The issue is it feels like the air coming out of the ducts is not very warm at all, like it's not running at full tilt. Your Rheem C90 heating system may be overheating if you can feel the heat coming from the combustion chamber door. Homeowners decide to go for such an option, in case a single unit wont have enough heating capabilities to keep the whole house warm. After youve switched off the gas control switch, leave the house for 5 minutes to allow the gas in the supply lines to dissipate. You should not smell the gas. It's not a matter that your furnace has a lot of features, sometimes, it stops working. Change the pilot thermocouple if all the previous items check. No appointments. If you see a blink and then another blink in 2 seconds, it means that your furnace is in lockout mode that is going to last for about an hour. The Rheem 90+ efficiency condensing units are some of the most reliable and efficient gas-fired condensing units on the market. Whether youre shopping for a water heater or an entire home heating system, Rheems unique branding strategy makes it easy to identify the most efficient in line that is available on the market today. If your unit not receiving power, you need to reset the circuit breaker if it is tripped off. Bear in mind that your furnace has to be properly serviced, in order for it to be able to drain the water that condensates. Just changed old Ask an Expert Home Improvement Questions HVAC Questions This answer was rated: Rheem classic 90 plus. The actual switch might be stuck or the tubing that is attached to this component is blocked. Rheem offers furnaces in a variety of sizes and models, including the Rheem Criterion gas furnace and the Rheem Criterion II gas furnace. The Classic Plus Series 2-Stage Downflow model is a money-saving, energy-efficient furnace with great performance and impressive durability. If your existing Circuit Board has 2 green lights and NO Amber light. The heater is running all the time even when you set it at the lower point. When you touch the housing, you can feel it warm. Your heating system sounds like its working but doesnt produce heat. The safety device detects the presence of flame rollout (when burner flames come backward) and shuts off the gas valve. One of the most overlooked issues is Power. Press the reset button, no more than twice to reset the unit. Power One of the most overlooked issues is Power. A 5 year parts warranty for all other components. All Rights Reserved, Rheem Classic 90 Plus Troubleshooting - Common Problems and Solutions, Rheem Classic 90 Plus Furnace - Common Issues, Rheem Classic 90 Plus Furnace Troubleshooting. The Rheem Classic 90 Plus model allows the system to operate at a lower level for improved efficiency. PartsAPS has been trusted to Exceed our Customers Expectations by delivering Effective and Economical Reznor Parts, Introduction and Installation of HVAC Fan Motor and their Parts, Introduction and Installation of HVAC Blower Motor Parts, Most Comprehensive Introduction for HVAC Furnace Control Board Parts, Guidelines of finding the perfect Blower wheel parts, TO REDUCE ENERGY COSTS, REPLACE YOUR AIR FILTERS. Featuring the finest in energy efficiency, along with a wide range of customized options, this is an excellent choice for any do-it-yourself homeowner looking to take on some serious heating or cooling challenges. Rheem Tech support: Reference 62-24084 upgrade. The unit will start to blink if there is a fault with the setup. This error can occur if the hot and neutral wires get flipped around. ALL FURNACES BEFORE 1994 WILL NEED A NEW FLAME SENSOR KIT OR THE NEW CIRCUIT BOARD WILL NOT WORK. This furnace is one of the quietest on the market due to its insulated blower compartment, slowly opening gas valve, and specially designed inducer. Remove the filter from the furnaces front panel after shutting off the gas control switch. Although this standard model boasts a great warranty and reliable performance, its not as feature-rich as other models. Classic 90 Plus Warranty Rheem offers a limited lifetime warranty on most furnace models on this Classic 90 Plus series. If it is set at a higher point, you have to press the reset button twice. 1. It can help you save money while maintaining prime comfort levels. You should also clear obstructions from interior vents if any exist. Rheem classic 90 plus. Most Rheem furnace models on the Classic 90 Plus series are covered by a limited lifetime warranty. Check and replace the heat exchanger and gaskets if broken. Here are a few reasons why your pressure switch might not be closing: It looks like the limit switch is closed (though it should be open). Stainless steel is utilized throughout the heat exchanger for corrosion resistance and thermal fatigue reliability. Found it, looks like flame sense is low. ugggg. Lets connect you with a dealer! No Thread specified. After cleaning the filters with a few drops of dishwashing liquid and water, rinse and air-dry them thoroughly before putting them in the Rheem furnace. Hunker may earn compensation through affiliate links in this story. It wont shut down or turn off once it reaches the desired temperature. This model includes all the bells and whistles of a high-performance furnace. All flow models are equipped with either an indoor or outdoor combustion air pipe. After that it goes to a steady blink, with maybe a 1 sec pause in between until the flames go out (thermostat kicks off). These units dont use only flashing LED light sequences, but the furnace can blink a few times with a two-second pause (youll find out what these light codes mean below). From https://www.justanswer.com/ythi\rJustAnswer Customer: I have Rheem classic 90 plus furnace and the two green lights on the circuit board are on but a third yellowish one is not and there is no flame\rPearl Wilson: Assistant: Did you check the furnace's filters?