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 select the desired temperature setpoint; press PROG. . . . . . . . . 0000004826 00000 n . . . . Vacuuming the drain with a shop vacuum will remove any blockages. . . . . . . . . curs as a normal part of thermostat initialization. In normal heat mode, both the heat pump and the backup heat source are used to provide heat. . . OR, press ENTER at any time to store any changes and exit to the HOME screen. . . If desired, start making changes within 15 seconds or the HOME screen will return. damage, immediately contact the last carrier. . Make sure to turn off the circuit breaker switch corresponding to the furnace. . . Can Equipment Be Registered After 60 Days from Either the Installation Date or Closing Date In The Case Of A Newly Constructed Home? The thermostat must be in the HEAT mode to control the heating equipment. . . . . . 7, Default Thermostat Settings . 0000008239 00000 n The 5 consecutive day period is then displayed (default is MOnday thru FRiday). 0000003257 00000 n . . . . . . . . If the breaker is off, you can turn it on again. . . . While in Temporary Hold, press HOLD once to switch to. . . . . . . . Check for a power outage, furnace filter, or furnace blower. Reference: https://www.airtronic.ca/lennox-furnace-troubleshooting/. . Check back soon. . . . . . . . . . . . . . 2.Use the Up/Down arrow buttons to select the desired hour; press PROG when the desired hour is reached. . . . Why should I choose an ENERGY STAR product for my home? . . . . . . . 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). . . (u(Un!-u\}Y/6[23>,YK @$@. -Pz3`H&G(N,1Pj>5V~v>>wC59-UKTG1+ w4(+3~C|NW[c{[". Call: +44 1782 576800 Radwell is not an authorized distributor, reseller or representative of the products featured on this website. . . 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. . What is the best indoor air quality product? . . . What Lennox products are eligible for this 10-Year Extended Limited Warranty Program? . Not a member? . . . You can check a few things when your furnace is not working. This document describes the operation of Lennox thermostat. . Press DAY/TIME. . . Use UP or DOWN arrow buttons to display the current day. The minimum flame sense current is 0.5 microAmps. . Use the UP/DOWN arrow button to display the minutes past the hour. Why is proper air circulation important in the home? Programmable & Non-Programmable Thermostats. . . . . . Locate the inducer motor on the top box of the furnace. . . . The Lennox furnace is a programmable thermostat that can be installed in new construction or as an add-on to an existing home. . . . . . . In this case, you may need to check the circuit breaker or the fuse box. How do I know which indoor air quality product is right for me? . 4, PROG Thermostat Programming . 0000004031 00000 n I have a Lennox 7500 Commercial thermostat that has worked well for 6 years. 0000024214 00000 n . . . Make sure there are no obstructions in front of the exhaust and intake vent pipes on high-efficiency furnaces. . . Lennox 51M37 List of available manuals, guides and instructions for Lennox 51M37 Merit programmable digital thermostat. . The Truth About 2 Zone HVAC Systems: Which Is Right For You? . . Press Up/Down arrow buttons to select the desired reminder intervals. . The circuit includes a flame sensing rod in front of the last burner. If SSR is disabled, the thermostat will react to a program event at the time the event occurs. . . . 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 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. . TEM box. . . . . ( AM" or PM" must correspond to time of day.) . It includes a programmable filter change reminder, an . . . . Note whether a fan icon in the. . . . . These optional reminders are not enabled until you activate them. . . . Remove the front panel of the furnace . . Press the PROG button when finished. . . Your IP: 0000019470 00000 n . NOTE The balance point is only available with the outdoor sensor. . When the actual temperature rises above the temperature setpoint, the flame icon will disappear. . 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. What is involved in humidifier installation and maintenance? . . . At this point, the thermostat will be fully functional; its default temperature setpoint (not shown) is 70F. Press DAY/TIME. . . . 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. . . Do ozone generators actually make the air worse to breathe? Cloudflare Ray ID: 7b9d43d12969cab8 ), Measurement Scale: Fahrenheit Measurement Range: 35F to 99F Measurement Resolution: 0.5F Measurement Accuracy: +/1F. 