. Troubleshooting. Both have benefits and drawbacks, but the non-condensing model is more commonly used in homes because its less expensive and smaller than the condensing model. . . . . . This document describes the operation of Lennox thermostat, 51M32. . Set the thermostat to cool mode to control the cooling equipment. if the thermostat Y1 terminal has been activated with. Study the operation manual, which consists of 6 pages in English. What are the advantages of the CompleteHeat. The balance point feature allows the measured outdoor temperature to govern operation of the heat pump and backup heat source. Press the PROG button when finished. . . . Refer to the installation manual for instructions regarding installation and wiring of the thermostat. 4, PROG Thermostat Programming . Within a, few seconds, the display will appear as shown in figure 2. Electronic programmable thermostat for heat pump. . 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). . . . . Display Scale: Fahrenheit or Celsius user selectable (via. . . . At Lennox, we love our owners and seek to support them in every way possible. However, if SSR is enabled, the thermostat will react to a program event before the event occurs such that the desired temperature is reached at the time of the event, not after. . . . . . . . . . . . What steps can I take to get rid of chemicals? This prevents excessive cycling of the equipment when the outdoor temperature is near the balance point. . . . . Each button press adjusts the setpoint up or down by 1 degree. . . 0000057326 00000 n . . . The Lennox Merit Series 5/2 day programmable electronic thermostat 51M37 provides excellent temperature control and a large, easy-to-read display. . . . If the Fahrenheit/Celsius display must be changed, use a. plastic, nonconductive tool to push the dip switch to the. . While in Temporary Hold, press HOLD once to switch to. . . Which air filtration products make ozone? . . . With a very large heat demand, temperature is: OR 15minute 2nd upstage timer HAS expired. . . 0000005490 00000 n . . . Refer to the installation manual for instructions re-. . . . . . . . . . 0000008239 00000 n If the breaker is off, you can turn it on again. . . . . When abnormal equipment operation is detected, the SERVICE indicator will flash on the screen (see figure 17). . . . . The remaining 2 days can then be set for a different set of 4 unique events per day. damage, immediately contact the last carrier. General These instructions are intended as a general guide and do . . The water condenses inside a Category 4 furnace and collects in a collector box before draining into the house drain. Can strong odors in my house cause health problems? . . . 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. . . . . The screen will blink for a few moments to indicate that the timer has been reset. . . . The limit switch is located on the control panel side of many Lennox furnace models. Use the HEAT button to select normal heat mode, emergency heat mode, or to disable heat modes as desired. 0000006765 00000 n . . Be careful when touching the motor, as it can become overheated and burn your fingers. . . . . . 0000028516 00000 n . . . . . Such an instance can occur as a result of a power surge or similar electrical disturbance (e.g. . . . . Press the Up/Down arrows buttons to change the hour. . This will further ensure continuous and correct operation of the Lennox 51M32 Merit. This will allow you to understand the capabilities of the device. . A pale blue display backlight illuminates for 30 seconds each time any button is pressed. Lennox Thermostat Troubleshooting. . . Press DAY/TIME. . . . How does that compare to a whole-home humidifier? . . 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. . . . It can be a lot of problem because the furnace may not be able to heat the home properly. 0000003631 00000 n Use the Up/Down arrow buttons to adjust the hold setpoint. 0000020076 00000 n Also, if a small cooling demand is present, "Lo" will be displayed in the SYSTEM box. Press DAY/TIME. . . . . . . . . Day selections are abbreviated as MO , TU", WE", TH", FR", SA", and SU". Every time my current furnace cycles on, I hear a rush of air that's so loud, it wakes me from my sleep. . . . . . NOTE Temperature scale default is Fahrenheit units but may be reset to show Celsius, if desired. This indicates that the heating demand has been satisfied and that the heating equipment has been turned off. . . . . . . Upload manuals that we do not have and get. 0000025642 00000 n . . . . . As long as its too hot, its burnt. . . . . . 0000008159 00000 n . . Set the thermostat to heat mode to control the heating equipment. Sign in with the same credentials. What is the difference between an ARI and AHRI? . . . In some cases, it can be perilous if the problem is not properly addressed. A damaged flame sensing rod wire can cause the flame to appear weak or non-existent. . . SKU: 51M37. . . . . . 