\rJustAnswer Customer: The filter is in place, should I replace those\rPearl Wilson: Assistant: Do you plan on doing the work yourself?\rJustAnswer Customer: Not necessarily but would like to know what is involved before I ask someone to come in and work on it\rPearl Wilson: Assistant: Anything else we should know to help you best?\rJustAnswer Customer: Do you think its the filters I should check\rRick: HVAC Supervisor: Welcome to Just Answer, my name is * * I will do my best to help you with your issue.\rRick: HVAC Supervisor: If my initial response doesnt answer your question then let me know and we can continue our conversation.\rRick: HVAC Supervisor: Please be patient it can take a few minutes for me to respond.\rRick: HVAC Supervisor: If neither of the green lights is flashing then the furnace is not recognizing a call for heat.\rRick: HVAC Supervisor: This could be due to a faulty thermostat or thermostat wiring.\rJustAnswer Customer: There are 3 lights on the integrated circuit board.\rJustAnswer Customer: One green one is labeled OK, the other green one is labeled PWR and both green ones are solid green on, i.e they are not blinking.\rJustAnswer Customer: There is one yellow one on the top and that one is labeled FLM and its doesn't light up at all.\rJustAnswer Customer: Should these lights be flashing or stay solid green?\rRick: HVAC Supervisor: Solid green indicates normal operation.\rRick: HVAC Supervisor: They only flash if there's a fault.\rRick: HVAC Supervisor: The other LED only comes on if the burner is firing.\rRick: HVAC Supervisor: What you describe tells me the most likely culprit is a bad thermostat or bad thermostat wiring.\rJustAnswer Customer: We have two thermostats as there are two zones.\rJustAnswer Customer: Nothing has changed otherwise.\rJustAnswer Customer: Should I change one the thermostat and see it makes a difference.\rRick: HVAC Supervisor: If you have a zoned system the zone controller is another possible culprit.\rRick: HVAC Supervisor: Dealing with a thermostat is relatively easy.\rRick: HVAC Supervisor: Not so with a zone controller.\rRick: HVAC Supervisor: If the furnace doesn't run when either thermostat is turned up then a bad controller is much more likely\rJustAnswer Customer: The zone controller I have is honeywell TrolATemp.\rJustAnswer Customer: The system light turns red after sometime.\rJustAnswer Customer: I am sending you its picture\rRick: HVAC Supervisor: It shows zone 1 as calling so the furnace should respond.\rRick: HVAC Supervisor: Since it isn't you likely have an issue best left to a pro to fix.\rJustAnswer Customer: Ok, thanks\rRick: HVAC Supervisor: You're welcome\rPearl Wilson: Assistant: If you have a home improvement or appliance question and want to chat with an expert now visit justanswer.com/ythi read more Rick HVAC Supervisor 38,293 satisfied customers I have aproblem like this one: Rheem classic 90 plus. An LED that blinks four times followed by a two-second pause is signaling the pressure switch is closed when it should be open. We bought the house 4 years ago. Moreover, the blower section is insulated to decrease noise. The Rheem Classic Series R801C is an upflow/horizontal unit with three-way, multipoise design and industry-first PlusOne Diagnostics. Also, you need to replace any broken or corroded wires as well as electrodes. Call the fire department or the local gas company. A problem during the ignition sequence can be a safety hazard a gas leak, for example so a professional should check the furnace even though turning off power to the furnace off and restarting it might end the lockout. We'll explain its (important) role in your HVAC system. Yet another error that can be caused by a dirty flame sensor. Rheem classic 90+ furnaces are a favorite among homeowners who experience long and cold winter seasons. You can try to turn the furnace off and then reset the system this might end the lockout, but it wont fix the root cause of the problem. So, ideally, you should invite an expert to have a look at your system. Rheem Classic 90 Plus - No Heat. You must perform regular maintenance to ensure the unit operates satisfactorily for years. Rheem Classic 90 Plus gas furnaces are designed for utility rooms, closets, alcoves, or crawl spaces. Date: 01/2003 The problem is that when the thermostat calls for heat, the ignitor glows, the burners light. Turn off the gas control switch and wait 5 minutes then remove the filter from the front panel. However, that doesnt mean theyre perfect. JavaScript is disabled. Turn the switch to "On" position and close the control door. One of a variety of heating, air conditioners, and water heater solutions from Rheem, the Classic 90 plus series has everything you need to make sure that your home is a temperature-controlled year around. My Rheem furnace has an indicator light that will flash different codes based on what the problem is. Replace the transformer if the current is weak. 4 way multi-poise design. This was a new one - two flashes of the green light followed by a few second pause, then two flashes again, etc. A Multi-Meter used to test the Thermocouple. Offering outstanding durability and performance, this unit provides more features than standard