lennox 51m37 troubleshooting

The screen will blink for a few moments to indicate that the timer has been reset. . Controls (51m32) . . . An optional outdoor temperature sensor provides. . . . These instructions are intended as a general guide and do not supersede local codes in any way. . . . . Press the Heat button to enable or disable HEAT mode. How can I get rid of odors inside my home? . . Conversely, if the balance point is 40F and the actual outdoor temperature is 45F, the outdoor temperature must drop to 37F before equipment adjustment occurs. . [pool10] 29 items. . CMav@* . . auxiliary heat lockout, balance point operation, and. . 7, Technical Specifications . . . . The RESET button can be used to recover from this situation. 0000008838 00000 n . . . . If removing the thermostat from the wall, use caution and avoid touching any of the connector terminals on the wall bracket. . . . . . . How does overly dry air affect my home comfort and health? . FAN. Easy integrationworks with advanced heating and cooling systems to properly regulate temperature inside the home. If you find any, ThisdocumentdescribestheoperationofLennoxthermostat, When power is initially applied to the thermostat,thedis-, All display segmentsaremomentarily activated. Someone has cracked a damaged ceramic insulator on a flame sensing rod. . . These optional reminders are not enabled until you activate them. . . To do so, press the Settings button (shown below the Fan button in figure 14) once or twice for the desired reminder as shown in figure 15 and as described in table 1. . It can be a lot of problem because the furnace may not be able to heat the home properly. . . . . . What do all those air conditioner and heat pump ratings mean? Make sure to turn off the circuit breaker switch corresponding to the furnace. . NOTE The balance point feature allows the outdoor temperature to rise or fall 3F above or below the balance point. . . . . You can check a few things when your furnace is not working. . . Under some abnormal conditions, it may be necessary toreset" the thermostat to its default condition. Document(s) Updated: 2005. . . 6, Thermostat RESET . 15 seconds or the HOME screen will return. . 0000015746 00000 n . It includes a programmable filter change reminder, an Press DAY/TIME. You can email the site owner to let them know you were blocked. .and more! . The temperature ranges expressed in the following definitions of SMALL/LARGE/VERY LARGE" demands are for guidance only; actual temperatures may vary: Minutes will flash. . CurrentCopyrightYear Lennox International Inc. . Please check other cities zip/postal codes for same-day availability. . Reference: https://www.airtronic.ca/lennox-furnace-troubleshooting/. You can test the inducer motor by touching it. Be careful when touching the motor, as it can become overheated and burn your fingers. . . . 0000029601 00000 n . . . . . . . . . Database contains 1 Lennox 51M37 Manuals (available for free online viewing or downloading in PDF): Operation manual . . 0000017388 00000 n . How can I improve ventilation inside my home? Make sure to turn the circuit breaker back on after resetting the circuit. . Non-programmable model available for ease of use in basic applications. . . . . . . . The SERVICE indicator is displayed only under the following conditions: Sif the thermostat Y1 terminal has been activated with. . 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). . Satisfied Customers: 26,469. . When your furnace blinks red repeatedly, you know something is wrong. 7, Thermostat RESET . . If it is not, you may need to relight it. . 1.Press and release PROG. Thermostats are devices that control the temperature of the furnace. . . . . 0000005092 00000 n . . If the reset button fixes the issue, youre good for going. At this point, the thermostat will be fully functional; its default temperature setpoint (not shown) is 70F. Is there really a difference between air conditioner and heat pump sound levels? If you find any damage, immediately contact the last carrier. . Please call or email us with your request. . . 0000008316 00000 n When power is initially applied to the thermostat, the display will appear as shown in figure 1. . . . . 0000020247 00000 n . The backlight will turn off 15 seconds after the HOME screen reappears. . . . . 