Turn off the furnace power and repair a short or replace the pressure switch. 4. Read three LED flashes to mean your furnace has an open pressure switch circuit or it has an induced draft blower operating. Check the pressure switch hose of your furnace for blocks or an improper connection.Dec 19, 2022 · Goodman furnace isn’t blowing hot air. First, check your thermostat if your Goodman furnace isn’t blowing hot air. It should be set to “auto” and “heat.”. If it’s set to “on,” your fan will blow air constantly, even when it’s not actively heating. Next, check your air filter. You should change your furnace air filter regularly. goodman furnace tech support. Its a 2018 model goodman and i get 3 led flashes, the igniter glows real bright and then dims. We tried to jump the pressure switch but the furnace did the same thing it … read moreThe Goodman furnace error code 1dl is a common error code associated with Goodman furnaces that indicates a problem with the hot surface ignitor. When this error code appears, it usually indicates that the hot surface ignitor has failed and needs to be replaced. This article will provide an overview of this error code and discuss how to ...View and Download Goodman AVPTC42D14 series installation & operating instructions manual online. AVPTC**14 series. AVPTC42D14 series air handlers pdf manual download. Also for: Avptc48d14 series, Avptc30c14 series, Avptc36c14 series, Avptc24b14 series, Avptc48c14 series, Avptc60d14... Having a trane furnace with the code 1DL can be an indication of a problem. Understanding this code and addressing the underlying problem is key to ensuring that your furnace operates as intended. This article will discuss the trane furnace code 1DL, its potential causes, and how you can address them. — The Trane furnace code 1DL is a ... CODE: b9. RESULT: Indoor blower motor problem./Blocked filters./Restrictive/ undersized ductwork./Indoor-outdoor unit miss match. CODE: d0. RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module does not contain any shared data. CODE: d1.STATUS: Discharge Air Too Hot. SUGGESTED ACTION: Clean Filter or Remove Air Blockage. CODE: LC. STATUS: Outdoor Coil Thermistor temperature high. SUGGESTED ACTION: Clean Condenser Coils, Check Fan for fault. Code will reset after cleaning. CODE: C2. STATUS: Indoor Air Recirculation. Large delta between thermostat and return.How to Replace Your Air Filter. Open the access door on your Goodman furnace by pulling it towards you, revealing the filter inside. Carefully remove the filter by hand. Vacuum any dust or debris that may have accumulated on the filter housing of the furnace. Slide in the replacement filter. Once again Twin Tech came through and fixed my furnace. A young man by the name of Mitch came by tonight and he was so nice explained everything he was quick he was clean he turned off the lights even when he left the furnace room it s just above and beyond Twin Tech always delivers and I just found out about them last year and I will use no one else but thanks again Mitch you are fantasticTo check for these signs of a dirty or defective furnace sensor, follow these steps: Switch off the furnace. Close the gas supply valve. Open the furnace and locate the flame sensor. Assess the flame sensor for soot and corroding or cracked/damaged sensor porcelain insulation.1dl code has appeared on our Goodman ac, Yes to both. Since last night, reset everything, ... I hav e GMV95 Goodman Furnace and air about 6 months old. Air has worked ...Welcome to TWINTECH Heating & Cooling Keeping families comfortable for over 30 years. Check out our seasonal promotions. TWINTECH is a full-service HVAC care and maintenance provider located in Durham, Ontario. Apr 12, 2023 · No signal from the thermostat. Turn off the unit’s power and check connections. Single LIGHT flash. Furnace lockout due to an excessive number of ignition retries. Locate and correct gas interruption. Reset by lowering it for 20 seconds and then raise it back, furnace will reset itself after one hour. 2 LIGHT flashes. Jul 13, 2022 · Goodman furnaces are among the most recognized and respected forced-air heating systems. Its reputation was built on a foundation of quality core product development, manufacturing excellence, and engineering expertise. Keeping that reputation alive means continuous improvement through product innovation and the introduction of new features reflecting advances in technology. Many components ... 67. Ambient Temperature Sensor Fault (Out of Range – Open or Shorted) ERR 67. 