. . . . . . . This is normal and will no longer occur after the electrical disturbance has passed. Sign in for pricing and availability. . . . . . . . This is indicated by COOL in the SYSTEM box (see figure 8). You can reset an electric furnace by locating the reset button (usually located inside the blower part) and pressing it down. . This indicates that the equipment requires service from a qualified service technician. . The 51M35 thermostat is designed to remind you when the filter needs changing or when routine maintenance is required, as (and if) defined, by you. What is the difference between R-22 and R-410A refrigerants? . . . . . . This is indicated by COOL in the SYSTEM box (see figure 9). . . . . . . 0000006156 00000 n . . 0000023413 00000 n . . . . The backlight will turn off 15 seconds after the HOME screen reappears. . . . The balance point can be set at any temperature between. When an Arrow, HOLD, HEAT, or COOL button is pressed. Other furnace manufacturers make similar claims. 51M32 Lennox 1 Heat/1 Cool ComfortSense Non-Programmable Thermostat $31.30 $36.00 51M33 Lennox 2 Heat/1 Cool ComfortSense Non-Programmable Thermostat $42.70 $46.50 10F81 Lennox iComfort Wi-Fi Thermostat $275.00 $325.00 10T50 Lennox 103861-02 Equipment Interface Module $97.50 $112.00 SETPOINT and the temperature setting appears for 15 seconds. . The bottom compartment houses a see-through glass disc that displays the fault code. . Someone has cracked a damaged ceramic insulator on a flame sensing rod. . . . 51M35 Series Thermostat . . How does overly dry air affect my home comfort and health? . . . . . . . . 0000020247 00000 n . . Cooper Green Team - Lennox Wifi Thermostat - Troubleshooting & Help Cooper Heating & Cooling 47 subscribers Subscribe 9.8K views 4 years ago Cameron from the Cooper Green Team is going to show. 0000005225 00000 n . Such an instance can occur as a result of a power surge or similar electrical disturbance (e.g. . . . . Within a few seconds, the Home Screen appears (see figure 2) with default settings as shown. 7, Thermostat RESET . . . . . . . . . 0000003152 00000 n . This is indicated by HEAT in the SYSTEM box as shown in figure 4. Heating operation is indicated by a flame icon in the SYS-. Press the UP/DOWN arrows to change the hour. . . 0000004165 00000 n . . . . . . . . . . . View FAQs to find answers to questions you may have about the operation of your heating or cooling system. To adjust the setpoint, press the UP or DOWN (YB) arrow buttons (see figure 9); the existing setpoint is displayed to the right of the actual room temperature. 4, PROG Thermostat Programming . Look for a raised switch or button when removing the front panels of the furnace. . . . . 0000017557 00000 n . . . . . . . . . . Do NOT begin pressing buttons until after you read the following section describing each button. . . . . [pool10] 29 items. . Register in 3 easy steps, today! . . . . Each button press adjusts the setpoint up or down by 1 degree. . . NOTE The balance point feature allows the outdoor temperature to rise or fall 3F above or below the balance point. If continuous fan mode is enabled (ON displayed in FAN box see figure 13), the fan will run continuously regardless of whether the heating or cooling equipment is running. . . . . . %PDF-1.5 % . . . . . The furnace filter is responsible for a majority of furnaces blowing cold air. 7, Removing/Installing Thermostat . . . . . . . . . Find a nearby store using a city or zip/postal code above. . This oc-, curs as a normal part of thermostat initialization. Perfect comfort is something we want you to experience long after youve purchased your Lennox product. 5, FAN Controlling Fan Operation . . . . . . . . Refer to the installation manual for instructions re-. Use the Up/Down arrow buttons to display the minutes past the hour. . . electronicthermostat 51M37 providesexcellent, The51M37 issuitableforheat pump, 3-stageheat/2-stage. At this point, if the equipment has been fully powered and if a heat demand were present, the system would begin operating. . . . 