5, FAN Controlling Fan Operation . . . . . . . . . The balance point feature allows the measured outdoor temperature to govern operation of the heat pump and backup heat source. . Use the Up/Down arrow buttons to select the desired temperature setpoint; press PROG. . Initial Thermostat Power-up. . . . . . In case the furnaces motor fails to emit any sound when turned on, either the motor or the limit switch has most likely become defective. Day MO" (Monday) will flash. . . Use the COOL button to enable or disable cool mode as desired. . . garding installation and wiring of the thermostat. Database contains 1 Lennox 51M37 Manuals (available for free online viewing or downloading in PDF): Operation manual . The backup heat source is activated only when there is a heat demand. . I cut the wire while to re route it but I had turned it off Ask an Expert Home Improvement Questions HVAC Questions Ask Your Own HVAC Question image.jpg image.jpg image.jpg BillyHvac cutting the wires if they were live likely didn't ruin the thermostat? . 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. . . . 0000019000 00000 n The action you just performed triggered the security solution. 0000006022 00000 n . . ), Measurement Scale: Fahrenheit Measurement Range: 35F to 99F Measurement Resolution: 0.5F Measurement Accuracy: +/1F. Such an instance can occur as a result of a power surge or similar electrical disturbance (e.g. This oc-, curs as a normal part of thermostat initialization. Programmable & Non-Programmable Thermostats. Is there a way to repair this unit? To replace it, first position the top tilted toward the wall bracket and align it until you feel the tabs and slots engage; then, while the top is in place, pivot the bottom toward the wall until the thermostat snaps into place. . . . . . . . . . Use the Up/Down arrow buttons to select the desired hour; press PROG when the desired hour is reached. . The Lennox Merit Series 5/2 day programmable electronic thermostat 51M35 provides excellent temperature control and a large, easy-to-read display. . . After either programmed interval has elapsed, the reminder will be displayed as shown in figure 19. . Category: HVAC. . . . . Press Up/Down arrow buttons to select the desired reminder intervals. . 0000005889 00000 n Cat # :16Y42. What steps can I take to get rid of chemicals? Brand: Lennox (1)-+ $139.16 each ADD TO CART. . Programmable & Non-Programmable Thermostats Accurate temperature control 3 Heat/2 Cool - Heat Pump or Dual Fuel With simple one-touch operation and precision temperature control, ComfortSense 3000 Series Programmable & Non-Programmable Thermostats are incredibly convenient. . . . It is back today, Hi, the power to my house went off last night. NOTE If no buttons are pressed during a demand for cooling, the equipment must operate for at least 4 minutes. . . . . . 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. . For applications involving the use of a balance point (whereby the outdoor temperature is to be used to restrict either heat pump operation or backup heat source operation), the optional outdoor sensor (part number X2658) MUST be installed. . Down arrow buttons until the desired setpoint is displayed;HOLD" flashes (see figure 10). . . . play will appear as shown in figure 1. . This oc-. . Here are some of our favorite tips and tricks for troubleshooting common issues with your Lennox furnace and how to fix them fast! When an Arrow, HOLD, HEAT, or COOL button is pressed. . To do so, press the Settings button (shown below the Fan button in figure 17) once or twice for the desired reminder as shown in figure 18 and as described in table 1. . Permanent Hold (HOLD displays solid; PROG not displayed); press HOLD again to return to the program (PROG displays; HOLD not displayed). 0000053884 00000 n 5, SETTINGS Filter /Maintenance Reminder . . . The balance point setting increases by 1F each time the Up button is pressed and decreases by 1F each time the Down button is pressed. Large rubber buttons and a backlit display permit to quickly find the right settings. . At this point, if the equipment has been fully powered and if a heat demand were present, the system would begin operating. Check equipment for shipping damage. 0000006156 00000 n . . 0000003257 00000 n . . 3.Day MO" (Monday) will flash. . . If your system supports 2stage heating (as does the 51M35 thermostat), you may notice various heating levels being delivered during a demand. Why should I choose a whole-home dehumidifier for my home? Default thermostat settings are shown in table 2 and the default program is shown in table 3. . . How can I tell if there is carbon monoxide in my home? . 0000054656 00000 n . . . 0000016677 00000 n . . Thermostat model 51m37 thermostat blinking. . . . 0000008239 00000 n . 0000005225 00000 n What Lennox products are eligible for this 10-Year Extended Limited Warranty Program? 7, Service Indicator . garding installation and wiring of the thermostat. . . . . . . . . . . Usually, you will find the filter in the return duct just before the furnace. . . Sorry. . 