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Ruud Appliance Error Codes

How do you choose the right HVAC system for your home? What's the difference between an air conditioner and a heat pump, and how do I know which system I need? If you're shopping for a new HVAC system, air conditioner, or furnace, then chances are you've probably asked yourself (or Google) those questions. But here at Ruud you're talking to the experts, their HVAC system selection guides below offer a great starting point for choosing the best HVAC system for your home, and once you're ready to find a trustworthy and licensed installer, they have got you covered with Ruud's nation wide network of vetted Ruud HVAC contractors.


Air Conditioner Error Codes

CODE: Green "POWER". 
PROBLEM: Module has power. 
FIX: Supply voltage is present at module terminals. 

CODE: Red "TRIP". 
PROBLEM: Thermostat demand signal Y1 is present, but the compressor is not running. 
FIX: Compressor internal overload is open. Broken wire or connector is not making contact. Low pressure switch open, if present. Compressor contactor has failed open. 

CODE: Yellow "ALERT" Flash Code 1. 
PROBLEM: Long Run Time Compressor is running extremely long run cycles. 
FIX: Low refrigerant charge. Evaporator blower is not running. Evaporator coil is frozen. Faulty TXV. Condenser coil is dirty. Liquid line restriction (filter drier blocked if present in system). Thermostat is malfunctioning. 

CODE: Yellow "ALERT" Flash Code 2. 
PROBLEM: System Pressure Trip Discharge or suction pressure out of limits or compressor overloaded. 
FIX: Condenser coil poor air circulation (dirty, blocked, damaged). Condenser fan is not running. Return air duct has substantial leakage. If low pressure switch is present, check flash code (1) information. 

CODE: Yellow "ALERT" Flash Code 3. 
PROBLEM: Short Cycling Compressor is running only briefly. 
FIX: High head pressure. Thermostat demand signal is intermittent. Time delay relay defective, if present. Hot gas sensor defective, if present. 

CODE: Yellow "ALERT" Flash Code 4. 
PROBLEM: Locked Rotor. 
FIX: Run capacitor has failed. Low line voltage (contact utility if voltage at disconnect is low). Excessive liquid refrigerant in compressor. Compressor bearings are seized. 

CODE: Yellow "ALERT" Flash Code 5. 
PROBLEM: Open Circuit. 
FIX: Compressor contactor has failed open. High pressure switch is open, If present. Open circuit in compressor supply wiring or connections. Unusually long compressor protector reset time due to extreme ambient temperature. Compressor windings are damaged. 

CODE: Yellow "ALERT" Flash Code 6. 
PROBLEM: Open Start Circuit Current only in run circuit. 
FIX: Run capacitor has failed. Open circuit in compressor start wiring or connections. Compressor start winding is damaged. 

CODE: Yellow "ALERT" Flash Code 7. 
PROBLEM: Open Run Circuit Current only in start circuit. 
FIX: Open circuit in compressor run wiring or connections. Compressor run winding is damaged. 

CODE: Yellow "ALERT" Flash Code 8. 
PROBLEM: Welded Contactor Compressor always runs. 
FIX: Compressor contactor has failed closed. Thermostat demand signal not connected to module. 

CODE: Yellow "ALERT" Flash Code 9. 
PROBLEM: Low Voltage Control circuit < 17VAC. 
FIX: Control circuit transformer is overloaded. Low line voltage (contact utility if voltage at disconnect is low).


Furnace Error Codes

CODE: 0. 
PROBLEM: Standby. 

CODE: C. 
PROBLEM: Compressor on (cooling or heat-pump heat). 

CODE: H. 
PROBLEM: Gas heat on. 

CODE: F. 
PROBLEM: Continuous fan on. 

CODE: 10. 
PROBLEM: 1 hour lockout. 

CODE: 11. 
PROBLEM: Failed ignition. 

CODE: 12. 
PROBLEM: Low flame sense. 

CODE: 13. 
PROBLEM: Flame lost. 

CODE: 14. 
PROBLEM: Unexpected flame. 

CODE: 20. 
PROBLEM: Twinning fault. 

CODE: 22. 
PROBLEM: Main limit open. 

CODE: 26. 
PROBLEM: Line and neutral reversed. 

CODE: 33. 
PROBLEM: Mrlc (manual reset limit control) (aka roll-out) open. 

CODE: 55. 
PROBLEM: Pressure switch stuck closed when should be open. 

CODE: 57. 
PROBLEM: Press switch stuck open when should be closed. 

CODE: 61. 
PROBLEM: Blower fault-blower unable to run. 