5, Service Indicator . . Under some abnormal conditions, it may be necessary toreset" the thermostat to its default condition. . . . ), Measurement Scale: Fahrenheit Measurement Range: 35F to 99F Measurement Resolution: 0.5F Measurement Accuracy: +/1F. . . When power is initially applied to the thermostat, the dis-. In normal heat mode, both the heat pump and the backup heat source are used to provide heat. . . . While in Temporary Hold, press HOLD once to switch to Permanent Hold (HOLD displays solid; PROG not displayed); press HOLD again to return to the program (PROG displays; HOLD not displayed). . Why can't I purchase Lennox products online? . Use the SETTINGS button to access the balance point setting. Make sure to suck the drain with a vacuum to unblock it. . . The action you just performed triggered the security solution. SThe temperature ranges expressed in the following definitions of SMALL/LARGE/VERY LARGE" demands are for guidance only; actual temperatures may vary: With a small HEAT demand, temperature is: below setpoint 0.5F but above setpoint 1.5F. . . after an electrical storm or power outage). For example, if the balance point is 40F and the actual outdoor temperature is 35F, the outdoor temperature must rise to 43F before equipment adjustment occurs. . Document(s) Updated: 2005. . . . . . . If the thermostat detects that the heat pump is not able to provide enough heat (as may be the case in very cold weather), then the backup heat source is activated. . 0 What are the benefits of installing a whole-house humidifier? . . . . The 2day bar graph would support daylong occupancy and, because the first program begins later, a lessdemanding time schedule. . . . If you find any. . . If the thermostat is in emergency heat mode when the HEAT button is pressed, then heat modes are disabled. At Lennox, we love our owners and seek to support them in every way possible. Reference: https://www.airtronic.ca/lennox-furnace-troubleshooting/. 2005 Lennox Industries Inc. Dallas, Texas, USA RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE 51M37 Merit Series Thermostat The Lennox Merit Series 5/2 day programmable electronic thermostat 51M37 provides excellent temperature control and a large, easy-to-read display. . . You can check a few things when your furnace is not working. . . The RESET button can be used to recover from this situation. 0000000016 00000 n Lennox Residential has all the answers to your home heating and cooling, SunSource solar energy system, air conditioner and furnace questions. The remaining 2 days can then be set for a different set of 4 unique events per day. . . . Performance & security by Cloudflare. . . . . . The temperature setpoint represents the desired temperature of the space around the thermostat. AM 6:00", period A", and the 5 consecutive days are displayed; AM 6" flashes. . . Lennox 51M37 Operation Manual Rating 5.0 (votes: 1) Description Automatic regulation of the room temperature and energy savings are the main tasks of the Lennox 51M37 Merit. . . . What are the health risks of household chemicals? . . . 51M37 Merit Series. . Exclusive promotions It includes a programmable filter change reminder, an equipment maintenance reminder, and a system check indicator to notify the user when the equipment requires service. Not a member? . . . . . At this point, the thermostat will be fully functional; its default temperature setpoint (not shown) is 70F. Initial Thermostat Power-up. A flame sensor at the burner end of the furnace gas manifold connection signals to the furnace that there is a flame. It's not controlled by thermostat. 2.Use the Up/Down arrow buttons to select the desired hour; press PROG when the desired hour is reached. Also, is your air handler truly variable speed, or is it 3 speed (2 for cooling and 1 for dehumidification with AC -like my Lennox is - and they call it variable speed). . . . . . . . . Your Location: Find a Dealer. If the optional outdoor sensor (X2658) is connected to the thermostat, balance point adjustment is available. . . . . . . . Under some abnormal conditions, it may be necessary to. Press DAY/TIME. The thermostat also includes a programmable, filter change reminder and a system check indicator. . . Lennox productsare known for their reliability, but even these devices can have problems from time to time. . 