Does your Frigidaire dryer display frustrating E31 or E32 error codes? Don’t worry, you can troubleshoot the issue yourself! These codes point to problems with either the moisture sensor or control board. By methodically inspecting wires, connections, and the sensor itself, you can isolate the root cause. With some basic tools and safety precautions, as well as clearly following troubleshooting steps, you’ll have your dryer back up and running smoothly in no time. We’ll walk through diagnosing an E31 open circuit or E32 closed circuit error and detail how to properly reset dryer controls after completing repairs.
Moisture Contact Sensor
The moisture contact sensor is an important part of the dryer that helps determine when clothes are dry. Let’s break down what it does and how it works!
What is the moisture contact sensor?
The moisture contact sensor, sometimes called the moisture sensor, is a device located at the back of the dryer drum. Its main job is to detect when clothes are dry so the dryer knows to turn off.
Where is the moisture contact sensor located?
You’ll find the moisture contact sensor right at the back of the dryer drum. It’s mounted on the inside wall at the rear of the drum.
What are the main components?
The moisture contact sensor itself is made up of two important parts:
- Metal strips – These are narrow conductive metal strips located very close together inside the sensor.
- Sensor circuit – An electrical circuit connects the metal strips to the dryer’s control board. This allows the sensor to communicate moisture readings.
How does the moisture contact sensor work?
The moisture contact sensor works using a pretty simple principle. The two metal strips are very close together but don’t normally touch. When moisture is present between the strips, it allows electrical current to flow between them through the completed circuit.
When clothes dry out, the moisture evaporates away. This causes an open circuit as the strips no longer touch through moisture. The control board notices this change and knows the clothes are dry. Neat, right? It’s a great, simple way for the dryer to “sense” moisture levels without complicated parts.
Causes of E31 and E32 Sensor Errors
Alright, so now that we understand how the moisture sensor works, let’s talk about what could go wrong and cause an error code. The two main error codes related to moisture sensor issues are E31 and E32. What situations might lead to these codes showing up?
E31 Error Code Causes
An E31 error means the dryer has detected an open circuit condition with the moisture sensor. This could arise due to a few different issues:
- Foreign objects stuck in the sensor – Sometimes lint, small toys, or coins can get lodged between the metal strips and prevent a complete circuit.
- Damaged wires – Over time, wire insulation can crack or break, risking shorts if wires touch each other or the drum. Broken wires can’t carry the circuit signal.
- Defective control board – If the control board itself has gone bad, it may not read the sensor circuit properly even if it’s completed.
Any of these situations could cause the E31 open circuit error. The sensor is not detecting moisture flow.
E32 Error Code Causes
On the other hand, an E32 error means a closed circuit is being detected when it shouldn’t be. This generally points to:
- Buildup on the strips – Things like residue, dirt, or rust can insulate the strips even when dry and falsely indicate wetness.
- Damaged insulation – Cracked or worn wire casing may let strips touch each other constantly.
- Defective control board – Again, a board issue could mean it doesn’t recognize the sensor is always completing the circuit.
So, in summary, E31 = open circuit and E32 = closed circuit issues with the moisture sensor or related wiring and components.
Tools and Safety Precautions
Now that we understand the moisture sensor and possible issues, it’s important to review some key tools you may need and important safety tips before doing any work. Safety should always come first!
Tools You May Need
When checking out the moisture sensor, these tools can help with testing and repairs:
- Multimeter – This handy device tests voltage and continuity, which is useful for checking wire conditions and connections.
- Insulated gloves – High-heat appliances warrant extra protection for your hands.
- T8 or T10 Torx screwdriver – Common security screw sizes used inside dryers.
- Flashlight – This is for illuminating tight, dark spaces inside the drum and cabinet.
- Mirror – Helps see around obstructions in the drum interior.
- Vacuum – Removes any lint or debris discovered during testing.
Top Safety Precautions
Some key rules to follow when working inside any appliance:
- Disconnect power – Always unplug the dryer before opening up parts to avoid shock.
- Allow cooling – Wait until the machine fully cools to avoid burns from any hot components.
- Clear work area – A clean, clutter-free space prevents slips, trips, or falls.
