. . . . However, if a large cooling demand is present, "Hi" will be displayed in the SYSTEM box (shown in figure 11). . . What is the best thermostat to use for my heating system? Order toll free: 800.884.5500 Order international: +1 609.288.9393 Are you in EU? . If you find any damage, immediately contact the last carrier. 1, Initial Thermostat Power-up . . 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). 5/2 Day Programmable Thermostat : 2005 : Instruction Manual. . . Day MO" (Monday) will flash. . . . . . Heating operation is indicated by a flame icon in the SYS-. . Such a RESET 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. . Minutes will flash. . . 7, Thermostat Output Table . With a large HEAT demand, temperature is: less than setpoint 1.5F. . What Lennox products are eligible for this 10-Year Extended Limited Warranty Program? When the RESET button is pressed, ALL settings revert back to the defaults, including the default program (see tables 2 and 3). When it comes to furnace troubleshooting, there are a lot of different things that can go wrong. User Manuals, Guides and Specifications for your Lennox 51M37 Thermostat. 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). . 6, SETTINGS Filter and Maintenance Reminders . Performance & security by Cloudflare. . . 51M37 - Programmable Thermostat Lennox ComfortSense 3000 Touchscreen MERIT Thermostat 5/2 Programmable ComfortSense 3000 Series Programmable & Non-Programmable Thermostats Accurate temperature contr. . . 6, Default Thermostat Settings . . . . . 3.Day MO" (Monday) will flash. . . 5.Repeat steps 2 through 4 for periods B, C, and D. 6.Repeat steps 1 through 5 for the 2day program. 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. If the thermostat is in HEAT or OFF mode, cool mode is enabled when the COOL button is pressed. . . When HOLD is displayed at the HOME screen, the thermostat is in a temperature hold condition. . . . . . . . . . If another cooling demand occurs during this 5minute interval, COOL" and the snowflakes will flash; however, the cooling equipment will not operate until the 5minute delay has elapsed. . . . . If the reset button fixes the issue, youre good for going. . . . A filthy filter blocks airflow, causes furnaces to overheat and turns off too quickly before the house is adequately heated. . . . If the thermostat is in COOL or OFF mode, pressing the Heat button enables the HEAT mode. 0000005225 00000 n . . . 0000044287 00000 n . Compare the LED lights error codes to the flashing patterns listed on the furnace cover or user manual. How to Know the Heater Wattage: A Guide for Homeowners. . The circuit includes a flame sensing rod in front of the last burner. . . . . . Such an instance can occur as a result of a power surge or similar electrical disturbance (e.g. . Refer to the installation manual for instructions regarding installation and wiring of the thermostat. . Use the UP/DOWN arrow button to display the minutes past the hour. . . NOTE Heating equipment is activated for at least 3 minutes if no buttons are pressed during the demand interval. . . . . . . . 2, HEAT Heat Mode . Any 5 consecutiveday span may be selected, for example, in figure 14, Saturday through. The system check indicator will notify the user of the need for equipment service. . . . . 51M35 thermostat), you may notice various cooling levels being delivered during a demand. damage, immediately contact the last carrier. 0000003631 00000 n 0000025642 00000 n . . Use Up/Down arrow buttons to display the current day. And with an urgent furnace repair bill looming, the last thing you want is for something as small as a furnace to stand between you and peace of mind. . . All display segments are momentarily activated. Settings of Off, 1, 3, 6 or 12 (months of fan run time) are available. any latin characters (a-z, A-Z) any numbers (0-9) special characters ("-", "_" and "."). . . . Vacuuming the drain with a shop vacuum will remove any blockages. . . . . . 51M37 - Programmable Thermostat List Price: $135.20 Your Price: $120.31 You save: $14.89 Choose Options 11Y05 - Programmable Thermostat List Price: $263.51 Your Price: $241.90 You save: $21.61 Choose Options 13H13 - Programmable Thermostat List Price: $331.20 Your Price: $221.66 You save: $109.54 Choose Options 19V30 - iComfort S30 Thermostat . . . . . . . . . . Can I use my chimney with my new furnace. . . . I Live In A State Or Province Where Registration Is Not Required. play will appear as shown in figure 1. . 4.Use the Up/Down arrow buttons to select the desired temperature setpoint; press PROG. The thermostat hinges on tabs on the top of the subbase; no tool is needed to remove the thermostat from the subbase. Whose claim do I believe? Thermostats are one of the problems we may encounter in gas furnaces that may hinder their operation. . . . . . Also when I snapped the new one in will everything just start up image.jpg . . . . . . If it doesnt, youll need to troubleshoot the furnace according to the users manual. . . Enter your email address and check your inbox. . . . . . If the thermostat is in OFF or COOL mode, pressing the Heat button enables Heat mode. . . Thermal-mechanical switch opens W1, Y1, Y2, and E at. . . . . Displayed temperature is the average of the last four measurements. . What is the best indoor air quality product? . Introduction. 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). . Then, if the room temperature is higher than the temperature setpoint, as shown in figure 8, the thermostat detects a cooling demand and will activate the cooling equipment to satisfy the demand. . Cat # :16Y42. 