51M37. . What products are NOT covered under warranty? 0000052925 00000 n . Sign in for pricing and availability. . . NOTE Heating equipment is activated for at least 3 minutes if no buttons are pressed during the demand interval. . Not a member? You can test the inducer motor by touching it. Make sure the furnace has power before you begin working on it. 0000024214 00000 n Register in 3 easy steps, today! How does excessive humidity affect my home comfort and health? . The backlight will turn off 15 seconds after the HOME screen reappears. Follow these steps to reset your Lennox furnace: 1. The thermostat now functions much like a nonprogrammable thermostat. . . . . Such a RE-. . . When the actual temperature rises above the temperature setpoint, the flame icon will disappear. . . %PDF-1.5 % Order toll free: 800.884.5500 Order international: +1 609.288.9393 Are you in EU? . . . . . . . . . . . . . If your system supports 3stage heating (as does the 51M37 thermostat), you may notice various heating levels being delivered during a demand. Smart Setback Recovery (SSR) affects the way the thermostat responds to program events. Minutes will flash. The 5 consecutive day period is then displayed (default is MOnday thru FRiday). . . 6, SETTINGS Filter and Maintenance Reminders . This occurs as a normal part of thermostat initialization. Why should I choose a whole-home dehumidifier for my home? Learn More List Price: $135.20 Your Price: $120.31 (You save $14.89 ) (No reviews yet) Write a Review SKU: 51M37 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. . . . . 6, Technical Specifications . . . . . . . The air conditioning was working sporadically earlier but now is not coming on at all. What can be done about detecting carbon monoxide in the home? . 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. The thermostat hinges on tabs on the top of the subbase; no tool is needed to remove the thermostat from the subbase. 6, Removing/Installing Thermostat . There are no new entries! . . Add to Cart. . . Make sure to turn the circuit breaker back on after resetting the circuit. 747 61 Make sure to turn off the circuit breaker switch corresponding to the furnace. . . The AC system is a high end Lennox with a programmable Lennox thermostat. 51M37 Merit Series. The Truth About 2 Zone HVAC Systems: Which Is Right For You? 0000021406 00000 n . . . . . . . . . . . play will appear as shown in figure 1. . . . Large rubber buttons and a backlit display permit to quickly find the right settings. . What are the health benefits of a fresh-smelling home? 0000063496 00000 n . 2. 2.Use the Up/Down arrow buttons to select the desired hour; press PROG when the desired hour is reached. . To adjust the balance point up or down, press the Up/Down arrow buttons to the right of the display screen. An optional outdoor temperature sensor provides auxiliary heat lockout, balance point operation, and dualfuel compatibility. . Lennox Furnace Troubleshooting: The Definitive Guide, https://www.airtronic.ca/lennox-furnace-troubleshooting/. . . . . However, if a large cooling demand is present, "Hi" will be displayed in the SYSTEM box (shown in figure 11). Who do I contact if I have any questions? If the thermostat is in cool mode, pressing the Cool button disables COOL mode (indicated by OFF in the SYSTEM box see figure 5). . . FAN box is present (indicating that the fan is running) or not (fan not running). How effective are Healthy Climate solutions, compared to room air filters? Check for a power outage, furnace filter, or furnace blower. . . . What do all those air conditioner and heat pump ratings mean? 0000054656 00000 n . . Set the thermostat to cool mode to control the cooling equipment. . Unscrew the furnaces top, sides, and front panels with a flathead screwdriver. . . Also, when working with the thermostat dip switches, use a nonconductive tool and take caution to avoid making any contact with the circuit board, its imprinted circuitry and its connector prongs. The Lennox Merit Series 5/2 day programmable electronic thermostat 51M37 provides excellent temperature control and a large, easy-to-read display. . . . . This is normally controlled by applying 120V AC power to it from the air handler. . All display segments are momentarily activated. . . source. If continuous fan mode is enabled (ON displayed in FAN box see figure 16), the fan will run continuously regardless of whether the heating or cooling equipment is running. 1, General . 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. Press DAY/TIME OR, if adjusting for daylight savings time, pressing ENTER stores the single change and exits to the HOME screen, bypassing minutes and day of week. . . damage, immediately contact the last carrier. . 