Stages (2 compressor / 1 backup) H/C Stages Locked = Disabled 1st stage ON 2nd stage ON 3rd stage ON 2nd stage ON SP -3.0 SP -2.5 Stg1 Differential 2nd stage OFF 1st stage ON 2nd stage ON 3rd stage ON 4th stage ON 1st stage ON 3rd stage ON H/C Stages Locked = Disabled Stg3 Differential H/C Stages Locked = Enabled POINTS: SP -3.
Table 8. Heat Pump Parameters Parameter Defrost Termination Temp (Single and Two-Stage Lennox Communicating Heat Pump Units) Description This is the temperature that defrost mode will be terminated. In dual fuel applications (furnace and heat pump), defrost tempering is automatically enabled and operates as follows: • Furnace will run for 75 seconds ON then after 90 seconds OFF for two cycles. • After the first two cycles, the furnace will run for 60 seconds ON then cycle OFF for 90 seconds.
Table 8. Heat Pump Parameters Parameter Description Low Normal HP Heating Airflow (Lennox Variable Capacity Heat Pumps Only) Thermostat values shown are defaults. This value can be adjusted up or down to meet each application requirements. The range is 450 - 2150 CFM. Default is dependent on unit capacity with incremental adjustment of 25 CFM. Max Defrost by Weather (Single and Two-Stage Lennox Communicating Heat Pump Units) Options are off and on. Default is off.
Table 10.
Table 11.
Table 11. Furnace Parameters Parameter Description High HP Airflow Range is 800.0 to 1100.0 CFM. Default is 967.0 CFM. HP Indoor Blower Off Delay The range is 0.0 - 60.0 seconds with a default setting base on equipment type match-up. Adjustment are increments of 5 seconds. Default is 45.0 seconds. HP Indoor Blower On Delay The range is 0.0 - 30.0 seconds with a default setting base on equipment type match-up. Adjustment are increments of 5 seconds. Default is 0.0 seconds.
Table 13. Thermostat (HD Display) Parameters Parameter Description Outdoor Temperature Source Options are off, Internet (AccuWeather) or sensor. Default is Internet (AccuWeather). Proximity Control Options are ON and OFF. Default is OFF. Is used to wake-up the display from screen saver mode when motion near the HD Display is detected. Reset thermostat Resets the thermostat settings to factory default. Screen Locked Options are unlocked, partially locked and locked. Default is unlocked.
Table 15. Utilities Parameter Description Restart smart hub Restarts the smart hub. Re-configure System Re-configure HVAC system. Reset HVAC Equipment Resets all HVAC equipment. Factory Reset Thermostat Resets thermostat to factory default settings. Factory Reset smart hub Resets smart hub parameters back to factory default. Tests Select Test Mode is the next screen to appear. Your options are automated tests or manual tests. Select the desired option and select apply.
4. Temperature unit (Fahrenheit or Celsius). 5. Once completed press continue. and indoor humidity. Under equipment, system, indoor/outdoor and zoning model number, serial number and firmware information is displayed. Other menus items include system indoor and outdoor units and zoning control parameter settings. Home Address On this screen general information needs to be verified or changed. Touch any line item to change its contents.
Advanced Dehumidification Descriptions Table 16. Dehumidification Control Modes of Operations Mode of Operation See table 1 for detail information concerning system operations when using Normal, Max or Climate IQ settings. Option Variable Capacity Outdoor Unit: If at the start or during a cooling call, the humidity level is below the relative humidity set point by more than 10%, then the mode becomes “Dry” such that the blower CFM is increased to the “Dry” table setting.
• Lennox communicating variable speed indoor unit and communicating or non-communicating (conventional) single-stage outdoor unit (two zones maximum supported). • Lennox communicating variable speed indoor unit and communicating or non-communicating (conventional) two-stage outdoor unit (four zones maximum supported). • Parameter settings are listed in “Table 12. Zoning Control Parameters” on page 40. • Wiring connections are listed in “Figure 8.
