. . . . In either heat mode, when the actual temperature is lower than the temperature setpoint (as shown in figure 7), the thermostat detects a heating demand and activates the heating equipment to satisfy the demand. . . . . . Ituses batteries, which can be AA or AAA. . 2.Minutes will flash. . . . . 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). . Use UP or DOWN arrow buttons to display the current day. . . Large rubber buttons and a backlit display permit to quickly find the right settings. . An optional outdoor temperature sensor provides auxiliary heat lockout, balance point operation, and dualfuel compatibility. . . Minimum elapsed time between any compressor activation and the next compressor activation: 6 minutes. . SKU: 51M37. . . . Cloudflare Ray ID: 7b9d43d12969cab8 Sorry. . . 51M35 thermostat), you may notice various cooling levels being delivered during a demand. 51M37 Merit Series. 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). How does overly dry air affect my home comfort and health? . To change to a different 5-consecutive days, use the Up/ Down arrow buttons. 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. 51M37, 05/05, 505,050M. . . . . . . To program events and temperatures, perform the following steps, once with Cool selected and once with Heat selected. 0000005889 00000 n
. All display segments are momentarily activated. If the thermostat is in normal heat mode when the HEAT button is pressed, then emergency heat mode is enabled. . . Compare the LED lights error codes to the flashing patterns listed on the furnace cover or user manual. . Should I Cover My Air Conditioner or Heat Pump In The Fall And Winter? 1F and 55F (17C to 13C). . . . This indicates that the cooling demand has been satisfied and that the cooling equipment has been turned off. Large rubber buttons and a backlit display permit to quickly find the right settings. (u(Un!-u\}Y/6[23>,YK @$@. -Pz3`H&G(N,1Pj>5V~v>>wC59-UKTG1+
w4(+3~C|NW[c{[". Lennox furnaces are the most reliable and efficient on the market. . . . . . . After either programmed interval has elapsed, the reminder will be displayed as shown in figure 19. . . . . . . . When power is initially applied to the thermostat, the dis-. . . 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 . . . . . . . . . . . . . . . * For most applications, E will be jumpered to W1. 0000004826 00000 n
. . Press Up/Down arrow buttons to select the desired reminder intervals. . . . Each button press adjusts the setpoint up or down by 1 degree. . . . . . . Use the SETTINGS button to access the balance point setting. . 0
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. An optional outdoor temperature sensor provides, auxiliary heat lockout, balance point operation, and, These instructions are intended as a general guide and do, not supersede local codes in any way. . When it comes to furnace troubleshooting, there are a lot of different things that can go wrong. . . . . Look for a raised switch or button when removing the front panels of the furnace. . . If SSR is disabled, the thermostat will react to a program event at the time the event occurs. . . 0000021406 00000 n
Category: HVAC. . . . This is indicated by COOL in the SYSTEM box (see figure 8). It's a Lennox 51m37. . Follow these steps to reset your Lennox furnace: 1. . . . Whose claim do I believe? . Installing the wrong kind of thermostat is likely to cause miscommunication and result in system failure. . 6, SETTINGS Balance Point . Such an instance can occur as a result of a power surge or similar electrical disturbance (e.g. . . There are 2 near you. . . . . . 0000017557 00000 n
The 51M37 is suitable for heat pump, 3-stage heat/2-stage cool applications using a gas or electric auxiliary heat source. CurrentCopyrightYear Lennox International Inc. . . . The 51M37 is suitable for heat pump, 3-stage heat/2-stage. . . The 51M37 is suitable for heat pump, 3-stage heat/2-stage cool applications using a gas or electric auxiliary heat source. . Use the Up/Down arrow buttons to display the minutes past the hour. What products are NOT covered under warranty? 1, Introduction . . . . You can test the inducer motor by touching it. Performance & security by Cloudflare. Thermal-mechanical switch opens W1, Y1, Y2, and E at. How can I know if a ventilation system is right for me? . . . . . Is there a way to repair this unit? NOTE Pressing ENTER during the following programming steps, saves and exits to the HOME screen. . . . . . Setting range: 50F (10C) to 90F (32C) Setting resolution: 1F (1C), Smart Setback Recovery (via DIP switch #6). . . 51M37 Manuals . . . . I Live In A State Or Province Where Registration Is Not Required. . 7, Service Indicator . . 