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. Why should I choose an ENERGY STAR product for my home? Here are some of our favorite tips and tricks for troubleshooting common issues with your Lennox furnace and how to fix them fast! . . . . . How does overly dry air affect my home comfort and health? . . The Lennox Merit Series 5/2 day programmable electronic thermostat 51M35 provides excellent temperature control and a large, easy-to-read display. . . . Can Equipment Be Registered After 60 Days from Either the Installation Date or Closing Date In The Case Of A Newly Constructed Home? . Remove the front panel of the furnace Home Comfort. . I already checked and there's no battery in the thermostat so it's not that. . . T emperature Display. You want to relax and unwind in the comfort of your own space. . 0000044287 00000 n . If youre anything like us, your home is your sanctuary. Please call or email us with your request. . . . . . . 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. The minimum flame sense current is 0.5 microAmps. . . . . . . To alter the 5 consecutive days, press and hold the, PROG button for 5 seconds. . . . . . . . Use UP or DOWN arrow buttons to display the current day. . . 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. . . . To return to the program, press HOLD again. . Do I Qualify For The Extended Limited Warranty? . . Compare the LED lights error codes to the flashing patterns listed on the furnace cover or user manual. . . The action you just performed triggered the security solution. . . . . . 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. . Lift the front panel off and set it aside afterward. With a small COOL demand, temperature is: above setpoint +0.5F but below setpoint +1.5F, With a large COOL demand, temperature is: above setpoint +1.5F, w/Gas Backup (dual fuel; no outdoor sensor), w/Electric Backup (outdoor sensor attached), w/Gas Backup (dual fuel; outdoor sensor attached). . . Use the Up/Down arrow buttons to adjust the hold setpoint. . . . . . . (u(Un!-u\}Y/6[23>,YK @$@. -Pz3`H&G(N,1Pj>5V~v>>wC59-UKTG1+ w4(+3~C|NW[c{[". . . 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. Programmable & Non-Programmable Thermostats. . . This website is using a security service to protect itself from online attacks. . . . . It's a Lennox 51m37. . . In emergency heat mode, only the backup heat source provides heat the heat pump is disabled. . . Under some abnormal conditions, it may be necessary to. . The 5-watt light bulb draws too much current from the 115-voltage line, damaging the bulb and the line. Both the minimum compressor OFF timer and the minimum equipment cycle timer can be overridden by pressing and holding either the HEAT or COOL button down for 4 seconds. . . At any time the program is running, from the HOME screen, set a temporary 2-hour hold by pressing the Up/. Can indoor air humidity affect asthma and other respiratory ailments? Day selections are abbreviated as MO , TU", WE", TH", FR", SA", and SU". Thermostat memory is retained for a minimum of 24 hours during a power loss (includes retention of program information, HOLD status, programmed temperature setpoint, heat/cool and fan mode settings, filter reminder status, maintenance reminder status, and equipment protection timers). . A balance point setting of zero disables the balance point function (in this case, the thermostat behaves as if no outdoor sensor is attached). . Can I use my chimney with my new furnace. The default temperature setpoint in Hold mode is 70F. . DIP switch; see figure 18) Display range: 35F (2C) to 99F (37C) Display resolution: 1F (1C) Display Accuracy: +/1F. . . Wiring Loose connections, disconnections, and faulty or aging wiring can cause a thermostat to lose its connection to their heating and cooling systems causing an interruption in service. What are some sources of chemicals in the home? 6, Default Thermostat Settings . The 51M37 is suitable for heat pump, 3-stage heat/2-stage cool applications using a gas or electric auxiliary heat source. . SETTINGS Filter and Maintenance Reminders, All display segments are momentarily activated. Use UP or DOWN arrow buttons to display the current day. . 0000017352 00000 n 0000007136 00000 n . Is there really a difference between air conditioner and heat pump sound levels? . The RESET button can be used to recover from this situation. . AM 6:00", period A", and the 5 consecutive days are displayed; AM 6" flashes. To install 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. After the desired setpoint is reached, the HOME screen will reappear after about 15 seconds. It is back today, Hi, the power to my house went off last night. . ( AM" or PM" must correspond to time of day.) Programmable & Non-Programmable Thermostats. Call: +44 1782 576800 Radwell is not an authorized distributor, reseller or representative of the products featured on this website. . . . . . . if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,100],'climesense_com-box-4','ezslot_6',112,'0','0'])};__ez_fad_position('div-gpt-ad-climesense_com-box-4-0');When the thermostat demands warmth, the inducer motor comes on to guarantee there are no restrictions on exhaust and intake vents. . . 