6 Flash. Coil Temperature Sensor Fault (Out of Range – Open or Shorted) Low Pressure Cut Out Fault (Open outside of defrost Cycle-Hard lock out, cycle power to reset) ERR 79.Purchase Your HVAC Equipment Direct | Goodman AC And Furnace ... Display Codes D3 – Airflow CFM Mismatch Diagnostic Description Indoor air movers (air handlers / furnaces) cannot supply the airflow required for proper system operation. Possible Cause Misplaced indoor air mower-replacement with incorrectly sized air handler / furnace.Hi just hooked up my Goodman furnace and as soon as I put the power on the 3:00 a.m. fuse blue. AnyHi just hooked up my Goodman furnace and as soon as I put the power on the 3:amp. fuse blew. Any sugg … read moreDec 23, 2022 · Goodman manufacturing. it is displaying code 1dl and the green light is flashing two long, five short. anything I can - Answered by a verified HVAC Technician CODE: b9. RESULT: Indoor blower motor problem./Blocked filters./Restrictive/ undersized ductwork./Indoor-outdoor unit miss match. CODE: d0. RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module does not contain any shared data. CODE: d1.To check for these signs of a dirty or defective furnace sensor, follow these steps: Switch off the furnace. Close the gas supply valve. Open the furnace and locate the flame sensor. Assess the flame sensor for soot and corroding or cracked/damaged sensor porcelain insulation.HVAC Technician: RobHVAC. No problem. Or you can just touch the two terminal screws together with the wire until the unit turns on. Ask Your Own HVAC Question. FO4 IRC it turned on. HVAC Technician: RobHVAC. OK so that means that the issue is the thermostat not the unit.Open the gas valve fully in a counterclockwise motion to make sure the gas supply is turned on. Increase the temperature on the thermostat, and turn the mode to "Heat" after making sure the vents are all clear of blockages. Disconnect the power to reset the furnace, and contact Trane if necessary.Goodman furnaces are among the most recognized and respected forced-air heating systems. Its reputation was built on a foundation of quality core product development, manufacturing excellence, and engineering expertise. Keeping that reputation alive means continuous improvement through product innovation and the introduction of new features reflecting advances in technology. Many components ...Apr 12, 2023 · No signal from the thermostat. Turn off the unit’s power and check connections. Single LIGHT flash. Furnace lockout due to an excessive number of ignition retries. Locate and correct gas interruption. Reset by lowering it for 20 seconds and then raise it back, furnace will reset itself after one hour. 2 LIGHT flashes. https://www.alwaysopen.caGoodman Furnace Fault CodesGoodman furnace isn’t blowing hot air. First, check your thermostat if your Goodman furnace isn’t blowing hot air. It should be set to “auto” and “heat.”. If it’s set to “on,” your fan will blow air constantly, even when it’s not actively heating. Next, check your air filter. You should change your furnace air filter regularly.Troubleshooting GMEC96 Fault Status Codes •Fault Code Example 1: Status light displays “4 Red flashes.” •Refer to the “troubleshooting” chart on page 44 of the GMEC96 service manual. •Also, find your “fault symptoms and description” in the troubleshooting chart on pages 42-43.View the user manual below for more details. Want a copy for yourself? Download or print a free copy of the user manual below. GAS FURNACE (INSTALLOPERATING) (viewing) Download PDF. Owner’s Manual. Top Parts. Models. Showing 10 of 12 parts. Show.The flashing LEDs on your furnace will correspond to a specific fault code that is shown here on their diagnostic chart.Goodman is one of the biggest names i...Purchase Your HVAC Equipment Direct | Goodman AC And Furnace ...The controller will indicate a fault condition by flashing the fault LED. The flashing pattern will be ¼ second on and ¼ second off for each count, if multiple faults are present it will dwell 2 seconds between each fault code, then dwell 5 seconds and repeat until the fault(s) are cleared. Listed below are the fault codes. 1 flash – Not Used Feb 10, 2023 · 67. Ambient Temperature Sensor Fault (Out of Range – Open or Shorted) ERR 67. 