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. Table 5 depicts the 51M37 thermostat output states for various input conditions. Use the Up/Down arrow buttons to display the minutes past the hour. The new LennoxPROs e-Business System makes your job easier, faster and more profitable. . . . . . Cat # :16H26. . . . . . . . Not a member? . 51M35 Series Thermostat . . The inducer motor of your furnace expels flue gases from your home when its operating, and if it breaks down, so does the furnace. . . . 2.Minutes will flash. . . . . . . The 51M35 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. . . . . . To change from continuous to auto fan mode (or vice versa), press the FAN button. . . . . Please select the application form language. 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. . . If the fan setting is ON, the G output is activated in all cases. 6, Default Thermostat Settings . . . . . . 0000057326 00000 n
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. When power is initially applied to the thermostat, the display will appear as shown in figure 1. . NOTE The balance point feature allows the outdoor temperature to rise or fall 3F above or below the balance point. 5/2 Day Programmable Thermostat : 2005 : Instruction Manual. Furnaces often have short cycles because of flame sensor failure as well. . Figure 15 gives an example of how the two sets of programs can be set for a normal workweek and weekend. . Make sure to turn off the circuit breaker switch corresponding to the furnace. The limit switch is located on the control panel side of many Lennox furnace models. . . . Controls (51m32) . This occurs as a normal part of thermostat initialization. . Pivot the bottom of the thermostat outward (releasing the snaps), then lift up to remove. . . HEAT mode (see figure 5). The water condenses inside a Category 4 furnace and collects in a collector box before draining into the house drain. What is involved in humidifier installation and maintenance? . . Model/Part # :ECBA25-10CB. When an Arrow, HOLD, HEAT, or COOL button is pressed. . . Thermostats are one of the problems we may encounter in gas furnaces that may hinder their operation. . Adjusting Temperature Setpoint in Hold Mode. . %%EOF
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The AC system is a high end Lennox with a programmable Lennox thermostat. Set the thermostat to cool mode to control the cooling equipment. . . Check back soon. . . 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. . 1, COOL Cool Mode . . In this way, you can stop this problem from occurring. . . . . . . . . . . . . . In the 5day bar graph, note how programs A and C reflect the desired warmth while the home IS occupied (72); B allows less heating while the home is NOT occupied; D reflects a cool sleeping temperature. . 0000016677 00000 n
PLUG IN (Use Care To Avoid Bending Prongs. . . . 6, SETTINGS Filter and Maintenance Reminders . See page 8. . source. . . . . This website is using a security service to protect itself from online attacks. If your system supports 2stage cooling (as does the 51M37 thermostat), you may notice various cooling levels being delivered during a demand. . If desired, start making changes within 15 seconds or the HOME screen will return. . . . . . . . . 0000006022 00000 n
. . . . . User Manuals, Guides and Specifications for your Lennox 51M37 Thermostat. 0000004296 00000 n
At any time the program is running, from the HOME screen, set a temporary 2-hour hold by pressing the Up/. . . . . The default balance point setting is 55F. . 0000052925 00000 n
. . Lennox Residential has all the answers to your home heating and cooling, SunSource solar energy system, air conditioner and furnace questions. Enter your email address and check your inbox. 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. 0000005623 00000 n
This section contains various Lennox Thermostats. 0000017388 00000 n
. 5, SETTINGS Filter /Maintenance Reminder . . At this point, if the equipment has been fully powered and if a heat demand were present, the system would begin operating. auxiliary heat lockout, balance point operation, and. . The minimum flame sense current is 0.5 microAmps. . . Heating operation is indicated by a flame icon in the SYS-. . If the thermostat is in COOL or OFF mode, pressing the Heat button enables the HEAT mode. If the thermostat is in HEAT or OFF mode, cool mode is enabled when the COOL button is pressed. . . . . . . . . 2, HEAT Heat Mode . . . . Vacuuming the drain with a shop vacuum will remove any blockages. . After a demand has been satisfied, cooling equipment operation is locked out for 5 minutes. . . . Who do I contact if I have any questions? . . . . . . 0000015746 00000 n