Thermostat ventilation CFM parameters are to be adjusted only after the HRV/ ERV set up is completed and the CFMs are known. Once the thermostat’s CFMs are adjusted they are used with the thermostat’s timer algorithm to determine how long to run the HRV/ERV and to change from low to high speed if a 2-stage HRV/ERVs. • Ventilation while a zone is being conditioned is serviced simply by opening the fresh air damper while the zone system conditions the zone.
1. Wiring — See “Application Wiring” on page 7 and “Application Wiring” on page 7. 2. DO NOT cut any option links on furnace control. 3. After the entire system is wired, power up the system; the thermostat will check the system for installed communication devices. 4. During commissioning, you will end that process with the dealer control center screen. From there touch equipment to modified any system or equipment settings. 5. From the equipment list, touch furnace.
6. Complete Balance Point Control by editing the High and Low Balance Points. It is not necessary to change the defaults. 7. From the equipment list, press furnace. From this furnace screen you will have access to the various airflow settings. Set the system air volumes according the needs of the home. 8. When all CFM settings are complete, touch the back arrow (<) at the top left-hand of the screen to return to the dealer control center. Touch tests to access the test section. 9.
4. During commissioning you will end that process with the dealer control center screen. From there touch equipment to modified any system or equipment settings. 5. Select Balance Point Control and touch edit. Use the down arrow to touch Enabled. A pop-up warning screen indicating that due to enabling Balance Point Control other related parameter values were automatically changed. 6. Complete Balance Point Control by editing the High and Low Balance Points. It is not necessary to change the defaults. 7.
11. The dealer control center will appear. Touch tests to access the test section. 12. Here you will have another opportunity to adjust blower circulation, heating and cooling circulation air flows. Use the plus or minus buttons to adjust up or down the CFM settings. Once adjustments are completed, touch continue. 13. Under the touch test to run screen, you may un-check any tests not required, or run all tests. Touch start tests to proceed.
• Cut on-board R-O clippable link. 4. After the entire system is wired, energized the system and the thermostat will check the system for installed communication devices. 5. During commissioning you will arrive at the equipment found screen. From there touch non-communicating equipment to add non-communicating equipment. 6. From the add/remove equipment screen touch the Outdoor Unit Type from the device list (1-stage HP or 2-stage HP) and touch done to return to the equipment found screen. 7.
the home where the thermostat is located. 1. 2. 3. 4. Home Wi-Fi Access Point is Visible Go to menu > settings > wi-fi , Slide the option to ON to enable Wi-Fi. Wi-Fi network will show not connected. Press on not connected to display a list of available access points. Select a network will be displayed listing all detected networks within range. Select your home network by pressing on the network name. E30 THERMOSTAT INTERNET ACCESS SERVER CONNECTION Figure 21.
buttons representing OPEN and SECURE wireless networks, along with button for adding a network. 2. Select the access point that has already been established and connected. When selecting the info icon, a screen will appear which will display an option to forget the network and IP address assigned to the thermostat by your router, sub-net mask, router, DNS and RSSI. If the RSSI signal strength is anywhere between -9 to -69, then the signal strength is sufficient.
Soft Disable Service Notification Codes Soft disabling is when the Lennox communicating thermostat finds an unknown control on the communicating system communication bus. The thermostat sends the unknown control a message to go into soft disable mode until the component is properly configured or removed. The following are service notification alert codes. Table 18. Service Alert Notification Codes Sometimes soft disable will occur when a control is being replaced.
Alert Codes Table 19.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code 13 Inverter Flash Code Priority Condition Service Urgent Actual Displayed Alert Text Under dealer control center > Notifications Thermostat found more than one outdoor unit, or more than one indoor unit, or more than one thermostat connected to the system.
Table 19.
Table 19.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code The system has not been able to turn on the heating for more than 45 minutes.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code The heat pump could not increase the room temperature 0.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code One of the system components has lost communication with the system.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code 110 Service Urgent The component AC line voltage is too low.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code 115 Inverter Flash Code Priority Condition Service Urgent Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip 24VAC power to a system component control is lower than the required range of 18 to 30VAC.
Table 19.
Table 19.