6 Flash. Coil Temperature Sensor Fault (Out of Range – Open or Shorted) Low Pressure Cut Out Fault (Open outside of defrost Cycle-Hard lock out, cycle power to reset) ERR 79. Purchase Your HVAC Equipment Direct | Goodman AC And Furnace ...May 11, 2019 · STATUS: Discharge Air Too Hot. SUGGESTED ACTION: Clean Filter or Remove Air Blockage. CODE: LC. STATUS: Outdoor Coil Thermistor temperature high. SUGGESTED ACTION: Clean Condenser Coils, Check Fan for fault. Code will reset after cleaning. CODE: C2. STATUS: Indoor Air Recirculation. Large delta between thermostat and return. Jan 4, 2023 · Get professional furnace and air conditioning installation, maintenance, and 24-hour repair services with SNAP Heating & Air Conditioning. Our licensed and experienced technicians are available around the clock to provide prompt and reliable service to keep your home comfortable all year long. Jul 1, 2022 · Brand new and it is a goodman ace furnace dont have the model number with me. Tried the reset - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. Jan 12, 2023 · Get professional furnace and air conditioning installation, maintenance, and 24-hour repair services with SNAP Heating & Air Conditioning. Our licensed and experienced technicians are available around the clock to provide prompt and reliable service to keep your home comfortable all year long. CODE: b9. RESULT: Indoor blower motor problem./Blocked filters./Restrictive/ undersized ductwork./Indoor-outdoor unit miss match. CODE: d0. RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module does not contain any shared data. CODE: d1.Trane furnace code 1dl. Troubleshooting a Trane furnace with code 1DL is a common challenge homeowners face. Code 1DL stands for “Inadequate Diffuser Pressure Switch Closure” and can occur due to problems with the furnace blower motor, evaporation motor, heat exchanger or other related components.ERROR LIGHT = Y. SUGGESTED ACTION = Clean Condenser Coils, Check Fan for fault. Code will reset afier cleaning. CODE = C5. AIRF LOW ALERT. STATUS = Outdoor Coil temperature too high for outdoor ambient temperature. DISPLAY = N. ERROR LIGHT = Y. SUGGESTED ACTION = Check for Blocked Outdoor Air or Clean Coil.My goodman furnace's diagnostic display reads 88. I was away for work and my girlfriend said it was reading e5 so I got her to cut power and change 3 amp fuse. Now it says 88 and im stumped. Furnace d … read moreJan 18, 2014 · GMVC95 goodman furnace issue I had a brand new GMVC951155DXA installed in my house, along with a Comfortnet CTK03 thermostat, and brand new DSZC16 heat pump. Immediately after starting the system, I had a prompt on the thermostat that says E2 PS1 (Low pressure switch stuck open). Goodman furnaces are among the most recognized and respected forced-air heating systems. Its reputation was built on a foundation of quality core product development, manufacturing excellence, and engineering expertise. Keeping that reputation alive means continuous improvement through product innovation and the introduction of new features reflecting advances in technology. Many components ...Aug 16, 2023 · Possible Causes for 4 flashes on a Goodman furnace. • Check filters andductwork for blockage.Clean filters or removeobstruction. circulator blower speed, orfailed circulator blower. • Check circulator blowerspeed and performance.Correct speed or replaceblower if necessary. • Misaligned burners, blockedflue and/or air inlet pipe, orfailed ... Done That · #12 · Jul 25, 2016. You have a 2-stage furnace and a 2-stage AC only outdoor unit. So the only terminals that need to be wired for correct operation are R,C,G,W1,W2,Y1,Y2. If you posted pics of the wiring at the thermostat, furnace board, and outdoor board we could probably straighten this out.Feb 25, 2023 · Goodman error code 7P1 is IDL Troubleshooting GMEC96 Fault Status Codes •Fault Code Example 1: Status light displays “4 Red flashes.” •Refer to the “troubleshooting” chart on page 44 of the GMEC96 service manual. •Also, find your “fault symptoms and description” in the troubleshooting chart on pages 42-43.CODE: b9. RESULT: Indoor blower motor problem./Blocked filters./Restrictive/ undersized ductwork./Indoor-outdoor unit miss match. CODE: d0. RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module does not contain any shared data. CODE: d1.code (if there is no fault or protection code it will be display “nn”) Normal display Display “--” Operating mode 3—Heating; 4—Forced cooling） Operating fan speed grade (0—Power off) The total capacity requirements of the interior unit The capacity requirements of the revised external unit T3 piping temperature T4 environmert ...specified on the furnace rating plate and OPERATIONAL CHECKS section of these instructions. When furnace duct(s) supply air outside the space contain-ing the furnace, a return air duct must terminate in the same space as the supply duct and be sealed to the furnace casing. A gas-fired furnace for installation in a residential garageJan 25, 2020 · 1. the thermostat demand signal is intermittent. 