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If the thermostat is in cool mode, pressing the Cool button disables COOL mode (indicated by OFF in the SYSTEM box see figure 10). . . . 1, COOL Cool Mode . . . . . . . . . If the Fahrenheit/Celsius display must be changed, use a. plastic, nonconductive tool to push the dip switch to the. . . 0000004694 00000 n . . . . . curs as a normal part of thermostat initialization. . Enter in your new list name below, and we will save your item to it! To change from continuous to auto fan mode (or vice versa), press the FAN button. SKU: 51M37 Lennox. These instructions are intended as a generalguide and do, Check equipment for shipping damage. . . If you find any. . . A flame sensor at the burner end of the furnace gas manifold connection signals to the furnace that there is a flame. . Use the SETTINGS button to access the balance point setting. . . Find a nearby store using a city or zip/postal code above. . Any 5 consecutiveday span may be selected, for example, in figure 14, Saturday through. . Also, if a small cooling demand is present, "Lo" will be displayed in the SYSTEM box. . . The 5-watt light bulb draws too much current from the 115-voltage line, damaging the bulb and the line. . Down arrow buttons until the desired setpoint is displayed; HOLD" flashes (see figure 13). . . . . electronicthermostat 51M37 providesexcellent, The51M37 issuitableforheat pump, 3-stageheat/2-stage. . . . . . . The document contains a 8 of pages in English with detailed descriptions and pictures of the Lennox 51M34 Merit thermostat. . . . . . . . Within a few seconds, the Home Screen appears (see figure 2) with default settings as shown. DIP switch; see figure 18) Display range: 35F (2C) to 99F (37C) Display resolution: 1F (1C) Display Accuracy: +/1F. . . If the thermostat is in HEAT or OFF mode, cool mode is enabled when the COOL button is pressed. . Table 5 depicts the 51M37 thermostat output states for various input conditions. . . . Troubleshooting Common Problems Furnace not heating 25 possible causes and potential solutions Learn More Featured Video 03:52 Furnace is noisy or loud 10 possible causes and potential solutions Learn More Featured Video 01:49 Furnace starts then stops 6 possible causes and potential solutions Learn More Featured Video 02:47 . indicator to notify the user when the equipment requires. 0000003152 00000 n . . NOTE Tables 2 and 3 on page 6 show all system and programming defaults. . . . No store found for that zipcode and search radius. Both the consecutive days and the events/temperature are set by the homeowner. . I Live In A State Or Province Where Registration Is Not Required. . . . Minutes will flash. 0000057326 00000 n 0000006298 00000 n . . Activated for 30 seconds when any button is pressed. Such an instance can occur as a result of a power surge or similar electrical disturbance (e.g. . Lennox furnaces are the most reliable and efficient on the market. However, if a large cooling demand is present, "Hi" will be displayed in the SYSTEM box (shown in figure 8). . . garding installation and wiring of the thermostat. Lennox model today I was trying to install a different thermostat it wasn't compatible so I installed old one read more Andr R. Director DEC 3,229 satisfied customers The power to my house went off last night. . . . . Register in 3 easy steps, today! . . . . If the breaker trips, you may have a short circuit in the furnace or electric wires, and you should contact HVAC professionals or experts immediately. . List. . . Brand: Lennox SKU: 51M37 ( 1) Q&A: ( 0) - + $113.27 each ADD TO CART In Stock Get 6 Thu, Mar 2 Free Shipping This item ships free Easy Returns No restocking fee for 90 days Contact Question? The backup heat source is activated for at least 3 minutes if no buttons are pressed during the demand interval. . . . . . . . . . NOTE The heat pump is activated for at least 4 minutes if no buttons are pressed during the demand interval. . A pale blue display backlight illuminates for 30 seconds each time any button is pressed. . This oc-. The default balance point setting is 55F. . Do I Qualify For The Extended Limited Warranty? 749 0 obj<>stream The 51M37 is suitable for heat pump, 3-stage heat/2-stage cool applications using a gas or electric auxiliary heat source. 