models, including a removable exchange heater, aluminized steel construction with maximum corrosion resistance, and thermal fatigue reliability. The origin web server does not have a valid SSL certificate. Features include an integrated control board with dip switches for easy systems set-up, variable-speed blower motor technology for greater humidity control, quieter sound levels, PlusOne Diagnostics, and a PlusOne Ignition System for better longevity and reliability. The furnaces manufactured by Rheem that can be twinned are used in one house together on the same thermostat and ductwork. If you see Soot or smell gas, immediately turn off your furnace and leave the house. We hope this guide helped you on Rheem C90 furnace problems. Please use precautions if you have any respiratory issue. Any broken or corroded wires, as well as electrodes, must be changed. You can hear a light hum (electrical). During lockout, a Rheem furnace will not turn on or function. Why Nest Thermostat Not Turning On? Please follow this Rheem Classic 90 Plus troubleshooting guide to fix common problems. The furnace is working harder than it should. When your house reaches the desired temperature, the burners turn off, but the limit switch stays open and keeps the blowers running to get rid of all the heated air. Some rooms do not get any heat while others are comfortably warm. The integrated control board manages all operational functions, as well as hookups for humidifiers and electronic air cleaners. derekahc Member Posts: 5. Hello all. Have Two solid Contractor's Assistant: Hi. If your circuit breaker is off, you should check for damaged wires that have turned black. Check to see if the thermostat setpoint is higher than the normal temperature. You must also check the pilot thermocouple and replace it if necessary. Also, once the thermostat kicks off 5 mins later it's back on and running the furnace again. There is also a direct spark mechanism ignites the Rheems furnace pilot light, for quick lighting. It Rheem classic 90 plus has many features including low profile 34 inches, molded permanent filters, optional indoor or outdoor combustion air, condensate drain, and more. Your Rheem Criterion gas furnace or Rheem Criterion II gas furnace will generally last 15 to 20 years when you protect it from outdoor elements and perform regular maintenance. Wondering what your Rheem furnace is trying to tell you? Clean the chimney, the duct pipe, and the combustion chamber. Copyright 2023 PartsAPS - HVACR Parts. Maintains energy efficiency across multiple operating speeds and uses less electrical energy than a standard PSC motor, Maintains energy efficiency across multiple operating speeds, 2023 HVAC.com a Magenta Technologies LLC Company, All Rights Reserved, https://www.hvac.com/air-quality/what-is-air-duct-cleaning/, Energy tax credits 2023 for home improvement projects, https://www.hvac.com/resources/energy-tax-credits-2023-home-improvements/, What is an air handler? Remember that the actual switch can be defective. It might be because the units fan is not creating enough ventilation. Rheem has two furnace series, and every model in these series comes with multiple warranties for different components. And the recommended fixes needed during its lifetime. Rheem Classic 90 Plus Common Problems. The price is for the unit only and is $1,150 for the 45,000 BTU for the RGRA-04MEAS model and $2,100 for the 120,000 BTU version. These are the high-efficiency line of downflow or horizontal gas furnaces. Here are a few things to look for when troubleshooting your Rheem Classic 90+ gas condensing unit so you can get it up and running again as quickly as possible. Air duct cleaning is the thorough cleaning of various components of forced air systems that heat and cool your home. You can feel the units housing getting warmer as you touch it. Some of the troubleshooting tips that might save you time are as listed below. The utility bill is high compared to the average winter usage. The Rheem Prestige Series Variable Speed Downflow model is a two-stage operating furnace that provides energy efficiency for smaller spaces. In a nutshell, without this switch, your unit wouldnt be able to regulate the temperature of the air in conjunction with the thermostat. An ECM runs continuously at variable speeds, saving energy and providing even more heating. If you smell gas, immediately turn off your furnace. I have a Rheem Classic 90 Plus in my condo, circa 1998. . Rheem 90-plus furnaces have an average lifespan of 15 to 20 years. You should not smell the gas. Rheem classic 90 plus. A inch or a 5/16 inch nut driver or a bit, a cordless drill used to service the parts. Replace fuses with broken wires or if they turned black. The Rheem Classic 90 Plus high-efficiency gas furnaces provide efficient and pleasant household heating systems. ). This unit includes a constant torque motor and two stages of operation that saves energy and helps maintain optimal comfort. Here is a detailed explanation of all the error codes that might appear on the units display. Remove the plug from the outlet and remove the unit's control door. The Classic Plus Series with Constant Torque ECM Motor and multiple positions can save you money and energy. Turn off the gas control switch and allow the gas in the supply lines for 5 minutes. Why Is AC Mini Split Making Noise When Off? Check if the current arches when it touches one of the contacts. Some rooms do not get any heat. Make sure to clean around the pilot light if it does not light and dry up any water.