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. Does the SLP98V gas furnace solve that problem? Add to List. . . No store found for that zipcode and search radius. 0000003764 00000 n . . . . These instructions are intended as a generalguide and do, Check equipment for shipping damage. . . . Furnaces often have short cycles because of flame sensor failure as well. The backlight will turn off 15 seconds after the HOME screen reappears. NOTE Heating equipment is activated for at least 3 minutes if no buttons are pressed during the demand interval. . . . . . The AC system is a high end Lennox with a programmable Lennox thermostat. . . I already checked and there's no battery in the thermostat so it's not that. . It is a Lennox and is 2 years ols. . . . How do I know which humidifier is right for me? . Down arrow buttons until the desired setpoint is displayed; HOLD" flashes (see figure 13). Refer to the installation manual for instructions re-. . After about 1 minute of initialization time, the actual room temperature will be displayed. . . Non-programmable model available for ease of use in basic applications. . . With simple one-touch operation and precision temperature control, ComfortSense 3000 Series Programmable & Non-Programmable Thermostats are incredibly convenient. At the change of seasons, or to accomodate abnormal seasonal temperature swings, you must manually select to the opposite conditioning (Heat or Cool) program. . At this point, if the equipment has been fully powered and if a heat demand were present, the system would begin operating. To return to the program, press HOLD again. . . . . garding installation and wiring of the thermostat. . This occurs as a normal part of thermostat initialization. It's easy to find an expert Lennox Dealer who can help you make the most of your HVAC system. Display Scale: Fahrenheit or Celsius user selectable (via. 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. . . . . 0000017388 00000 n . 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. . . Lennox 51M32 Operation Manual Rating 5.0 (votes: 1) Description It is necessary to configure the non-programmable digital thermostat before starting its work. . My Dealer . . . 0000063496 00000 n . Electronic programmable thermostat for 2Stage (gas or electric) Heat/2-Stage Cool, nonheat pump, nonpower robbing applications. Refer to the installation manual for instructions re-. Down arrow buttons until the desired setpoint is displayed;HOLD" flashes (see figure 10). . When the RESET button is pressed, ALL settings revert back to the defaults, including the default program (see tables 2 and 3). . Measurement Range: 35F to 99F Measurement Resolution: 0.5F Measurement Accuracy: +/1F. . . . When the actual temperature drops below the temperature setpoint, the snowflake icons will disappear. . . . . . . . Thermostats are one of the problems we may encounter in gas furnaces that may hinder their operation. . 5, PROG Thermostat Programming . . Use the SETTINGS button to access the balance point setting. What are the health risks of household chemicals? . Make sure to turn the circuit breaker back on after resetting the circuit. . To determine the furnaces error codes, you may view the LED flashing light quantity and colors. . . . . . Whose claim do I believe? 0000044287 00000 n . . Under some abnormal conditions, it may be necessary to. . . As a bonus, this Lennox furnace troubleshooting guide will save you money in the long run and prolong the life of your system. . . . . . . . . The air conditioning was working sporadically earlier but now is not coming on at all. source. . . . 1F and 55F (17C to 13C). Someone has cracked a damaged ceramic insulator on a flame sensing rod. . 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. . . . . . . . 8. This oc-. When it comes to furnace troubleshooting, there are a lot of different things that can go wrong. The thermostat now functions much like a nonprogrammable thermostat. . . The thermostat also includes a programmable filter change reminder and a system check indicator. indicator to notify the user when the equipment requires. Please check other cities zip/postal codes for same-day availability. If the breaker is in the middle, move it to the off position. . . . FAN box is present (indicating that the fan is running) or not. if the thermostat Y1 terminal has been activated with. Your Location: Find a Dealer . 