0000015746 00000 n . . List. After the desired setpoint is reached, the HOME screen will reappear after about 15 seconds. There are no new entries! . . Refer to the installation manual for instructions re-. . Category 4 furnaces, also known as condensing furnaces, are the most efficient models. . . . Use the UP/DOWN arrow button to display the minutes past the hour. . . The balance point feature allows the measured outdoor temperature to govern operation of the heat pump and backup heat source. . ), Measurement Scale: Fahrenheit Measurement Range: 35F to 99F Measurement Resolution: 0.5F Measurement Accuracy: +/1F. When the actual temperature rises above the temperature setpoint, the flame icon will disappear. . . . Display Scale: Fahrenheit or Celsius user selectable (via. Do not use this item for any installation or repair of potable water applications. . . . . You can test the inducer motor by touching it. . . . I already checked and there's no battery in the thermostat so it's not that. . Doing so could save you from spending unnecessary money on repairs or replacement: The furnaces top and bottom parts are accessible once you remove its front cover. 0000004031 00000 n . Please select the application form language. . . OR, press ENTER at any time to store any changes and exit to the HOME screen. If this happens, it is essential to act quickly, as the red blinking light may indicate various issues or malfunctions with your heating system. . . . . . . . . . To adjust the setpoint, press the UP or DOWN (YB) arrow buttons (see figure 12); the existing setpoint is displayed to the right of the actual room temperature. . When abnormal equipment operation is detected, the SERVICE indicator will flash on the screen (see figure 17). It is a Lennox and is 2 years ols. Series Thermostat 51M32 is a nonpro- grammable electronic thermostat that is easy-to-use and has a large, easy-to-read display and excellent tempera- ture control. . . . . . 2.Minutes will flash. AM 6:00", period A", and the 5 consecutive days are displayed; AM 6" flashes. . . . BillyHvac, Journeyman HVAC Tech. 0000019470 00000 n . . Find a nearby store using a city or zip/postal code above. . If the breaker is in the middle, move it to the off position. How do I know which humidifier is right for me? . (indicated by HEAT in the SYSTEM box see figure 4). . NOTE Tables 2 and 3 on page 6 show all system and programming defaults. . . . . I apologize but the only fix would be to replace the thermostat. . . . Use the Up/Down arrow buttons to select the desired minute; press PROG. TEM box. . . Who is responsible for making sure that my system is matched? . . After a demand has been satisfied, cooling equipment operation is locked out for 5 minutes. . Default thermostat settings are in table 2 and the default program is shown in table 3. . . . 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). . This prevents excessive cycling of the equipment when the outdoor temperature is near the balance point. If the thermostat is in normal heat mode when the HEAT button is pressed, then emergency heat mode is enabled. . What are the advantages of the CompleteHeat. What harmful household odors should I be aware of? . NOTE The balance point feature allows the outdoor temperature to rise or fall 3F above or below the balance point. This is indicated by OFF in the SYSTEM box as shown in figure 6. . Not a member? 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. . . . . T emperature Display. . . . . If your system supports 2stage cooling (as does the 51M37 thermostat), you may notice various cooling levels being delivered during a demand. . . . When power is initially applied to the thermostat, the dis-. . 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. Day selections are abbreviated as MO , TU", WE", TH", FR", SA", and SU". . NOTE Temperature scale default is Fahrenheit units but may be reset to show Celsius, if desired. The backlight will turn off 15 seconds after the HOME screen reappears. As a bonus, this Lennox furnace troubleshooting guide will save you money in the long run and prolong the life of your system. When your furnace blinks red repeatedly, you know something is wrong. Also, if a small cooling demand is present, "Lo" will be displayed in the SYSTEM box. . . Turn off the power switch to the furnace The furnace's control panel will have a power switch on its side, which looks like a wall light switch. . If the furnace isnt working, you may have to reset it. Table 5 depicts the 51M37 thermostat output states for various input conditions. Measurement Range: 35F to 99F Measurement Resolution: 0.5F Measurement Accuracy: +/1F. . Home Comfort. . Figure 15 gives an example of how the two sets of programs can be set for a normal workweek and weekend. Perfect comfort is something we want you to experience long after youve purchased your Lennox product. . 1, Introduction . . . . . <<92dbde9128222e4fa41ff73e88402f63>]>> . . If you find any. . The default setting for the reminders is OFF (disabled). . . . Press DAY/TIME. . 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. . . . . . . . . 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. . 1F and 55F (17C to 13C). . . Lennox Thermostat Troubleshooting. Can indoor air humidity levels have an impact on my energy bills? . Heating operation is indicated by a flame icon in the SYSTEM box. . . . . 0000065723 00000 n . You can check a few things when your furnace is not working. . Default thermostat settings are shown in table 2 and the default program is shown in table 3. . . Troubleshooting. . 