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. . . . The main breakers have been Reset and it still isn't coming on. . The thermostat now functions much like a nonprogrammable thermostat. . . service. What is the best indoor air quality product? . When your furnace blinks red repeatedly, you know something is wrong. . . . Does the SLP98V gas furnace solve that problem? 1, COOL Cool Mode . What is the difference between R-22 and R-410A refrigerants? Refer to the installation manual for instructions re-. . CMav@* Luckily, if your furnace is malfunctioning or giving you hiccups from time to time, some essential tricks can help you troubleshoot it with relative ease. . The default setting for the reminders is OFF (disabled). Find a nearby store using a city or zip/postal code above. . What are some of the health effects of carbon monoxide? SETTINGS Filter and Maintenance Reminders. . Look for a raised switch or button when removing the front panels of the furnace. . . . . . . Find a nearby store using a city or zip/postal code above. Large rubber buttons and a backlit display permit to quickly find the right settings. . . . . Under some abnormal conditions, it may be necessary toreset" the thermostat to its default condition. . . Read the operation manual on this page to properly set up the operation of the programmable digital thermostat. 1.Press and release PROG. If you need a specific firmware or series relating to 51M37, we probably have it. . . . Not a member? . A clogged drain may cause the furnace to stop working, as well as a short circuit in the circuit board, blower motor, poor air quality, and furnace rusting. . . . . . . . Not a member? . . . . . . Press the DAY/TIME button and set the CURRENT hour, minute, and day of week as follows: 1.AM12" will flash on the screen. User Manuals, Guides and Specifications for your Lennox 51M37 Thermostat. 0000016120 00000 n 0000004428 00000 n . trailer . 5, Service Indicator . . What are the health risks of household chemicals? . 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). Make sure to turn off the circuit breaker switch corresponding to the furnace. . . The critical components of a Lennox furnace are the heat exchanger, blower, humidifier, thermostat, and auxiliary controls. . CurrentCopyrightYear Lennox International Inc. . . . A Lennox furnace requires regular maintenance to keep it running efficiently and optimally. NOTE The HOME screen will reappear about 15 seconds after the final arrow button press. . . . The SLP98V gas furnace claims to be the "most efficient and quietest furnace you can buy." These optional reminders are not enabled until you activate them. To alter the 5 consecutive days, press and hold the PROG button for 5 seconds. . 51M37 Manuals . Enter your email address and check your inbox. The existing 5 consecutive day period is then displayed (default is MOnday thru FRiday). . . . . . . Consult authorities, Check equipment for shipping damage. . . . . With a large HEAT demand, temperature is: less than setpoint 1.5F. . . . . Table 5 depicts the 51M37 thermostat output states for various input conditions. SBBP: outdoor temperature is below balance point, SABP: outdoor temperature is above balance point, SIn all cases, the state of the B terminal is opposite that of the O terminal, SData are tabulated for AUTO fan setting. Electronic programmable thermostat for 2Stage (gas or electric) Heat/2-Stage Cool, nonheat pump, nonpower robbing applications. . Press DAY/TIME. . This is indicated by COOL in the SYSTEM box (see figure 9). . These instructions are intended as a generalguide and do, Check equipment for shipping damage. The thermostat must be in either normal or emergency heat mode in order to properly control the heating equipment. . . . Press DAY/TIME. . . after an electrical storm or power outage). . OR, press ENTER at any time to store any changes and exit to the HOME screen. . 2.Minutes will flash. . The SERVICE indicator is displayed only under the following conditions: Sif the thermostat Y1 terminal has been activated with. 0000006509 00000 n . . . Is there a way to repair this unit? . . . . . . . . garding installation and wiring of the thermostat. . 1, Buttons, Backlight, Timers & Settings . 8, Thermostat Output Table . . This indicates that the equipment requires service from a qualified service technician. . . . What kind of pollutants do the PureAir and PureAir S systems remove? . 0 . . . . . How is a home air purification system different from a filtration system? . It's also easy to find an expert Lennox dealer who can help you make the most of your HVAC system. . . . When it comes to furnace troubleshooting, there are a lot of different things that can go wrong. 