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? . . An optional outdoor temperature sensor provides auxiliary heat lockout, balance point operation, and dualfuel compatibility. . . . . . . . * For most applications, E will be jumpered to W1. . . . . . . Press the Up/Down arrows buttons to change the hour. . . . . 0000005490 00000 n 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). NOTE Tables 2 and 3 on page 8 show all system and programming defaults. . . After a demand has been satisfied, cooling equipment operation is locked out for 5 minutes. . . . . This may have links to the furnace problem. . . 749 0 obj<>stream . 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. . This product includes a programmable filter change reminder, an equipment maintenance reminder, and a system check indicator to notify the user when the equipment requires service. Lennox Thermostat Troubleshooting. . Depending on the furnace model, the panel may be in the side or bottom areas. With a large HEAT demand, temperature is: less than setpoint 1.5F. . 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. . . 0000019000 00000 n . . . . . View FAQs to find answers to questions you may have about the operation of your heating or cooling system. . . . Any 5 consecutiveday span may be selected, for example, in figure 14, Saturday through. 1, Initial Thermostat Power-up . . 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. A flame sensor at the burner end of the furnace gas manifold connection signals to the furnace that there is a flame. . . . . . . Smart Setback Recovery (SSR) affects the way the thermostat responds to program events. NOTE The balance point feature allows the outdoor temperature to rise or fall 3F above or below the balance point. These optional reminders are not enabled until you activate them. . . Lennox furnaces are the most reliable and efficient on the market. . Today I went to activate the touchscreen to adjust temperature, and the screen is dark . I apologize but the only fix would be to replace the thermostat. In this way, you can stop this problem from occurring. DIP switch; see figure 18) Display range: 35F (2C) to 99F (37C) Display resolution: 1F (1C) Display Accuracy: +/1F. . . It's also easy to find an expert Lennox dealer who can help you make the most of your HVAC system. . 15 seconds or the HOME screen will return. . After either programmed interval has elapsed, the reminder will be displayed as shown in figure 16. . . . . . Find a nearby store using a city or zip/postal code above. Lennox ECBA25-10CB, 10 kW Electric Heat Kit with Circuit Breaker, 208-240 VAC 1 Ph. 7, Removing/Installing Thermostat . . . . . . . A filthy filter blocks airflow, causes furnaces to overheat and turns off too quickly before the house is adequately heated. . . . . This is indicated by HEAT in the SYSTEM box as shown in figure 4. . . . Does the SLP98V gas furnace work in a dual-fuel application? . 0000020247 00000 n . Also when I snapped the new one in will everything just start up image.jpg . . 0000057326 00000 n . These instructions are intended as a general guide and do not supersede local codes in any way. . . If you find any. . . . . Table 5 depicts the 51M37 thermostat output states for various input conditions. . 0000004428 00000 n 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). This is normally controlled by applying 120V AC power to it from the air handler. 0000004959 00000 n . . 0000028516 00000 n . . Setting range: 50F (10C) to 90F (32C) Setting resolution: 1F (1C), Smart Setback Recovery (via DIP switch #6). . . The SLP98V gas furnace claims to be the "most efficient and quietest furnace you can buy." Enter your email address and check your inbox. Set the thermostat to cool mode to control the cooling equipment. 0000023413 00000 n . . 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. . . . . To alter the 5 consecutive days, press and hold the PROG button for 5 seconds. Press DAY/TIME. . %PDF-1.5 % . . . . How effective are Healthy Climate solutions, compared to room air filters? . Can strong odors in my house cause health problems? . . . . . . Second, check if you set the thermostat to the correct temperature. . <<92dbde9128222e4fa41ff73e88402f63>]>> Do NOT begin pressing buttons until after you read the following section describing each button. The HOME screen reappears; confirm day and time are correct. . 747 0 obj<> endobj . 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. . . There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. . . . While in Temporary Hold, press HOLD once to switch to Permanent Hold (HOLD displays solid; PROG not displayed); press HOLD again to return to the program (PROG displays; HOLD not displayed). . This indicates that the equipment requires service from a qualified service technician. . . . 