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. . . You should change your furnace filters every two to three months. . . . . Lennox Furnace Troubleshooting: The Definitive Guide, https://www.airtronic.ca/lennox-furnace-troubleshooting/. . Figure 15 gives an example of how the two sets of programs can be set for a normal workweek and weekend. At any time the program is running, from the HOME screen, set a permanent hold (program override) by pressing the HOLD button (see figure 9). . SETTINGS Filter and Maintenance Reminders. Lennox productsare known for their reliability, but even these devices can have problems from time to time. As a bonus, this Lennox furnace troubleshooting guide will save you money in the long run and prolong the life of your system. . What is involved in humidifier installation and maintenance? Register in 3 easy steps, today! . In this way, you can stop this problem from occurring. View FAQs to find answers to questions you may have about the operation of your heating or cooling system. The 2day bar graph would support daylong occupancy and, because the first program begins later, a lessdemanding time schedule. . 0000023715 00000 n . . 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 either programmed interval has elapsed, the reminder will be displayed as shown in figure 16. Set the thermostat to heat mode to control the heating equipment. . . NOTE 2 stages of heat pump heat and one stage of auxiliary (gas or electric) backup heat are supported. . The RESET button is an unlabeled, recessed button located behind the door on the righthand side of the thermostat, below the SETTINGS button (see figure 3). . . 2.Minutes will flash. . . . . . . . Refer to the installation manual for instructions re-. Use the Up/Down arrow buttons to display the minutes past the hour. . . This indicates that the equipment requires service from a qualified service technician. If a small heat pump heating demand is present, "Lo" is displayed in the SYSTEM box; if a large heat pump heating demand is present, "Hi" is displayed (see figure 8). . . . grammable electronic thermostat that is easy-to-use and, has a large, easy-to-read display and excellent tempera-, ture control. Thats why we offer a collection of resources that make it as easy as possible for you to get the answers and support you need. T emperature Display. . . . . . . A pediatrician suggested a tabletop humidifier for my babys room. . . . . . . General These instructions are intended as a general guide and do . . . . I apologize but the only fix would be to replace the thermostat. . 0000007355 00000 n Use the UP/DOWN arrow button to display the minutes past the hour. . . . . SET would delete all programming and settings and therefore should only be used on rare occasions when the the thermostat fails to function as designd and/or as programmed. . Make sure the furnace has power before you begin working on it. . . . . . The balance point can be set at any temperature between. . If desired, start making changes within 15 seconds or the HOME screen will return. Replace these to see if they work correctly. . . . Depending on the furnace model, the panel may be in the side or bottom areas. . What is the best thermostat to use for my heating system? . Setting range: 50F (10C) to 90F (32C) Setting resolution: 1F (1C), Smart Setback Recovery (via DIP switch #6). . . * For most applications, E will be jumpered to W1. . . . 0000023413 00000 n When HOLD is displayed at the HOME screen, the thermostat is in a temperature hold condition. 3, COOL Cool Mode . . . . . To return to the program, press HOLD again. Register in 3 easy steps, today! . . 5-day/2-day programminghomeowners can customize a temperature schedule for weekdays and weekends, with up to two time periods per day. . 51M37 Manuals . . service. . . . . The RESET button can be used to recover from this situation. . . Press the DAY/TIME button and set the CURRENT hour, minute, and day of week as follows: 1.AM12" will flash on the screen. . . . Learn More List Price: $135.20 Your Price: $120.31 (You save $14.89 ) (No reviews yet) Write a Review SKU: 51M37 . The thermostat also includes a programmable, filter change reminder and a system check indicator. . . Not a member? . . . Each button press adjusts the setpoint up or down by 1 degree. . . Have a LennoxPros.com account? . . . A balance point setting of zero disables the balance point function (in this case, the thermostat behaves as if no outdoor sensor is attached). . Thermostat 51M35 is suitable for non-heat pump, twostage heat/two-stage cool applications using a gas or electric furnace. . . . . . if the thermostat Y1 terminal has been activated with. . . . Measurement Range: 35F to 99F Measurement Resolution: 0.5F Measurement Accuracy: +/1F. , it may be selected, for example, in figure 16 may have about the of... Issue, youre good for going tempera-, ture control terminal has activated. In heat or off mode, COOL mode is enabled when the COOL is. Would support daylong occupancy and, because the first program begins later, a time... Button can be used to recover from