5, PROG Thermostat Programming . . Non-programmable model available for ease of use in basic applications. 8. Default thermostat settings are in table 2 and the default program is shown in table 3. The bottom compartment houses a see-through glass disc that displays the fault code. Consult authorities, Check equipment for shipping damage. . . Start making changes within. . . . . . . . To program events and temperatures, perform the following steps, once with Cool selected and once with Heat selected. . . . . Its best to seek professional help in your area if you cannot mitigate the pros yourself. . . Lennox 51M37 List of available manuals, guides and instructions for Lennox 51M37 Merit programmable digital thermostat. . Call a Lennox technician to save the day if its something beyond your skillset or you dont have the right tools. Within a few seconds, the Home Screen appears (see figure 2) with default settings as shown. . . The remaining 2 days can then be set for a different set of 4 unique events per day. . I have a 51M37 Lennox thermostat and the display is blank/dark. Lennox Residential has all the answers to your home heating and cooling, SunSource solar energy system, air conditioner and furnace questions. Heating operation is indicated by a flame icon in the SYS-. Heating operation is indicated by a flame icon in the SYSTEM box. Who is responsible for making sure that my system is matched? . 0000004165 00000 n 1, Initial Thermostat Power-up . This overrides the program for 2 hours from the last button press, then returns to the program. When the actual temperature drops below the temperature setpoint, the snowflake icons will disappear. . This completes day and time setting. . . . . . . . . Thermal-mechanical switch opens W1, Y1, Y2, and E at. 2.Minutes will flash. Database contains 1 Lennox 51M37 Manuals (available for free online viewing or downloading in PDF): Operation manual . . . . Make sure to suck the drain with a vacuum to unblock it. . Minimum furnace cycle time (elapsed time between any furnace activation and the next furnace activation): 6 minutes. Also when I snapped the new one in will everything just start up image.jpg If the Fahrenheit/Celsius display must be changed, use a plastic, nonconductive tool to push the dip switch to the right position (see figure 22). 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If there is a problem with any of this component or if you suspect something isnt working correctly, its best to troubleshoot and reset the unit to operate as intended. The HOME screen reappears; confirm day and time are correct. . When power is initially applied to the thermostat, the dis-. When power is initially applied to the thermostat, the dis-. Sampling Method: temperature measurements sampled every 15 seconds. 3, HOLD Temperature Hold Mode . Can indoor air humidity levels have an impact on my energy bills? . . Initial Thermostat Power-up. . After about 1 minute of initialization time, the actual room temperature will be displayed. How do I register my product? . AUTO or ON modes, gas or electric heat compatible via DIP switches (also see Thermostat Output section). . 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. 0000003152 00000 n . . Thermostat 51M35 is suitable for non-heat pump, twostage heat/two-stage cool applications using a gas or electric furnace. How do I know which indoor air quality product is right for me? . 0000017557 00000 n 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. This indicates that the equipment requires service from a qualified service technician. . Cloudflare Ray ID: 7b9d43d12969cab8 What are the benefits of installing a whole-house humidifier? . . . . . . . . Call or text 888-757-4774 + . . When power is initially applied to the thermostat, the dis-. . . . . The 51M37 thermostat can be programmed to perform a set of either heating or cooling events (but not a combination of heat and cool) for 5 consecutive days using a set of 4 unique events per day. This may have links to the furnace problem. . 0000005225 00000 n . The thermostat must be in the HEAT mode to control the heating equipment. Installing the wrong kind of thermostat is likely to cause miscommunication and result in system failure. 0000004959 00000 n . . . . You can email the site owner to let them know you were blocked. Started yesterday I took the back off - Answered by a verified HVAC Technician . 7, Thermostat RESET . Check these common issues before calling a maintenance professional if your Lennox furnace isnt working as it should. 0000004694 00000 n . Weak or non-existent, gas or electric furnace is blank/dark Fahrenheit units may! The reset button can be done about detecting carbon monoxide in the thermostat be... 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