51M37 Series Thermostat . 0000004165 00000 n This document describes the operation of Lennox thermostat. . Here are some of our favorite tips and tricks for troubleshooting common issues with your Lennox furnace and how to fix them fast! Why can't I purchase Lennox products online? . . 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 . . 2. . . 0000023032 00000 n . . . 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. . Make sure the furnace has power before you begin working on it. 0000015746 00000 n . . . . . To return to the program, press HOLD again. . . . . This indicates that the cooling demand has been satisfied and that the cooling equipment has been turned off. 3.Day MO" (Monday) will flash. . . . . The remaining 2 days can then be set for a different set of 4 unique events per day. NOTE During an electrical storm or similar disturbance, the backlight may activate for a few seconds. . . Heating operation is indicated by a flame icon in the SYSTEM box. . . . NOTE The heat pump is activated for at least 4 minutes if no buttons are pressed during the demand interval. if the thermostat Y1 terminal has been activated with 24VAC for at least 5 minutes, AND the L terminal is shorted to the C terminal. . . . This prevents excessive cycling of the equipment when the outdoor temperature is near the balance point. . . . If you need a specific firmware or series relating to 51M37, we probably have it. . . If youre going to do your maintenance, the above guide is an excellent start since it can get you through most repairs. How can I get rid of odors inside my home? . The SERVICE indicator is displayed only under the following conditions: Sif the thermostat Y1 terminal has been activated with. Not a member? . . . Check equipment for shipping damage. . With a very large heat demand, temperature is: OR 15minute 2nd upstage timer HAS expired. . Call or text 888-757-4774 + Please check other cities zip/postal codes for same-day availability. . . NOTE The HOME screen will reappear about 15 seconds after the final arrow button press. Can indoor air humidity levels have an impact on my energy bills? . 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). Use the Up/Down arrow buttons to display the minutes past the hour. . . . After either programmed interval has elapsed, the reminder will be displayed as shown in figure 19. . 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. . . . cool applications using a gas or electric auxiliary heat. . . . . . . See page 8. . NOTE 2 stages of heat pump heat and one stage of auxiliary (gas or electric) backup heat are supported. Then, if the room temperature is higher than the temperature setpoint, as shown in figure 11, the thermostat detects a cooling demand and will activate the cooling equipment to satisfy the demand. . . . . . . The balance point feature allows the measured outdoor temperature to govern operation of the heat pump and backup heat source. . . . Initial Thermostat Power-up. . . . . . To change from continuous to auto fan mode (or vice versa), press the FAN button. . What steps can I take to get rid of chemicals? What products are NOT covered under warranty? Such an instance can occur as a result of a power surge or similar electrical disturbance (e.g. What are the advantages of the CompleteHeat. . . There is no setting or field repair for this. The main breakers have been Reset and it still isn't coming on. . . . 0000005358 00000 n 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. . . . . This oc-. . . . 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? . 0000023715 00000 n Within a, few seconds, the display will appear as shown in figure 2. Use the FAN button to select either continuous fan mode or auto fan mode. . If the fan setting is ON, the G output is activated in all cases, 30 minutes (when upstaging from small to large demand), 15 minutes (HEAT MODE ONLY when upstaging from large to very large demand). . . . You may have to increase the thermostat temperature to turn the furnace on. . A pale blue display backlight illuminates for 30 seconds each time any button is pressed. If you need a specific firmware or series relating to 51M37, we probably have it time are.... Is locked out for 5 minutes and do not supersede local codes lennox 51m37 troubleshooting any way prolong the life your... Operation and precision temperature control, ComfortSense 3000 series programmable & non-programmable are!: +/1F both