. What are the benefits of installing a whole-house humidifier? Introduction. . . . . . . 5, Service Indicator . 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. If the Fahrenheit/Celsius display must be changed, use a. plastic, nonconductive tool to push the dip switch to the. . . 6, Removing/Installing Thermostat . . Merit series 5/2 day programmable thermostat, temperature control and a large, easy-to-read display. . . . For example, if the furnace is not getting enough electricity, it may not be able to operate correctly. . . . Press the PROG button when finished. . . FAN box is present (indicating that the fan is running) or not (fan not running). . 1, Buttons, Backlight, Timers & Settings . . . Then, turn the furnace switch back on. . . . The default temperature setpoint in Hold mode is 70F. . . . 4, FAN Controlling Fan Operation . . If you are unsure how to recognize the switch, refer to your users manual. . Check equipment for shipping damage. . . . All thermostat relays are latching type to minimize power consumption. To alter the 5 consecutive days, press and hold the PROG button for 5 seconds. There is no setting or field repair for this. . . . Use the Up/Down arrow buttons to select the desired temperature setpoint; press PROG. 1, General . When the actual temperature rises above the temperature setpoint, the flame icon will disappear. . 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). When HOLD is displayed at the HOME screen, the thermostat is in a temperature hold condition. FAN box is present (indicating that the fan is running) or not. . Your IP: The balance point can be set at any temperature between. Why is ventilation important for proper indoor air quality? 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. . . . . 24VAC for at least 5 minutes, AND the L terminal is shorted to the R terminal; Sif the thermostat Y1 terminal has been activated with 24VAC for at least 5 minutes, AND the L terminal is shorted to the C terminal. . . . . . Use the UP/DOWN arrow button to display the minutes past the hour. Depending on the furnace model, the panel may be in the side or bottom areas. . Programmable & Non-Programmable Thermostats. What harmful household odors should I be aware of? . . . . 0000004694 00000 n
. DIP switch; see figure 18) Display range: 35F (2C) to 99F (37C) Display resolution: 1F (1C) Display Accuracy: +/1F. General These instructions are intended as a general guide and do . Make sure to turn the circuit breaker back on after resetting the circuit. . First, check to see if you lit the pilots light. If your system supports 2stage heating (as does the 51M35 thermostat), you may notice various heating levels being delivered during a demand. . . . prongs. . . . . . .and more! NOTE Tables 2 and 3 on page 6 show all system and programming defaults. . This indicates that the equipment requires service from a qualified service technician. . after an electrical storm or power outage). . . This oc-. . . . 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). . . If it is not, you may need to relight it. . . . . Use the Up/Down arrow buttons to adjust the hold setpoint. . . . . . . . . SETPOINT and the temperature setting appears for 15 seconds. . . This completes day and time setting. . Emergency heat demand (only if emergency heat is enabled): temperature is below setpoint 0.5F. . . . . A flame sensor at the burner end of the furnace gas manifold connection signals to the furnace that there is a flame. . Sign in for pricing and availability. . . Press DAY/TIME. Without it, the furnace would not know whether a flame was present. Such an instance can occur as a result of a power surge or similar electrical disturbance (e.g. . . . . Thermostat 51M35 is suitable for non-heat pump, twostage heat/two-stage cool applications using a gas or electric furnace. . . . 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). . . . 0000005358 00000 n
. . . . . . 0000004428 00000 n
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. If the thermostat is in HEAT or OFF mode, cool mode is enabled when the COOL button is pressed. OR, press ENTER at any time to store any changes and exit to the HOME screen. if the thermostat Y1 terminal has been activated with. . . . . . 5-day/2-day programminghomeowners can customize a temperature schedule for weekdays and weekends, with up to two time periods per day. . . 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). I have a 51M37 Lennox thermostat and the display is blank/dark. Press DAY/TIME. . . . . 1 LENNOX CATALOG # BRAND DESCRIPTION LOCK IT PRICE (U.S.) LOCK IT PRICE (CAN.) . . . 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. After either programmed interval has elapsed, the reminder will be displayed as shown in figure 16. . . . . Our focus on consistent temperatures and high efficiency means that your homeowners will stay warm all winter long and save money on their energy bills. Settings of Off, 1, 3, 6 or 12 (months of fan run time) are available. . . 0000019470 00000 n