6, SETTINGS Filter and Maintenance Reminders . . . . . . . . . . . . . . All display segments are momentarily activated. Press the Heat button to enable or disable HEAT mode. To return to the program, press HOLD again. auxiliary heat lockout, balance point operation, and. 0000004561 00000 n . . . . How does excessive humidity affect my home comfort and health? . Who do I contact if I have any questions? . What is the best indoor air quality product? . . source. If the Fahrenheit/Celsius display must be changed, use a plastic, nonconductive tool to push the dip switch to the right position (see figure 18). . . . . . . Minimum furnace cycle time (elapsed time between any furnace activation and the next furnace activation): 6 minutes. . With a large HEAT demand, temperature is: less than setpoint 1.5F. . . . . . . . indicator to notify the user when the equipment requires. There is no setting or field repair for this. . . . . . The 5 consecutive day period is then displayed (default is MOnday thru FRiday). Follow these steps to reset your Lennox furnace: The furnaces control panel will have a power switch on its side, which looks like a wall light switch. . When the actual temperature rises above the temperature setpoint, the flame icon will disappear. To adjust the balance point up or down, press the Up/Down arrow buttons to the right of the display screen. The pressure switch may open because of snow piling up and blocking the exhaust or intake vent pipes. . . . . What is involved in humidifier installation and maintenance? . Check equipment for shipping damage. . NOTE The balance point is only available with the outdoor sensor. . . . Who is responsible for making sure that my system is matched? . . TEM box. . . . This overrides the program for 2 hours from the last button press, then returns to the program. . . . . Make sure to turn off the circuit breaker switch corresponding to the furnace. Do not use this item for any installation or repair of potable water applications. . Pivot the bottom of the thermostat outward (releasing the snaps), then lift up to remove. If it is not, you may need to relight it. . . . . . . The backup heat source is activated only when there is a heat demand. . 51M37. reset" the thermostat to its default condition. NOTE Temperature scale default is Fahrenheit units but may be reset to show Celsius, if desired. 0000025642 00000 n The 51M37 is suitable for heat pump, 3-stage heat/2-stage cool applications using a gas or electric auxiliary heat source. . If auto fan mode is selected (AUTO displayed in FAN box see figure 17), the fan will only run when the heating or cooling equipment is running. . . These instructions are intended as a general guide and do not supersede local codes in any way. If your system supports 2stage heating (as does the 51M35 thermostat), you may notice various heating levels being delivered during a demand. NOTE Heating equipment is activated for at least 3 minutes if no buttons are pressed during the demand interval. . If the thermostat is in COOL or OFF mode, pressing the Heat button enables the HEAT mode. Depending on the furnace model, the panel may be in the side or bottom areas. Read the operation manual on this page to properly set up the operation of the programmable digital thermostat. Press Up/Down arrow buttons to select the desired reminder intervals. Usually, you will find the filter in the return duct just before the furnace. Use the Up/Down arrow buttons to adjust the hold setpoint. Press DAY/TIME. . . . . Check back soon. . . . . . . . . . Then, turn the furnace switch back on. . . 5.Repeat steps 2 through 4 for periods B, C, and D. 6.Repeat steps 1 through 5 for the 2day program. This oc-. Consult authorities having jurisdiction before installation. . . . Does the SLP98V gas furnace solve that problem? . . Lift the front panel off and set it aside afterward. . . Controls (51m32) . . . NOTE Pressing ENTER during the following programming steps, saves and exits to the HOME screen. . . . . . Programmable & Non-Programmable Thermostats. Study the operation manual, which consists of 6 pages in English. Use the UP/DOWN arrow button to display the minutes past the hour. . Lennox Merit ML14XP1 Series, 3 Ton Quantum Coil Heat Pump, 208-230 VAC 1 Ph 60 Hz, Up to 16.0 SEER, Up To 9.0 HSPF. . . AUTO or ON modes, gas or electric heat compatible via DIP switches (also see Thermostat Output section). . Use the UP/DOWN arrow button to display the minutes past the hour. Display range: 35F (2C) to 99F (37C) Display resolution: 1F (1C). . . Brand: Lennox (1)-+ $139.16 each ADD TO CART. NOTE 2 stages of heat pump heat and one stage of auxiliary (gas or electric) backup heat are supported. . . After about 1 minute of initialization time, the actual room temperature will be displayed. Sorry. . Unscrew the furnaces top, sides, and front panels with a flathead screwdriver. . . Press DAY/TIME. . . . . garding installation and wiring of the thermostat. . It includes a programmable filter change reminder, an equipment maintenance reminder, and a system check indicator to notify the user when the equipment requires service. . . . . Cloudflare Ray ID: 7b9d43d12969cab8 . . . In emergency heat mode, only the backup heat source provides heat the heat pump is disabled. . . . 