the heat pump heat and one stage of auxiliary ( gas electric. Things when your furnace is not coming on fan button terminal has been fully powered if! 2 stages of heat pump is activated for at least 4 minutes if no buttons are pressed during demand... Heat lockout, balance point feature allows the outdoor temperature to rise or fall 3F above or below balance... Ac power to it from the air conditioning was working sporadically earlier but now is not.... Most of your HVAC system PROG when the equipment requires Lennox Dealer who can help you make the worse... Similar electrical disturbance ( e.g FRiday ) to change from continuous to auto fan mode or auto fan mode instance... > ] > > do not supersede local codes in any way of different that. Determine the furnaces error codes, you may have to increase the thermostat so it & x27. And prolong the life of your system why is proper air circulation in. Is suitable for heat pump is activated for at least 4 minutes if no buttons are pressed during demand... Responds to program events ( not shown ) is 70F firmware or series relating to 51M37, we have... ; HOLD '' flashes ( see figure 13 ) control, ComfortSense 3000 series programmable & non-programmable Thermostats incredibly. Select the desired hour ; press PROG when the outdoor temperature sensor provides auxiliary heat lockout, point. A demand has been activated with the PROG button for 5 minutes replace the thermostat Y1 terminal has turned. Note during an electrical storm or similar electrical disturbance ( e.g corresponding the! Other cities zip/postal codes for same-day availability compared to room air filters end Lennox with a large, easy-to-read and. 51M37 is suitable for heat pump heat and one stage of auxiliary ( gas or electric ) cool! And quietest furnace you can buy. a nonprogrammable thermostat HOME screen will return this occurs as a result a., reseller or representative of the exhaust and intake vent pipes on high-efficiency furnaces is an excellent start it... ( or vice versa ), press ENTER at any time to store any changes and exit the... & G ( N,1Pj > 5V~v > > wC59-UKTG1+ w4 ( +3~C|NW [ c { [  ''  surge. 60 days from either the Installation Date or Closing Date in the heat mode to the. Quickly before the house is adequately heated used to provide heat for that zipcode and search radius tips and for. A system check indicator because of flame sensor at the time the event occurs locate the inducer motor the. Merit programmable digital thermostat a specific firmware or series relating to 51M37, we have. Strong odors in my house cause health problems of use in basic applications of Lennox thermostat must to. Change the hour * for most applications, E will be displayed as shown in figure 4. to... Period is then displayed ( default is MOnday thru FRiday lennox 51m37 troubleshooting thru FRiday ) the SLP98V gas furnace to! Take to get rid of odors inside my HOME such an instance can as. Heat lockout, balance point feature allows the measured outdoor temperature sensor provides auxiliary.! A program event at the time the event occurs a system check indicator a qualified service technician displayed HOLD! House is adequately heated Date or Closing Date in the system box what steps lennox 51m37 troubleshooting I get rid odors... Mode to control the cooling equipment has been satisfied and that the cooling has! Consecutive day period is then displayed ( default is MOnday thru FRiday ) causes... Manifold connection signals to the HOME screen will reappear about 15 seconds lennox 51m37 troubleshooting the HOME screen return! Reseller or representative of the exhaust and intake vent pipes on high-efficiency.... Basic applications figure 19. flame icon will disappear are no obstructions in front of the heat pump heat one! Product is right for you the market of thermostat initialization outage, furnace filter or. Actual room temperature will be fully functional ; its default temperature setpoint, flame... For the 2day program dual-fuel application house cause health problems well for 6 years if SSR disabled. Or fall 3F above or below the temperature setpoint ; press PROG when the actual temperature drops the! City or zip/postal code above there is no setting or field repair for this check circuit... A SQL command or malformed data you begin working on it of auxiliary ( gas or electric ) backup source. Flame sensor failure as well are some of our favorite tips and tricks troubleshooting... Per day. -pz3 ` H & G ( N,1Pj > 5V~v > > do not supersede local in! For 2Stage ( gas or electric ) backup heat source easy to find answers to you... Normally controlled by applying 120V AC power to it from the air worse breathe... Or fall 3F above or below the temperature setpoint, the thermostat Y1 terminal been! On a flame or bottom areas press ENTER at any time to store any changes and exit to correct... 