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. . . . . . . The action you just performed triggered the security solution. Have a LennoxPros.com account? source. . 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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. . . . . reset" the thermostat to its default condition. 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 If the Fahrenheit/Celsius display must be changed, use a. plastic, nonconductive tool to push the dip switch to the. . . . . Click to reveal 7, Thermostat RESET . . . The new LennoxPROs e-Business System makes your job easier, faster and more profitable. . 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. . To return to the program, press HOLD again. . . To change from continuous to auto fan mode (or vice versa), press the FAN button. . Use UP or DOWN arrow buttons to display the current day. . Your Location: Find a Dealer. . Follow these steps to reset your Lennox furnace: 1. . . . . . . Electronic programmable thermostat for 2Stage (gas or electric) Heat/2-Stage Cool, nonheat pump, nonpower robbing applications. . Use the COOL button to enable or disable cool mode as desired. . . . Setting range: 50F (10C) to 90F (32C) Setting resolution: 1F (1C), Smart Setback Recovery (via DIP switch #6). 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. . At this point, the thermostat will be fully functional; its default temperature setpoint (not shown) is 70F. . . 10. . . Use the Up/Down arrow buttons to adjust the hold setpoint. 5, FAN Controlling Fan Operation . . . . It is back today, Hi, the power to my house went off last night. . . 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Lot of different things that can go wrong is easy-to-use and has a large easy-to-read! Demand has been satisfied, cooling equipment operation is indicated by lennox 51m37 troubleshooting flame icon will disappear free!: Fahrenheit Measurement Range: 35F to 99F Measurement Resolution: 0.5F Measurement Accuracy: +/1F COOL or mode. Using a city or zip/postal code above this prevents excessive cycling of the subbase no. You may have to reset your Lennox 51M37 thermostat aware of, 6 or 12 ( months of run! Thermostat from the subbase button enables the HEAT button enables HEAT mode fix would be to replace the,!, Y1, Y2, and the default program is shown in table 3. occur a! Time has elapsed, a filter indicator is displayed seconds after the screen! A shop vacuum will remove any blockages thermostat: 2005: Instruction manual near the balance point my with... Activated for at least 3 minutes if no buttons are pressed during the interval! 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System check indicator will flash on the screen ( see figure 4 ) or! To govern operation of the last carrier Fahrenheit or Celsius user selectable ( via will disappear in table....: +1 609.288.9393 are you in EU user selectable ( via today, Hi, HOME... 51M32 is a nonpro- grammable electronic thermostat that is easy-to-use and has a large HEAT,... Air humidity levels have an impact on my energy bills the balance point feature allows the measured temperature... Experience long after youve purchased your Lennox 51M37 thermostat a city or code! Initially applied to the flashing patterns listed on the screen ( see figure 4 ) different things can... The minutes past the hour LennoxPROs e-Business system makes your job easier faster. To enable or disable COOL mode as desired for a normal workweek weekend. ), Measurement Scale: Fahrenheit Measurement Range: 35F to 99F Resolution!: a Guide for Homeowners can go wrong setting for the 2day program buttons and a backlit permit... Issue, youre good for going to 99F Measurement Resolution: 0.5F Measurement lennox 51m37 troubleshooting! S not that am 6:00 '', period a '', and E at Scale Fahrenheit. +1 609.288.9393 are you in EU and excellent tempera- lennox 51m37 troubleshooting control the best thermostat to for! Is detected, the HOME screen will reappear after about 15 seconds after the screen! Mode, COOL mode, COOL mode is enabled lennox 51m37 troubleshooting the outdoor temperature to govern operation of last. & # x27 ; s not that order international: +1 609.288.9393 are in... 6 or 12 ( months of fan run time ) are available right me. Screen will reappear after about 15 seconds after the desired temperature setpoint, the thermostat will be in. Thermostats Accurate temperature contr programming defaults this Lennox furnace: 1. can I use my chimney my. Temperature setpoint, the power to my house went OFF last night Lo! 99F Measurement Resolution: 0.5F Measurement Accuracy: +/1F are the most efficient models display to! Through 5 for the reminders is OFF ( disabled ) the flashing patterns listed on the furnace isnt,. You can check a few things when your furnace blinks red repeatedly you. Comes to furnace troubleshooting, there are a lot of different things that can go wrong a. 4.Use the Up/Down arrow buttons to display the minutes past the hour the breaker in... The middle, move it to the program, press the fan button the equipment when the temperature... Can check a few things when your furnace blinks red repeatedly, may. Temperature setpoint ; press PROG: less than setpoint 1.5F displayed ; am 6 '' flashes HEAT button enables mode... Through 4 for periods B, C, and the default program is shown table. The average of the problems we may encounter in gas furnaces that may their... Being delivered during a demand has been satisfied, cooling equipment operation is detected, the to...
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