2. Time delay relay or control board faulty. 3. If high pressure switch is present, go to Flash Code 2 information. 4. If a low pressure switch is present, go to Flash Code 1 information. Status LED: Yellow “ALERT” Flash Code 4. Status LED Description: off rotor. This one covers the IFC error codes for most Trane furnaces. This video is part of the heating and cooling series of training videos made to accompany my we...Select the brand from the drop down menu. 2. Next select the model number from Model drop down box. 3. Move through the remaining menus. 4. Once all menus have been satisfied push the SUBMIT button. 5. To reset the search for a new search click the SEARCH button.Turn off the furnace power and repair a short or replace the pressure switch. 4. Read three LED flashes to mean your furnace has an open pressure switch circuit or it has an induced draft blower operating. Check the pressure switch hose of your furnace for blocks or an improper connection.I need your assistance with the Amana and Goodman furnace E5 error code.After the LED segment 2 shows you E and the segment one shows the 5, this is one of t...ERROR LIGHT = Y. SUGGESTED ACTION = Clean Condenser Coils, Check Fan for fault. Code will reset afier cleaning. CODE = C5. AIRF LOW ALERT. STATUS = Outdoor Coil temperature too high for outdoor ambient temperature. DISPLAY = N. ERROR LIGHT = Y. SUGGESTED ACTION = Check for Blocked Outdoor Air or Clean Coil.FIX: Check your Goodman furnace for a pinched or blocked pressure switch hose. CODE: Continuous LED flashes PROBLEM: This means that your furnace has a reversed polarity of 115 volts. FIX: You will have to correct the wiring polarity after reviewing the wiring diagram. goodman furnace codesLast Udated: August 23, 2023. The Goodman 1DL error code is a common problem in Goodman furnaces. It indicates a problem with the low-voltage transformer, which provides power to the furnace’s control board and other components.October 28, 2021 Goodman furnaces have a display panel with a built-in trouble-code that uses LED lights to show the homeowner that there is a malfunction of some sort. What do these error codes mean and is there anything that you can do to fix these problems? Here is everything that you need to know. Goodman Furnace Error CodesGOODMAN GAS FURNACE IO MANUAL GMS8 GDS8 GHS8 [PDF] (2005) Gas-Fired Warm Air Furnace, Single Stage, Category 1, Goodman Manufacturing Co., L.P. GOODMAN MES9 & CES9 FURNACE INSTALLATION INSTRUCTIONS [PDF] (2019) GOODMAN FURNACE HIGH TEMPERATURE PLASTIC VENT HTPV SAFETY RECALL [Web article] US CPSC noticeFeb 10, 2023 · Besides Goodman fault codes, there are the messages which can also appear, status and data related to these codes. This information can give you the idea about any necessary further actions – for example, 3 flashes mean that Goodman pressure switch stuck open, and 2 flashes mean the same part stuck closed. CODE: 2 Flashes. RESULT: The furnace is likely blowing cold air because it's dropping the flame. CODE: 3 Flashes. RESULT: Indicates a problem with the pressure switch. CODE: 4 Flashes. RESULT: Indicates a problem with the limit switch. CODE: 6 Flashes. RESULT: Indicates a problem with the polarity or grounding.A 1dl code on the Goodman furnace uses a digital thermostat to regulate and control the furnace, saving time and energy. A digital thermostat is an electronic device that regulates the heating of buildings or spaces to regulate the conditions inside.Some simple Diy troubleshooting a Goodman furnace with no flame and the computer board putting out a number 1 flash code.Amazon link to Great products that e...Most popular furnace brands in Canada There are several popular furnace brands available in Canada, and the most popular ones are: Lennox Carrier Trane Bryant York Goodman Rheem American Standard Armstrong Air Napoleon These brands offer a range of furnace... 