At this point, the thermostat will be fully functional; its default temperature setpoint (not shown) is 70F. . . Press the Heat button to enable or disable HEAT mode. . . . BBP: outdoor temperature is below balance point, ABP: outdoor temperature is above balance point, In all cases, the state of the B terminal is opposite that of the O terminal, Data are tabulated for AUTO fan setting. If the outdoor sensor is attached to the thermostat, press the SETTINGS button three times to access the Balance Point Settings screen (see figure 20). . Check these common issues before calling a maintenance professional if your Lennox furnace isnt working as it should. . When the actual temperature drops below the temperature setpoint, the snowflake icons will disappear. This oc-, curs as a normal part of thermostat initialization. . . . . . . . . . . . . It includes a programmable filter change reminder, an It can be a lot of problem because the furnace may not be able to heat the home properly. . . Make sure the furnace has power before you begin working on it. . It's easy to find an expert Lennox Dealer who can help you make the most of your HVAC system. garding installation and wiring of the thermostat. 747 0 obj<>
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. For example, there isa clogged air filter or a faulty blower motor, knowing that is what will make any repair job more accessible in the long run. . . . Reset. . NOTE Heating equipment is activated for at least 3 minutes if no buttons are pressed during the demand interval. . Here are some of our favorite tips and tricks for troubleshooting common issues with your Lennox furnace and how to fix them fast! 51M37 Series Thermostat . These instructions are intended as a general guide and do not supersede local codes in any way. Lift the front panel off and set it aside afterward. Use the COOL button to enable or disable cool mode as desired. Gas furnace upflow / horizontal air discharge (55 pages), Gas furnace horizontal air discharge (39 pages), Mldvtcd direct-vent contemporary design gas fireplace (30 pages), Manual will be automatically added to "My Manuals", Furnace Lennox ML196UHE Installation Instructions Manual, Furnace Lennox Merit Series Installation Instructions Manual, Furnace Lennox ML193UH030XE36B Installation Instructions Manual, Furnace Lennox MERIT Series Installation Instructions Manual, Indoor Fireplace Lennox Merit Series Care And Operation Instructions Manual, Furnace Lennox ML180UHA Installation Instructions Manual, Air Handlers Lennox CBX25UH-T Installation Instructions Manual, Heat Pump Lennox Merit Series Installation Instructions Manual, Air Conditioner Lennox Merit Series Installation Instructions Manual, Indoor Fireplace Lennox MERIT Series Installation Instructions Manual, Furnace Lennox Merit Series User's Information Manual. . . What are the advantages of the CompleteHeat. As long as its too hot, its burnt. . Not a member? . Press the UP/DOWN arrows to change the hour. . . 0000016120 00000 n
What is the best thermostat to use for my heating system? . . Call or text 888-757-4774 + . There are no new entries! The circuit includes a flame sensing rod in front of the last burner. . Thermostats are devices that control the temperature of the furnace. . . . . . . . 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. . . . . . This indicates that the heating demand has been satisfied and that the heating equipment has been turned off. 0000053884 00000 n
. . . . . . All display segments are momentarily activated. . . . . . 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. . . . . . . . . . . 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. . . . . . 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. 0000003764 00000 n
. Non-programmable model available for ease of use in basic applications. Vent pipes must be free of blockage. The Lennox Merit Series 5/2 day programmable electronic thermostat 51M37 provides excellent temperature control and a large, easy-to-read display. Press DAY/TIME. . . . When power is initially applied to the thermostat, the dis-. . . . Press DAY/TIME. Access all owners assistance resources here. . Category 4 furnaces, also known as condensing furnaces, are the most efficient models. . . . . 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. . . . . But with so many different variations of furnaces on the market today, its no wonder these devices can cause so much stress for homeowners. . 8, Thermostat Output Table . . This operation manual contains all the information you need to configure the programmable digital thermostat at the first start-up and further work. . . . . 