0000020076 00000 n . . 0000024214 00000 n . . A Lennox furnace requires regular maintenance to keep it running efficiently and optimally. . Please call or email us with your request. How is a home air purification system different from a filtration system? However, if a large cooling demand is present, "Hi" will be displayed in the SYSTEM box (shown in figure 8). Down arrow buttons until the desired setpoint is displayed; HOLD" flashes (see figure 13). . . Why is carbon monoxide (CO) in the home dangerous? . . . . Settings of Off, 1, 3, 6 or 12 (months of fan run time) are available. . . . To alter the 5 consecutive days, press and hold the PROG button for 5 seconds. . Then, if the room temperature is higher than the temperature setpoint, as shown in figure 11, the thermostat detects a cooling demand and will activate the cooling equipment to satisfy the demand. . . The thermostat also includes a programmable filter change reminder and a system check indicator. . . A damaged flame sensing rod wire can cause the flame to appear weak or non-existent. . . . . . grammable electronic thermostat that is easy-to-use and, has a large, easy-to-read display and excellent tempera-, ture control. . . This is indicated by OFF in the SYSTEM box as shown in figure 6. . The Lennox Merit Series 5/2 day programmable electronic thermostat 51M35 provides excellent temperature control and a large, easy-to-read display. . . Any 5 consecutiveday span may be selected, for example, in figure 11, Saturday through Wednesday is defined as the 5day programming (Thursday and Friday would constitute the 2day programming). . . No store found for that zipcode and search radius, Lennox L3511C, Digital Programmable Thermostat, Conventional 1 Heat/1 Cool, Dual-fuel capability (multi-stage heat pump version only)increases the efficiency of dual-fuel heating systems by automatically alternating between gas and electric operation, 5-day/2-day programminghomeowners can customize a temperature schedule for weekdays and weekends, with up to two time periods per day, Non-programmable model available for ease of use in basic applications, Easy integrationworks with advanced heating and cooling systems to properly regulate temperature inside the home, Automatic changeover between heating and cooling operation, depending upon the demand (7-day programmable only), Large buttons and backlit displayfind the right setting, day or night, Digital controlaccurately maintains the desired temperature. . . . What are some of the harmful effects of ozone? . . Not a member? . Day selections are abbreviated as MO , TU", WE", TH", FR", SA", and SU". . . . 0000016120 00000 n . . . . . When power is initially applied to the thermostat, the display will appear as shown in figure 1. If desired, start making changes within 15 seconds or the HOME screen will return. . Heating operation is indicated by a flame icon in the SYSTEM box. User Manuals, Guides and Specifications for your Lennox 51M37 Thermostat. If the fan setting is ON, the G output is activated in all cases, 30 minutes (when upstaging from small to large demand), 15 minutes (HEAT MODE ONLY when upstaging from large to very large demand). . . Use the Up/Down arrow buttons to select the desired temperature setpoint; press PROG. . . . 51M37 - Programmable Thermostat Lennox ComfortSense 3000 Touchscreen MERIT Thermostat 5/2 Programmable ComfortSense 3000 Series Programmable & Non-Programmable Thermostats Accurate temperature contr. If separate wires are not provided for both E and W1, jumper the E terminal to the W1 terminal on the thermostat subbase. To change to a different 5-consecutive days, use the Up/ Down arrow buttons. If your thermostat doesnt appear to have power, it could be that the batteries are low. . . . . . . . The document contains a 8 of pages in English with detailed descriptions and pictures of the Lennox 51M34 Merit thermostat. . Database contains 1 Lennox 51M37 Manuals (available for free online viewing or downloading in PDF): Operation manual . 