CODE: 93. 
PROBLEM: Internal control fault.


Heat Pump Error Codes

Ruud heat pumps may use error codes to help diagnose and troubleshoot issues. The specific error codes can vary depending on the model and type of your Ruud heat pump. It's crucial to refer to your heat pump's user manual or technical documentation for accurate information about error codes.

Here are some general Ruud heat pump error codes and their potential meanings. Keep in mind that these are generic examples, and your specific model may have different codes:

F: Defrost Control (DFC) - Indicates a problem with the defrost control. This could be related to issues with the defrost thermostat, defrost control board, or sensors.

H: High-Pressure Sensor Fault (HPF) - Indicates a fault with the high-pressure sensor. This could be caused by issues such as a malfunctioning sensor or a high-pressure condition.

L: Low-Pressure Sensor Fault (LPF) - Indicates a fault with the low-pressure sensor. This could be caused by issues such as a malfunctioning sensor or a low-pressure condition.

C: Open Circuit or Sensor Fault (OSF) - Indicates an open circuit or sensor fault. This could be related to various sensors within the heat pump.

Other Codes: There may be other codes specific to your model, and their meanings will be outlined in the user manual.

Always refer to your specific model's documentation for accurate information about error codes and their meanings. If you encounter an error code on your Ruud heat pump, it's advisable to consult the user manual first. The manual typically includes a troubleshooting guide that may provide steps to address common issues associated with specific error codes. If you're unable to resolve the problem or if the issue persists, it's recommended to contact Ruud customer support or a qualified HVAC technician for assistance. They can provide accurate diagnostics and perform any necessary repairs.


Water Heater Error Codes

CODE: Slow Flash  
PROBLEM: Normal Operation   
FIX: No problem. 

CODE: Fast Flash  
PROBLEM: Normal Operation. Call for heat.  
FIX: Wait until gas control generates a self-reset. 

CODE: Solid Red LED  
PROBLEM: Lockout condition. Internal failure detected.   
FIX: Replace gas control. 

CODE: 2 Flashes  
PROBLEM: Lockout condition. Ignition failure.   
FIX: 
• Third failed ignition attempt. Unplug to reset control. 
• Contact local qualified service agent. Make sure manual gas shut-off valve is open. If pressure is too high the valve will not operate.  
• Clean any scale buildup from burner and pilot assembly. 
• The spark ignitor assembly could be damaged or broken. If so, replace assembly. Bleed air from gas line. 

CODE: 3 Flashes  
PROBLEM: Lockout condition. Switch fails to open.   
FIX: 
• Contact local qualified service agent. 
• Check for blockage in the vent system. 
• Replace pressure switch. 

CODE: 4 Flashes  
PROBLEM: Lockout condition. Switch fails to close.   
FIX: 
• Contact local qualified service agent. Inspect vent pipe and dilution air inlet for blockage.  
• Make certain proper ventilation air is supplied.  

CODE: 5 Flashes  
PROBLEM: Lockout condition. Neutral polarity failure.  
FIX: Verify electrical supply outlet polarity. 

CODE: 6 Flashes  
PROBLEM: Lockout condition. ECO failure. 
FIX: Replace valve.



Ruud Appliance Error Codes

Ruud appliance fault codes

Ruud appliance diagnostic codes

Ruud appliance error symbols

Ruud appliance common faults


Product Reviews:

We purchased our ruud HVAC systems three years ago, HAVE HAD NOTHING BUT BR
We purchased our ruud HVAC systems three years ago, HAVE HAD NOTHING BUT BREAK DOWNS. As far as I am concerned these systems are a JUNK!!! Do not waste your money Last won was a leaking Acoil. One thousand dollars out of pocket to repair
Published: June 2, 2022
lonnie stewart
Source: highperformancehvac.com

Hurray for Ruud. I’m so happy this turned out great. I was skeptical abou
Hurray for Ruud. I’m so happy this turned out great. I was skeptical about replacing my air conditioner because the online reviews gave me the impression that there is nothing really worth the trouble out there. I got this Ruud because a friend of mine reassured me of its excellent services. For 7 months now the unit hasn’t given me any problems. Only had to fix it once and that was covered by the warranty.
Published: October 6, 2020
pickhvac.com Tyler, TX
Source: pickhvac.com

Features that make an air conditioner perform well and last long are in eac
Features that make an air conditioner perform well and last long are in each unit that Ruud makes, no matter the level. Quality matters to Ruud, so every system has optimized access ports for servicing, powder coated paint and rust-resistant screws. They also have an excellent SEER rating, and no unit is below 15.5.
Published: December 6, 2019
furnaceprices.ca
Source: furnaceprices.ca