- Protective equipment – Insulated gloves and glasses safeguard eyes and hands.
- Take your time – Rushing often leads to accidents, so focus on safety over speed.
Following these basic tools and safety rules will help ensure comfortable and worry-free troubleshooting. Don’t hesitate to call a pro either if you have any concerns about personal safety. Your well-being comes before all else!
Troubleshooting E31 Error Code
Alright, with an understanding of moisture sensors and safety, let’s dive into troubleshooting a dryer displaying an E31 error code. Follow along step-by-step:
Step 1: Disconnect Power
First things first – unplug that dryer! We don’t want any power running until the problem is fixed.
Step 2: Inspect Wires
Take a close look at all the sensor wires. See any cracks or breaks in the rubber coating? Frayed or pinched wires can cause issues.
Step 3: Check for Shorts
Use a multimeter to test for any wires that may be touching where they shouldn’t. A short could trip that error.
Step 4: Inspect the Sensor
Remove the sensor and check the metal strips. Is any debris lodged between them? Bent strips or scratches?
Step 5: Test Resistance
With the multimeter, check that resistance changes as strips are touched together vs apart. Reads ohms when dry?
Step 6: Fix and Reinstall
If you find any damage, replace parts like sensors, wires, or board. Then reinstall and plug in!
Does this step-by-step give you a clear process? Remember to unplug first before inspecting anything.
Troubleshooting E32 Error Code
Now, let’s look at troubleshooting for an E32 error code. As a reminder, E32 means the sensor is stuck closed – always thinking it’s wet!
Step 1: Disconnect Power
Once again, unplug before doing any work inside. Safety first!
Step 2: Inspect Wires and Connections
Check wire ends for corrosion, breaks in the rubber, or loose connections. Either could cause a constant circuit.
Step 3: Test Wire Continuity
Use your multimeter to ensure each wire provides uninterrupted connectivity from the sensor to the control board.
Step 4: Check for Buildup
Inspect the sensor strips. Any residue, dust, or debris insulating the space between them?
Step 5: Test the Sensor
With multimeter, check continuity between sensor prongs both together and apart. Stuck closed or open as it should?
Step 6: Replace Control Board
If sensor and wires check out okay, the control board may be wrongly reading the sensor circuit. Time for an upgrade?
Resetting Dryer Controls After Repair
Once you’ve successfully diagnosed and fixed the root cause of E31 or E32 error, it’s important to properly reset the dryer controls. This clears any stored error codes.
Step 1: Plug the Dryer Back In
Safely plug your dryer back in after completing repairs to the moisture sensor.
Step 2: Enter Diagnostic Mode
To clear error codes, you need access diagnostic functions. Consult your manual for the specific process, like pressing a button sequence.
Step 3: Follow Display Prompts
The display will guide you through resetting stored codes. Listen carefully and respond as directed.
Step 4: Run a Test Cycle
Now run the dryer through a full cycle, even if no clothes are inside, to thoroughly check everything.
Pay close attention to how the dryer operates during the cycle. Does the drum turn correctly? Do you hear the motor, blower, and heater working properly?
Most importantly, keep an eye out for any error codes popping up again after reset. This helps confirm whether your repairs fully addressed the underlying issue.
With reset and test complete, you’re all set! Be sure to congratulate yourself on a job well done with troubleshooting. Improving skills feels great, right?
Conclusion
We’ve covered a lot in learning about moisture sensors and troubleshooting dryer error codes E31 and E32. To summarize what we’ve discussed:
- Moisture sensors detect when clothes are dry using a simple circuit between two metal strips
- Issues like debris, wires, or control boards can cause open or closed circuit errors
- Key tools like a multimeter and basic safety steps keep you safe during repairs
- Methodically checking wires, connections, strips, and components fixes problems
- Clearing codes and running a test cycle ensure successful moisture sensor repairs
We hope this detailed look provided a clear understanding of moisture sensors and how to troubleshoot them. Being able to fix small appliance issues yourself saves money versus calling a repair technician. Plus, it feels great to gain new skills.
Please remember that safety should always come first. Don’t hesitate to consult a professional if you have any concerns about working on live circuits. Taking extra care protects you and leaves more time for enjoyment.