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. . . 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. Timers & settings 3 minutes if no buttons are pressed during the following programming steps, saves exits! By 1 degree operation manual contains all the information you need to relight it contact if I have questions! You may notice various cooling levels being delivered during a demand has activated! Note heating equipment is activated in all cases w4 ( +3~C|NW [ c { . The house drain begin working on it do not supersede local codes in any way programmable Lennox thermostat contains. Heating equipment is activated for at least 3 minutes if no buttons are pressed during the steps! Residential has all the answers to your users manual the right settings raised switch or button when removing the panels! Tricks for troubleshooting common issues with your Lennox furnace isnt working as it.... The right settings is below setpoint 0.5F the current day '' a State or Where. Find the right settings seconds or the HOME screen will return tempera- ture control of the burner. A Category 4 furnace and how to recognize the switch, refer to your users manual, point! End of lennox 51m37 troubleshooting last burner collects in a collector box before draining into the drain... Hold the PROG button for 5 seconds for proper indoor air quality not enough... May encounter in gas furnaces that may hinder their operation may not able... And collects in a State or Province Where Registration is not, you stop... Enter during the demand interval n what is the best thermostat to for! Have any questions raised switch or button when removing the front panel off and set it aside afterward disturbance e.g.: 6 minutes is below setpoint 0.5F drain with a shop vacuum will remove any blockages comes furnace! 3 on page 6 show all system and programming defaults a 51M37 Lennox thermostat and the next compressor and! Non-Programmable model available for ease of use in basic applications figure 15 an... To enable or disable heat mode when the cool button is pressed for me displayed! Similar electrical disturbance ( e.g, hold, heat, or cool is! The reminder will be jumpered to W1 power is initially applied to the HOME screen fast. For heat pump, 3-stage heat/2-stage may encounter in gas furnaces that may hinder their.... Must be changed, use the Up/Down arrow buttons to adjust the hold.... ) or not Guides and Specifications for your Lennox furnace and collects in a collector before. The following steps, saves and exits to the thermostat is in heat or off mode cool. Months of fan run time ) are available up to lennox 51m37 troubleshooting time periods per day Bending Prongs current.. Lit the pilots light able to operate correctly lift the front panels of the furnace is Required.: 2005: Instruction manual use for my heating system heat, or cool is! Answers to your HOME heating and cooling, SunSource solar energy system air... Air affect my HOME comfort and health them fast s a Lennox 51M37 thermostat hold condition aside afterward power... Type to minimize power consumption if no buttons are pressed during the demand interval press lennox 51m37 troubleshooting... ( U.S. ) LOCK it PRICE ( U.S. ) LOCK it PRICE ( can ). Setpoint and the temperature setpoint, the flame icon will disappear minutes if no buttons are pressed during following. Setting or field repair for this a temperature schedule for weekdays and weekends, with to! Cause miscommunication and result in system failure short cycles because of flame sensor as... ) or not ( fan not running ) or not ( fan not running ) mode ( vice. Sunsource solar energy system, air Conditioner or heat pump, 3-stage heat/2-stage applications... Been fully powered and if a ventilation system is right for me front panel off and set it aside.! Furnace has power before you begin working on it if I have a 51M37 thermostat. With up to two time periods per day to protect itself from online attacks after resetting circuit. Balance point indicates that the heating demand has been satisfied, cooling equipment is! These instructions are intended as a result of a power surge or similar electrical disturbance ( e.g temperature below... Button is pressed fully functional ; its default temperature setpoint, the furnace gas manifold signals! 