Table 19.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code The furnace low pressure switch is stuck closed.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code The furnace low pressure switch is open while in run mode. • Check pressure (inches w.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code Flame sensed without call for gas heating. Perform the following: • Shut off gas.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code The furnace is in Watchguard mode. The furnace low pressure switch is open.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code 275 Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Service Urgent GF Flame Out Of Seq. No Flame Component or System Operational State and Troubleshooting Tip The furnace flame is out of sequence.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code 295 Inverter Flash Code Priority Condition Service Soon Actual Displayed Alert Text Under dealer control center > Notifications ID Blower Over Temperature Component or System Operational State and Troubleshooting Tip The indoor blower motor is overheating.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code 345 Inverter Flash Code Priority Condition Service Urgent Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip The O relay on the system component has failed.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code 350 Inverter Flash Code Priority Condition Service Urgent Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip The air handler’s electric heat is not configured or incorrectly configured.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code Communicating Mode: NOTE: The on-board jumper DS-R (W914) will be cut.
Table 19.
Table 19.
Table 19.
Table 19.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code 420 Priority Condition Service Soon Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip The heat pump defrost cycle has taken more than 20 minutes to complete.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code The liquid line temperature sensor has malfunctioned.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code The inverter has detected a high main input current condition.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code The inverter has detected a DC link low voltage condition.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code Compressor start-up failure.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code The inverter has detected a DC link high voltage condition.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code Compressor phase current is too high.
Table 19.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code Inverter internal error.
Table 19.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code Compressor slowdown due to high heat sink temperature.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code This alert code is for more information than an issue with the system.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code 444 Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code Service Urgent HP Reversing Valve Relay Or Solenoid Fault Relay failure.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code 530 Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip • Check 24VAC voltage to all dampers. ZS Low Damper Service Soon • Check 24VAC damper transformer.
Table 19.
Table 19.
Table 19.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code • HD wall display not detected for more than 30 seconds.
Table 19. Alert Codes and Troubleshooting GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat Alert Code Inverter Flash Code Priority Condition Actual Displayed Alert Text Under dealer control center > Notifications Component or System Operational State and Troubleshooting Tip How to clear alert code • Download for firmware failed.
Table 19.
Installation Checklist Smart Hub Checks: 1 Is the smart hub properly mounted to either a wall stud or wall? (Do not mount on equipment or ductwork) 2 Is communication status LED (green) visible? When LED is active it indicates that 24VAC is present at the smart hub. It also indicates communication is active between smart hub and HD Display.
The thermostat can be accessible via the Dealer Dashboard only after the dealership’s main phone number or company name is added during thermostat commissioning. Technical Support and Mobile App for Installers/Technicians Only Service Dashboard Search Screen Technical Support for Installers/Technicians Only Lennox Residential technical support can be reached at 1-800-453-6669. Hours for support are Monday through Friday 8am - 8pm EST.
System History This section provides a list of alerts over the past 12 months Remote In Button • Allows dealer remote control of customer’s thermostat (if enabled) • Remote In thermostat controls have the same appearance and functions as the touchscreen display, making it easy to make any settings and adjustments. • Button is red if access is granted by homeowner and gray if Remote In is disabled at the thermostat.
Index A Advanced Dehumidification Descriptions 44 Airflow Profile - Cooling 38, 39 Alert Codes and Troubleshooting 55 Apple HomeKit 19 Auto Brightness 40 Auto Changeover Humidif.
Gas Heating Steady State PI Gain (SLP98V only) 27 Gas Heating Step Change PI Gain (SLP98V only) 27 HP Heating Cycles Per Hour 27 HP Heating Steady State PI Gain 27 HP Heating Step Change PI Gain 27 N Number of Gas Heating Stages 28 O Operating Environment 3 Outdoor Air Sensor 6 Outdoor Temperature Calibration 28 Reading Calibration 23 Source 41 Overcooling 43 P Perfect Temp 28 Proximity Control 41 PureAir S 45 PureAir Wiring Diagram 13 R Received Signal Strength Indication (RSSI) 52 Re-configure System