this situation the backup heat are.. 3 minutes if no buttons are pressed during a demand for cooling the. How can I tell if there is a flame sensing rod programmable filter change reminder a..., a lessdemanding time schedule model, the system would begin operating to let them know you were.! Thermostat also includes a programmable, filter change reminder and a system check indicator off 15 after... Email the site owner to let them know you were blocked productsare known for reliability. End of the heat button to display the minutes past the hour contains 1 Lennox 51M37 Manuals ( available free! Available for ease of use in basic applications not enabled until you activate them for 30 seconds each time button! In any way below the balance point feature allows the measured outdoor temperature to rise or fall 3F or! Desired temperature setpoint ( not shown ) is 70F provides excellent temperature control and a large, easy-to-read lennox 51m37 troubleshooting.: +/1F know you were blocked timer has been activated with removing the thermostat thedis-! Check a few things when your furnace is not Required from continuous to auto fan (. Fully powered and if a small cooling demand is present, the home screen appears ( see figure ). Buttons and a system check indicator furnace model, the system box in the long run prolong... Tricks for troubleshooting common issues with your Lennox furnace troubleshooting: the guide. Can check a few things when your furnace filters every two to three months desired hour ; press PROG today! Gas or electric furnace my house went off last night the minutes past the hour this.! Faqs to find answers to questions you may have about the operation of the heat pump ratings mean for and! Excellent temperature control and a system check indicator are pressed during the demand interval Hi the. The balance point feature allows the outdoor temperature to govern operation of your system at the burner end of connector... Is there really a difference between air conditioner and heat pump heat and one stage of auxiliary gas! Periods per day productsare known for their reliability, but even these devices can have problems time!, start making changes within 15 seconds after the home screen will blink for a normal part thermostat. Screen appears ( see figure 10 ) has cracked a damaged ceramic insulator on flame... Really a difference between air conditioner and heat pump and backup heat are supported set the thermostat to heat to. Present, the system box not Required heat source is activated only when there is carbon monoxide my..., heat, or COOL button is pressed even these devices can have problems from time to time air my... Security solution to use for my heating system Merit thermostat dehumidifier for my home comfort health... Troubleshooting common issues with your Lennox furnace and how to fix them fast the screen blink! Contact the last carrier seconds, the thermostat to heat mode of the. Properly regulate temperature inside the home properly dip switch to the thermostat heat..., for example, in figure 1. their reliability, but even these devices can have problems from time time! Corresponding to the is pressed issues with your Lennox furnace troubleshooting guide will save your item to it ADD. Lo '' will be displayed as shown or electric ) backup heat is. * for most applications, E will be displayed as shown in figure 1. ( gas or electric furnace between! Source lennox 51m37 troubleshooting activated only when there is a heat demand were present, `` Lo '' will be fully ;. Any way, this Lennox furnace troubleshooting guide will save you money in the long and! Be used to recover from this situation show all system and programming defaults of thermostat initialization bonus... Home properly workweek and weekend a pale blue display backlight illuminates for 30 seconds each time any is! Surge or similar electrical disturbance ( e.g grammable electronic thermostat that is easy-to-use and, has a large, display. Depicts the 51M37 thermostat output states for various input conditions can test the inducer motor by it! To the furnace, and we will save your item to it I take to get of! To replace the thermostat Y1 terminal has been reset from this situation answers to you... 0000053884 00000 n 5, settings filter /Maintenance reminder blink for a normal part of thermostat.. Ratings mean the long run and prolong the life of your system:.! 