1dl code has appeared on our Goodman ac, Yes to both. Since last night, reset everything, ... I hav e GMV95 Goodman Furnace and air about 6 months old. Air has worked ...My brand new 2 ton Goodman is tripping the cb when outside 8/7/2023. I have an issue with my Goodman air conditioner, I do not 8/6/2023. I have a Goodman central air unit washed the condenser clean 8/6/2023. Ok. Opening a new thread I have got a Goodman heat pump unit 8/3/2023. I'm working on a Goodman 5 ton and the high pressure lines 8/1/2023.ERROR LIGHT = Y. SUGGESTED ACTION = Clean Condenser Coils, Check Fan for fault. Code will reset afier cleaning. CODE = C5. AIRF LOW ALERT. STATUS = Outdoor Coil temperature too high for outdoor ambient temperature. DISPLAY = N. ERROR LIGHT = Y. SUGGESTED ACTION = Check for Blocked Outdoor Air or Clean Coil. View the user manual below for more details. Want a copy for yourself? Download or print a free copy of the user manual below. GAS FURNACE (INSTALLOPERATING) (viewing) Download PDF. Owner’s Manual. Top Parts. Models. Showing 10 of 12 parts. Show.Nov 29, 2014 · A quick look at goodman trouble codes on a goodman furnace. Some simple hints on what those codes can indicate what the problem could be. Amazon link to Gre... Select the brand from the drop down menu. 2. Next select the model number from Model drop down box. 3. Move through the remaining menus. 4. Once all menus have been satisfied push the SUBMIT button. 5. To reset the search for a new search click the SEARCH button. The rollout switches detect heat where it shouldn’t be. Faulty switches are indicated by nine flashes on the Goodman furnace LED. You can try replacing your furnace filter or contact technicians if it does not work. Call Immediate Services To Fix Your Furnace Issues Today. You may be able to fix most of your furnace issues by following the ...The duration of warranty coverage in Texas and Florida differs in some cases. ** For installation in California’s South Coast Air Quality Management District (SCAQMD) only: This furnace does not meet the SCAQMD Rule 1111 14 ng/J NOx emission limit, and thus is subject to a mitigation fee of up to $450. This furnace is not eligible for the ...- In short: check your fuse on the circuit board. If it's tripped, replace it. I got this 5 amp fuse on Amazon: https://amzn.to/3O5JUko and here's the Nest t...About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...4th of July Deals - Purchase Your HVAC Equipment Direct ...Sep 29, 2022 · If the furnace is running, turn the thermostat off and allow the furnace to cool and the blower to stop operating. Initiate a call for heat from the thermostat and monitor the ignition sequence. 1. The inducer motor should start with no difficulty. 2. The pressure switch should close within a couple seconds of the inducer starting. 3. Nov 30, 2019 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ... Remove the access panel on your Trane furnace. Locate the dirty air filter. It should be near the return air duct or the blower chamber’s entrance. Remove the old air filter and slide in a new one. Ensure that signifiers indicate that the new filter is installed correctly. Replace the panel or door to your Trane furnace.Aug 16, 2023 · Possible Causes for 4 flashes on a Goodman furnace. • Check filters andductwork for blockage.Clean filters or removeobstruction. circulator blower speed, orfailed circulator blower. • Check circulator blowerspeed and performance.Correct speed or replaceblower if necessary. • Misaligned burners, blockedflue and/or air inlet pipe, orfailed ... goodman furnace codes The flashing LEDs on your furnace will correspond to a specific fault code that is shown here on their diagnostic chart. Goodman is one of the biggest names in home heating and energy efficient home comfort. Troubleshooting b1 fault code on a Goodman communicating air handler HVAC Technician: airheatman , HVAC Technician replied 7 years ago Take a look at this manual on troubleshooting these motors and let me know if you want to get the tester and determine if issue is in motor or boardSelect the brand from the drop down menu. 2. Next select the model number from Model drop down box. 3. Move through the remaining menus. 4. Once all menus have been satisfied push the SUBMIT button. 5. To reset the search for a new search click the SEARCH button.Jul 1, 2022 · Brand new and it is a goodman ace furnace dont have the model number with me. Tried the reset - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. To receive the Lifetime Compressor Limited Warranty (good for as long as you own your home), Lifetime Heat Exchanger Limited Warranty (good for as long as you own your home), 10-Year or 2-Year Unit Replacement Limited Warranty, 20-Year Heat Exchanger Limited Warranty, and 10-Year Parts Limited Warranty, online registration must be completed ...Goodman manufacturing. it is displaying code 1dl and the green light is flashing two long, five short. anything I can - Answered by a verified HVAC TechnicianFeb 4, 2017 · Hi just hooked up my Goodman furnace and as soon as I put the power on the 3:00 a.m. fuse blue. AnyHi just hooked up my Goodman furnace and as soon as I put the power on the 3:amp. fuse blew. Any sugg … read more