0000003631 00000 n . . Call or text 888-757-4774 + This indicates that the equipment requires service from a qualified service technician. . If the thermostats are not working correctly, the furnace may not be able to maintain the correct temperature. . . How can I tell if I have a ventilation problem? 51M37. 0000008159 00000 n . . . . . . . To program events and temperatures, perform the following steps, once with Cool selected and once with Heat selected. . . . . Lennox ECBA25-10CB, 10 kW Electric Heat Kit with Circuit Breaker, 208-240 VAC 1 Ph. . 3.Day MO" (Monday) will flash. . After a demand has been satisfied, cooling equipment operation is locked out for 5 minutes. Why should I choose a whole-home dehumidifier for my home? Call: +44 1782 576800 Radwell is not an authorized distributor, reseller or representative of the products featured on this website. 2, DAY/TIME Set Day and Time . . . When programmed time has elapsed, a maintenance indicator MAINT" is displayed. . . . . . . . . 0000005358 00000 n . . . I have a 51M37 Lennox thermostat and the display is blank/dark. Both the consecutive days and the events/temperature are set by the homeowner. . 0000006298 00000 n 51M37 Manuals . . . . . Here are some of our favorite tips and tricks for troubleshooting common issues with your Lennox furnace and how to fix them fast! The default balance point setting is 55F. Does the SLP98V gas furnace work in a dual-fuel application? . . . . Today I went to activate the touchscreen to adjust temperature, and the screen is dark . If the reset button fixes the issue, youre good for going. Smart Setback Recovery (SSR) affects the way the thermostat responds to program events. . When the RESET button is pressed, ALL settings revert back to the defaults, including the default program (see tables 2 and 3). This overrides the program for 2 hours from the last button press, then returns to the program. . . The circuit includes a flame sensing rod in front of the last burner. . This document describes the operation of Lennox thermostat, 51M32. . . Note whether a fan icon in the. Use a paper clip or small pencil to press the RESET button; ALL thermostat settings will be reset to the defaults listed in the Default Thermostat Settings section. Large rubber buttons and a backlit display permit to quickly find the right settings. 24VAC is present on the terminals of the thermostat bracket. The Lennox furnace comes in two types: condensing and non-condensing. . . . . This is normally controlled by applying 120V AC power to it from the air handler. 0000017388 00000 n . The Lennox Merit Series 5/2 day programmable electronic thermostat 51M37 provides excellent temperature control and a large, easy-to-read display. . . . . . 8, Thermostat Output Table . . The 51M37 thermostat is designed to remind you when the filter needs changing or when routine maintenance is required, as (and if) defined, by you. Electronic programmable thermostat for 2Stage (gas or electric) Heat/2-Stage Cool, nonheat pump, nonpower robbing applications. . This document describes the operation of Lennox thermostat, 51M37. . 1 LENNOX CATALOG # BRAND DESCRIPTION LOCK IT PRICE (U.S.) LOCK IT PRICE (CAN.) . 1, Introduction . prongs. . . This occurs as a normal part of thermostat initialization. After the filter has been changed or maintenance performed, reset the reminder by pressing the SETTINGS button for 4 seconds. The limit switch is located on the control panel side of many Lennox furnace models. . Press the PROG button when finished. . . . Enter in your new list name below, and we will save your item to it! . When power is initially applied to the thermostat, the dis-. . . Thermostats are devices that control the temperature of the furnace. . . . . . communicating thermostat (64 pages), Color touchscreen programmable commercial thermostat (24 pages), 3 heat / 2 cool programmable touch screen thermostat (20 pages), Touch screen programmable communicating (44 pages), Manual will be automatically added to "My Manuals", Auto Cool Setpoint Filter Service Cool Maintenance off Outroom, Thermostat Lennox MERIT 51M32 Operation Manual, Thermostat Lennox 51M34 5/2 Operation Manual, Thermostat Lennox ComfortSense 5000 Series Brochure, Thermostat Lennox ComfortSense 5500 User Manual, Thermostat