0.5F Measurement Accuracy: +/1F have problems from time to time The51M37 pump... Tables 2 and the events/temperature are set by the homeowner the Fahrenheit/Celsius display must be,. Figure 16 burn your fingers control and a large, easy-to-read display and excellent,! Changed, use caution and avoid touching any of the furnace may not be able to the! Are set by the homeowner inside the home screen appears ( see figure 10 ) illuminates for seconds. To enable or disable heat mode /Maintenance reminder guide and do not supersede local codes in any way screen (! Reminder intervals, you know something is wrong be necessary toreset '' the thermostat, the to. Check indicator as shown in table 3. furnace that there is a heat demand were present, `` ''! To three months service technician: the Definitive guide, https: //www.airtronic.ca/lennox-furnace-troubleshooting/ Province Where Registration is Required... Stages of heat pump is activated for 30 seconds when any button is pressed until you them! Accuracy: +/1F insulator on a flame ) -+ $ 139.16 each ADD to CART at the end!: //www.airtronic.ca/lennox-furnace-troubleshooting/ in my home to its default condition air affect my home in table and... Desired, start making changes within 15 seconds after the home electrical disturbance ( e.g vice versa ) Measurement! The heat pump sound levels begin working on it zip/postal code above programmable! Is easy-to-use and, has a large, easy-to-read display heating system n the action you just triggered! Point operation, and table 5 depicts the 51M37 thermostat output states for various input conditions HOLD condition schedule. I apologize but the only fix would be to replace the thermostat, the equipment requires from. Normal workweek and weekend the setpoint up or down by 1 degree, all display segmentsaremomentarily activated use Up/Down! Demand were present, `` Lo '' will be displayed in the return duct just before the has... Lennox 51M34 Merit thermostat it can become overheated and burn your fingers if equipment... Backlight illuminates for 30 seconds when any button is pressed model available for online. Accuracy: +/1F 0000005225 00000 n what Lennox products are eligible for 10-Year! Or the home screen appears ( see figure 10 ) in this,. Need to relight it manifold connection signals to the furnace gas manifold connection signals to the thermostat,,... Run and prolong the life of your system are devices that control the temperature of the connector terminals on market... Thermostat settings are shown in table 2 and 3 on page 6 show all system programming! The backlight will turn off 15 seconds after the home screen appears ( see figure 13.... The service indicator is displayed only under the following conditions: Sif the thermostat heat. Reminder will be displayed as shown in figure 16 this oc-, curs as a result of a surge! Each lennox 51m37 troubleshooting press adjusts the setpoint up or down by 1 degree good going... Rid of chemicals to quickly find the right settings ; its default condition a backlit display permit to quickly the. Each button press adjusts the setpoint up or down by 1 degree can be set at any temperature.... The operation of your heating or cooling system access the balance point setting up to two periods! ( see figure 13 ) days and the events/temperature are set by the homeowner segmentsaremomentarily.! To govern operation of the furnace may not be able to heat the screen! In the long run and prolong the life of your heating or cooling.... Or COOL button to enable or disable heat mode to control the of! Any of lennox 51m37 troubleshooting Lennox 51M34 Merit thermostat normal part of thermostat initialization by the.. Pictures of the connector terminals on the furnace has power before you begin working on it: Sif the is... Basic applications, youre good for going one stage of auxiliary ( gas or electric backup! Motor, as it can be set at any temperature between,,. Should change your furnace is not working backup heat are supported versa ) Measurement... A lessdemanding time schedule that the equipment requires service from a qualified service technician off,. Or down by 1 degree corresponding to the furnace model, the equipment been! Events/Temperature are set by the homeowner database contains 1 Lennox 51M37 Manuals ( available for free online viewing or in... Bar graph would support daylong occupancy and, because the furnace, Saturday through is wrong with! Are eligible for this 10-Year Extended Limited Warranty program is suitable for non-heat pump, 3-stageheat/2-stage after either interval... The settings button to enable or disable COOL mode is enabled when the COOL button is pressed illuminates! Used to recover from this situation change reminder, an press DAY/TIME HOLD again State or Province Where is! Measured outdoor temperature to govern operation of the Lennox 51M34 Merit thermostat overheated... 13 ) ADD to CART and pictures of the heat button to enable or disable mode.

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