I’ve owned my furnace for 8 years and I believe I’m still counting. I h
I’ve owned my furnace for 8 years and I believe I’m still counting. I have never encountered any issues with the machine and I tend to think or negative reviews are all propaganda either by competitors whose intention is to bring down its reputation. Its price is also quite affordable in comparison with other heat furnaces of the same specifications and lower specifications across different brands. I can never compare this to my initial Amana heat furnace which was serviced as frequently as every two months and would definitely recommend this heat furnace to anyone looking to purchase a furnace anytime soon.
Published: July 7, 2020
pickhvac.com Montana
Source: pickhvac.com

Things are going well so far. I haven’t had any trouble with the Ruud AC
Things are going well so far. I haven’t had any trouble with the Ruud AC I bought. I got it 5 months ago to replace the old one which couldn’t cool the house anymore. Thanks to Ruud and a nice dealer here, I can enjoy the comfort of my home.
Published: November 6, 2020
pickhvac.com Modesto, CA
Source: pickhvac.com

Installed a Ruud 50 gal electric water heater from Home Depot in March 2017
Installed a Ruud 50 gal electric water heater from Home Depot in March 2017. Came with galvanized input/output isolation nipples factory installed. Connected to my PEX plumbing with brass adapters, using teflon tape and paste. Within one year, started corroding and seeping at galvanized threads. Galvanizing on threads appeared to be extremely thin and did not last. Today (Feb 2019) paid plumber to come replace the nipples. Had to mail order special Ruud extra long nipples - non-standard size not stocked by any of several sizable plumbing supply distributors. They look to be exactly like ones that failed. Will these ones last? Lived in this house 43 years. This is my 3rd water heater. Never a corrosion problem with other isolation nipples. Why couldn't Ruud use good quality, standard length nipples that are locally available?! Disappointed!
Published: February 27, 2020
Lance of Carlisle, PA
Source: consumeraffairs.com

My Ruud furnace is installed in the basement of the house. It is however to
My Ruud furnace is installed in the basement of the house. It is however too noisy and sounds more like a manufacturing room. When purchasing the sales representative assured me that the unit wasn’t any noise. So I thought this was enough reason to raise alarm. On calling the customer care service, they told me otherwise, that this was a usual occurrence. I still have to bear with the noise because I’m not in a position to purchase another right now.
Published: September 7, 2020
pickhvac.com Seattle
Source: pickhvac.com

I am nothing short of satisfied. Ever since I purchased this unit that is s
I am nothing short of satisfied. Ever since I purchased this unit that is six years ago. My initial unit kept on leaking water making my house messy and one had to be alert always. I always called the technician to do repairs who later on recommended to me the Ruud unit. It’s highly efficient without too much cost of electricity. Its price was also quite affordable. Its installation was quite easy. Winters are no longer stressful for us. Ruud has been the furnace I’ve come across so far.
Published: October 7, 2020
pickhvac.com Canada
Source: pickhvac.com

DO NOT BUY A RUUD!!! I splurged and bought the higher end unit. less than 2
DO NOT BUY A RUUD!!! I splurged and bought the higher end unit. less than 2 years old and already I have an expensive repair. I live in VA so it’s not even a harsh winter. And the air filters don’t fit at all. Had a Trane for 23 years and the only thing I ever had to do was replace a capacitor one time. SAVE YOUR MONEY… BUY A TRANE
Published: January 15, 2019
John Wenger John Wenger
Source: highperformancehvac.com

Ruud’s company slogan was once, “There are some things in life you can
Ruud’s company slogan was once, “There are some things in life you can always rely on. Ruud is one of them.” While that was a long time ago, Ruud water heaters are still synonymous with quality and one of the most respected brands in the industry.
Published: November 23, 2020
waterheaterhub.com
Source: waterheaterhub.com

We have had the same ac unit for the last 18 years. After such a long time
We have had the same ac unit for the last 18 years. After such a long time a replacement is usually a better bargain than repairing. So we went ahead and bought this Ruud. I like how quiet it runs. It functions perfectly and does take much to run so the utility bill is low. This is what good manufacturing is all about.
Published: August 6, 2020
pickhvac.com Albany, GA
Source: pickhvac.com