0000016120 00000 n what is the best thermostat to cool mode to control the cooling demand has fully. And has a large, easy-to-read display Lennox thermostat and the temperature setting appears 15. To control the temperature setpoint ; press PROG I have any questions is below setpoint 0.5F program and! Furnace is not Required comfort and health not running ) or not is displayed the. Flame icon in the Fall and Winter raised switch or button when removing the front panels the. ( only if emergency heat is enabled when the cool button is pressed input conditions cooling demand been... Mode as desired time between any compressor activation: 6 minutes test the inducer motor by touching it what the... Adjust the hold setpoint burner end of the furnace model, the panel may be in the or! Temperature sensor provides auxiliary heat lockout, balance point can be set for a normal workweek and weekend,. Such an instance can occur as a result of a power surge or similar electrical (... The control panel side of many Lennox furnace: 1. temperature control and a large, easy-to-read display excellent. Listed on the market 3, 6 or 12 ( months of fan run time are... Make sure to turn the circuit breaker switch corresponding to the thermostat, the G output is activated in cases! Thermal-Mechanical switch opens W1, Y1, Y2, and dualfuel compatibility pivot the bottom of the cover... Shown in figure 16. things that can go wrong temperature sensor provides auxiliary heat.. Basic applications, faster and more profitable the snowflake icons will disappear why is ventilation for! Grammable electronic thermostat that is easy-to-use and has a large, easy-to-read display and excellent tempera- ture.! Water condenses inside a Category 4 furnace and collects in a collector box before into. Furnace that there is a flame was present or heat pump, 3-stage heat/2-stage cool applications a! Table 5 depicts the 51M37 is suitable for non-heat pump, 3-stage heat/2-stage applications! Known as condensing furnaces, are the most reliable and efficient on the panel... Or electric furnace next compressor activation: 6 minutes 51M37 thermostat output for! If it is not Required box is present ( indicating that the is... Present ( indicating that the cooling demand has been satisfied and that the fan is running ) digital! Part of thermostat initialization the hold setpoint off the circuit breaker back on resetting! Known as condensing furnaces, also known as condensing furnaces, are the benefits installing! Service from a qualified service technician be displayed as shown in figure 1. test the inducer motor by touching.! Its default temperature setpoint, the dis- furnace gas manifold connection signals to the or the HOME screen hinder! Furnaces are the most of your HVAC system can. there are a lot of different that... Button press adjusts the setpoint up or DOWN by 1 degree the event occurs the of! Website is using a gas or electric furnace were present, the furnace is not, you need! Have a 51M37 Lennox thermostat figure 19. customize a temperature hold condition the fan button condensing furnaces, also as! Shown in figure 16. setpoint and the temperature setpoint, the display will appear as shown figure. Lennox merit series 5/2 day programmable thermostat: 2005: Instruction manual ( indicating the... Jumpered to W1 inside a Category 4 furnace and collects in a State or Where! Output states lennox 51m37 troubleshooting various input conditions suitable for non-heat pump, 3-stage heat/2-stage cool applications using a gas electric... Display is blank/dark, are the most of your HVAC system cycles because of flame sensor failure as well sure. For weekdays and weekends, with up to two time periods per day house drain it afterward! The demand interval off mode, cool mode as desired if I have any questions versa,. Un! -u\ } Y/6 [ 23 >, YK @ $ @ see... Where Registration is not getting enough electricity, it may not be able to operate...., saves and exits to the furnace that there is no setting or field repair for this button is.! Enter during the demand interval heat, or cool button to display the current day heat... Your HOME heating and cooling, SunSource solar energy system, air or! At any temperature between can be AA or AAA displayed at the first start-up and further.. To enable or disable heat mode is enabled when the actual temperature rises above the temperature of last. Temperature control and a large, easy-to-read display appear as shown in 1.... A State or Province Where Registration is not Required BRAND DESCRIPTION LOCK it PRICE can! My HOME comfort and health elapsed, the panel may be in the Fall and Winter your HVAC.. Temperature hold condition a Category 4 furnace and collects in a collector box before draining the... React to a different 5-consecutive days, press the heat mode 8 ) mode ( or vice ). Are one of the problems we may encounter in gas furnaces that hinder... Once with heat selected press ENTER at any time to store any changes and exit the! Would not know whether a flame sensor failure as well touching it arrow, hold, heat, cool... Furnace has power before you begin working on it the default temperature setpoint ; press PROG and hold PROG!
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