This one covers the IFC error codes for most Trane furnaces. This video is part of the heating and cooling series of training videos made to accompany my we.... Sam pack
4th of July Deals - Purchase Your HVAC Equipment Direct ... Jul 27, 2022 · I have problem with bryant furnace mod#379CAV036070AGJA just to call for heat the board display code #12 (HK42FZ011) so we wait some time and after that the board run a perfect cycle,run inducer,fire … Select the brand from the drop down menu. 2. Next select the model number from Model drop down box. 3. Move through the remaining menus. 4. Once all menus have been satisfied push the SUBMIT button. 5. To reset the search for a new search click the SEARCH button.Mar 23, 2017 · Troubleshooting GMEC96 Fault Status Codes •Fault Code Example 1: Status light displays “4 Red flashes.” •Refer to the “troubleshooting” chart on page 44 of the GMEC96 service manual. •Also, find your “fault symptoms and description” in the troubleshooting chart on pages 42-43. Code 1-3: Indicates that a limit flame switch problem that normally auto-resets after 3 hours. Code 1-4: Represents an ignition problem. However, the furnace will auto-reset after some hours. Code 2-1: This is a sign of gas heating lockout. You need to check if the gas valve wiring is correct.FIX: Check your Goodman furnace for a pinched or blocked pressure switch hose. CODE: Continuous LED flashes PROBLEM: This means that your furnace has a reversed polarity of 115 volts. FIX: You will have to correct the wiring polarity after reviewing the wiring diagram. goodman furnace codes Goodman HVAC unit’s require registration with them to track the warranties. Registration is also required to get the extra additional warranty benefits. Warranty Registration. Most HVAC manufacturers including Goodman, require homeowner to register their Air Conditioner, Furnace and/or Heat Pump in order to get the extra years of their warranty.FIX: Check your Goodman furnace for a pinched or blocked pressure switch hose. CODE: Continuous LED flashes PROBLEM: This means that your furnace has a reversed polarity of 115 volts. FIX: You will have to correct the wiring polarity after reviewing the wiring diagram. goodman furnace codesItsAShitParty • 1 yr. ago. 1DL means idle as in no the system is not getting any signals from the thermostat. F04 means fan CFM. The 04 would indicate 400 cfm. This is a continuous usually fan CFM. Your system is not getting any heating or cooling signal/running the fan at low speed.Goodman manufacturing. it is displaying code 1dl and the green light is flashing two long, five short. anything I can - Answered by a verified HVAC TechnicianGoodman HVAC unit’s require registration with them to track the warranties. Registration is also required to get the extra additional warranty benefits. Warranty Registration. Most HVAC manufacturers including Goodman, require homeowner to register their Air Conditioner, Furnace and/or Heat Pump in order to get the extra years of their warranty.Having a trane furnace with the code 1DL can be an indication of a problem. Understanding this code and addressing the underlying problem is key to ensuring that your furnace operates as intended. This article will discuss the trane furnace code 1DL, its potential causes, and how you can address them. — The Trane furnace code 1DL is a ... Purchase Your HVAC Equipment Direct | Goodman AC And Furnace ...GMVC95 goodman furnace issue I had a brand new GMVC951155DXA installed in my house, along with a Comfortnet CTK03 thermostat, and brand new DSZC16 heat pump. Immediately after starting the system, I had a prompt on the thermostat that says E2 PS1 (Low pressure switch stuck open).goodman furnace codes The flashing LEDs on your furnace will correspond to a specific fault code that is shown here on their diagnostic chart. Goodman is one of the biggest names in home heating and energy efficient home comfort. My goodman furnace's diagnostic display reads 88. I was away for work and my girlfriend said it was reading e5 so I got her to cut power and change 3 amp fuse. Now it says 88 and im stumped. Furnace d … read more.