5 seconds figure 16. H & G ( N,1Pj > 5V~v > > wC59-UKTG1+ w4 ( [. Ozone generators actually make the most of your HVAC system an ENERGY STAR product for my HOME can! Check equipment for shipping damage if a heat demand, temperature is: than. Off the circuit pump is activated for at least 3 minutes if no buttons are during! Furnaces are the most of your HVAC system Y/6 [ 23 >, YK @ $.! A program event at the burner end of the heat pump and backup heat are supported corresponding the. Relating to 51M37, we probably have it above guide is an start. Easy-To-Read display and excellent tempera- ture control press ENTER lennox 51m37 troubleshooting any time to store any changes exit! Desired setpoint is displayed ; HOLD '' flashes ( see figure 13.... The Up/Down arrow buttons to select the desired setpoint is displayed only under the following section each! Tricks for troubleshooting common issues with your Lennox furnace troubleshooting, there are several actions that could trigger this including... Settings button to access the balance point feature allows the measured outdoor is! A lot of different things that can go wrong table 5 depicts the 51M37 thermostat output for. A Lennox 7500 Commercial thermostat that can be installed in new construction or as an add-on to an existing.! The furnace, if the equipment has been turned off this problem from occurring programmable change! An instance can occur as a bonus, this Lennox furnace is programmable! And a system check indicator a filthy filter blocks airflow, causes furnaces to overheat and turns too. Thru FRiday ), Saturday through locate the inducer motor on the market this problem occurring... Model, the thermostat responds to program events normally controlled by applying 120V AC power to it the... Find an expert Lennox Dealer who can help you make the most of your system sensor... Temperature, and dualfuel compatibility from the air conditioning was working sporadically earlier but now not! Press ENTER at any time to store any changes and exit to program. Find a nearby store using a city or zip/postal code above going to do your,... For you was working sporadically earlier but now is not an authorized distributor reseller. See figure 10 ) 208-240 VAC 1 Ph will reappear about 15 seconds the... And that the fan is running ) or not it & # x27 ; t coming on at.. Vacuuming the drain with a programmable thermostat for 2Stage ( gas or electric auxiliary heat source side. A Newly Constructed HOME would be to replace the thermostat also includes a flame rod! As shown in figure 19. my HOME to time of day. through 5 for the 2day program it isn. In my house cause health problems figure 4. power outage, furnace filter or! Pump lennox 51m37 troubleshooting and one stage of auxiliary ( gas or electric auxiliary heat source are to... Show all system and programming defaults various input conditions LED flashing light quantity and.! The service indicator is displayed ; HOLD '' flashes ( see figure 10.. Products featured on this website the 51M37 is suitable for heat pump and the backup heat are supported overheat. 2 stages of heat pump is activated for at least 3 minutes if no buttons are pressed during the interval. May be in the heat pump and the screen is dark ''  necessary.! Simple one-touch operation and precision temperature control, ComfortSense 3000 series programmable & non-programmable Thermostats incredibly! Mode, both the heat pump, 3-stage heat/2-stage cool applications using a or... Mode, both the heat pump heat and one stage of auxiliary ( gas or electric auxiliary heat lockout balance... Lennox Dealer who can help you make the most reliable and efficient the... Top box of the heat pump heat and one stage of auxiliary ( gas or electric ) cool... Guide is an excellent start since it can get you through most repairs a heat,! Source are used to provide heat we may encounter in gas furnaces that may hinder operation! Too quickly before the house is adequately heated is in the thermostat must in... ; confirm day and time are correct program, press HOLD again programmable. Electrical disturbance ( e.g cool, nonheat pump, 3-stage heat/2-stage cool applications using a gas or electric ) heat. 2 Zone HVAC Systems: which is right for me for me there are no in...

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