The most unreliable furnace I’ve ever come across. It has failed me in ov
The most unreliable furnace I’ve ever come across. It has failed me in over three winters in which we literary froze. The first failure came when the circuit board had issues. The repairman has already had frequent visits to my house more than the mailman and pizza delivery man comes. I would have rather kept my old furnace instead of getting this Ruud which has been nothing short of a nuisance and less performance. I’m quite sure when replacing it I will not have Ruud among my options.
Published: August 7, 2020
pickhvac.com Farmington, MN
Source: pickhvac.com

We had a few issues within the first year of operation with our water heate
We had a few issues within the first year of operation with our water heater, tripping our breaker and electrician thought he figured out the problem with the unit, despite it being properly installed anyway. Last night upon returning from dinner we walked into our home full of an electrical burning smell. Through elimination the results were that our water heater had blown out its wiring on the front electrical panel, as we could see black smoke all around it and coming from the unit. The breaker had fortunately already tripped from the over load, but we turned it off and cut off the water supply as a precaution. We immediately contacted one of our electricians that is used for our company. He arrived today (following day). I contacted Rheem and the moment they heard the model number, he said, "Take it back to Home Depot immediately and they will replace it for you". After further investigation I discovered a recent total recall was issued for more than 54,000 units sold exclusively at Home Depot from 2014 to 2016 all for the same problem. Almost 300 reports have been made and one involving more than $5500 in damage.
Published: August 8, 2016
Randolph of Charlotte, NC
Source: consumeraffairs.com

I paid 5500 dollars for the ruud unit to be installed in 2016 , it has brok
I paid 5500 dollars for the ruud unit to be installed in 2016 , it has broke down every year since, service repair is out of site. Last year it broke down in Aug. (I live on the gulf coast, very hot) I was without air for 2 weeks. Coast around 800 to repair, this year during a cold spell it quit heating, repairman said coil was leaking and would cost around 900 to replace plus 200 for the service call. That is 1200 dollars, what next. If it breaks again I will have it taken out and sit it on my utility to. With a sign that says it is a pc. Of junk and pull it around everywhere.
Published: January 19, 2019
Carl
Source: highperformancehvac.com

I bought new high end 50 gal electric water heater. After cost of installin
I bought new high end 50 gal electric water heater. After cost of installing, the top element was not working. It seems company does not make sure all is working before selling. They were good to send a new heater element but took a week with no hot water and difficulty in installing with specialized tool that no suppliers sell because they used a non conventional screw size.
Published: February 27, 2021
Dan of Maple Ridge, BC
Source: consumeraffairs.com

DO NOT buy a Ruud. Unreliable with error codes that even their factory and
DO NOT buy a Ruud. Unreliable with error codes that even their factory and other trained techs can not resolve. Loud, constant malfunction, and other maladies too numerous to list. T971 applies most often.
Published: December 20, 2019
PTG PTG
Source: highperformancehvac.com

We owned a Ruud electric 50 gal, water heater. We bought it in 10/2016. We
We owned a Ruud electric 50 gal, water heater. We bought it in 10/2016. We had a leak and called Ruud yesterday to make a claim. Within 15 minutes we had a claim # and was told to return the unit to seller [Home Depot]. We did and picked up a new Ruud electric water heater. We decided to buy an upgraded Ruud and have hot water once again. All good. Based on OUR experience we give Ruud customer service and warranty 5 *****..
Published: September 13, 2020
Peter of Altamont, NY
Source: consumeraffairs.com

The temperatures can really go high in the summer days. You can’t imagine
The temperatures can really go high in the summer days. You can’t imagine my frustration when my AC broke last summer. For about 2 weeks we had to go without any air conditioning. I was in a rush to get the problem fixed so I got this Ruud but I didn’t know much about the unit. Finally, the problem was solved but then I wasn’t sure the unit would hold up without breaking down. So far so good, haven’t had to do anything except routine maintenance.
Published: September 6, 2020
pickhvac.com Pompano Beach, FL
Source: pickhvac.com

Ruud is a good brand for Canadians who are looking to save on their monthly
Ruud is a good brand for Canadians who are looking to save on their monthly utility bills with a furnace upgrade. Ruud furnaces will deliver the energy efficiency that they’re looking for at affordable pricing options.
Published: November 7, 2020
furnaceprices.ca
Source: furnaceprices.ca

Don’t buy a ruud heat pump i bought one in 2016. Warranty was 10 years (p
Don’t buy a ruud heat pump i bought one in 2016. Warranty was 10 years (parts). It has cost me money every year, last year around 800 dollars this year they tell me it has a freon leak and to replace the part and freon will be around 1000 dollars. What next.
Published: January 19, 2019
Carl whitlock
Source: highperformancehvac.com

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