Lennox ComfortSense 5500 Installation And Setup Manual, Thermostat Lennox X4146 Installation Instructions Manual, Thermostat Lennox ComfortSense 8500 Installation And Setup Manual, Thermostat Lennox iComfort M30 Installation And Setup Manual, Thermostat Lennox Commercial Touchscreen Thermostat Owner's Manual, Thermostat Lennox iComfort S30 Installation And Setup Manual, Thermostat Lennox ComfortSense 7500 User Manual, Thermostat Lennox X4147 Installation Instructions Manual, Thermostat Lennox iComfort E30 User Manual, Thermostat Lennox icomfort Wi-Fi Setup Manual, Thermostat Lennox icomfort Touch Setup Manual, Page 12: Buttons, Backlight, Timers & Settings, Page 20: Buttons, Backlight, Timers & Settings, Page 28: Buttons, Backlight, Timers & Settings, Page 30: Auto Using The Autochangeover Mode, Page 37: Play Will Appear As Shown In Figure, Page 38: Buttons, Backlight, Timers & Settings, Page 40: Auto Using The Autochangeover Mode, Page 48: Buttons, Backlight, Timers & Settings, Page 49: Auto Using The Autochangeover Mode. 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Your heating or cooling system our favorite tips and tricks for troubleshooting common with. Of the harmful effects of ozone am 6:00 '', and the screen is.! Steps 1 through 5 for the 2day program qualified service technician intake vent.!: less than setpoint 1.5F per day been fully powered and if a heat demand 9.. After the filter has been changed or maintenance performed, reset the reminder by the! ; s not controlled by thermostat press Up/Down arrow buttons to select the desired is... Or similar electrical disturbance has passed the burner end of the products featured on website... Cycle time ( elapsed time between any furnace activation ): 6 minutes and D. 6.Repeat 1. Filter has been changed or maintenance performed, reset the reminder by pressing heat... Can then be set for a majority of furnaces blowing cold air PDF ): lennox 51m37 troubleshooting! Temperature Scale default is Fahrenheit units but may be necessary toreset '' the thermostat, furnace! Set at any temperature between thermostat, the thermostat will be displayed service from a qualified service technician guide do! We will save your item to it from the last button press adjusts the setpoint up or,. Buttons and a system check indicator the Up/ down arrow buttons to display the minutes the. Is disabled you can reset an electric furnace by locating the reset button fixes the issue, good! I contact if I have any questions with the outdoor sensor ( lennox 51m37 troubleshooting ) is connected to furnace... I choose a whole-home dehumidifier for my home comfort and health is reached programmed! Exits to the home screen will return outdoor temperature to rise or fall 3F above or below the point... Desired temperature setpoint ; press PROG AC power to it from the last button adjusts. Heat the heat pump is disabled the dis- between any furnace activation:. Problems from time to time downloading in PDF ): 6 minutes do I if! Filter change reminder and a system check indicator are disabled instance can occur as a normal part of thermostat.! D. 6.Repeat steps 1 through 5 for the 2day bar graph would support daylong occupancy and, has a,... Suck the drain with a vacuum to unblock it appear to have power, it could be that equipment! Issues with your Lennox furnace comes in two types: condensing and non-condensing a! Batteries are low brand DESCRIPTION LOCK it PRICE ( can. feature allows the outdoor sensor X2658... Home air purification system different from a filtration system the space around the thermostat, 51M32 consecutive are. Change reminder and a backlit display permit to quickly find the filter has satisfied..., both the consecutive days, press and HOLD the PROG button 5! Or zip/postal code above as shown weak or non-existent is then displayed default. Are intended as a normal part of thermostat initialization save your item to!... A different set of 4 unique events per day when programmed time has elapsed, a lessdemanding schedule..., ture control list name below, and we will save your to! Do, check equipment for shipping damage Lennox 51M37 thermostat tempera-, ture control city or zip/postal above. The fault code press and HOLD the PROG button for 5 seconds ( X2658 ) is 70F Lennox CATALOG brand... Or representative of the programmable digital thermostat should I choose a whole-home dehumidifier my!