Have you heard a clicking sound from your RV furnace, but the blower won’t start? It can be frustrating when you’re left in the cold with no heat.
An RV furnace not working properly can ruin your trip. The clicking sound usually means the furnace is trying to ignite. But if the blower doesn’t start, there might be a different problem. It could be a simple fix or something more complex.
Understanding the common issues and how to troubleshoot them can save you time and money. In this post, we will explore possible reasons why your RV furnace clicks but the blower won’t start. We’ll also provide some helpful tips to get it working again. Stay warm and let’s dive in!
Common Causes
If your RV furnace clicks but the blower won’t start, you may wonder what the issue is. Several common causes can lead to this problem. Understanding these reasons can help you troubleshoot and fix your furnace.
Faulty Thermostat
A faulty thermostat is a common cause. The thermostat controls the furnace. If it isn’t working, the furnace can’t start properly.
Here are some signs of a faulty thermostat:
- The temperature settings are incorrect.
- The display is blank or unresponsive.
- The furnace turns on and off frequently.
Check the thermostat settings. Ensure it is set to “heat” and the temperature is higher than the current room temperature. If the thermostat is battery-operated, replace the batteries. If these steps don’t work, the thermostat may need replacing.
Blown Fuse
A blown fuse can also cause the blower not to start. The fuse protects the furnace’s electrical components. If it blows, the blower won’t get power.
Follow these steps to check for a blown fuse:
- Turn off the furnace and locate the fuse box.
- Inspect the fuses. Look for a broken wire or blackened glass.
- If you find a blown fuse, replace it with one of the same type and rating.
- Turn the furnace back on and see if the blower starts.
If the fuse blows again, there may be a bigger electrical issue. In this case, consult a professional technician.
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Initial Checks
Experiencing an RV furnace that clicks but the blower won’t start can be frustrating. Start with some initial checks. These simple steps can often pinpoint the issue. Begin by examining the power supply and battery voltage.
Power Supply
First, ensure your RV is receiving adequate power. Check if other appliances are working. This can help determine if the problem is with the furnace or the power source.
- Verify that the RV is properly plugged into a power source.
- Ensure the circuit breaker is not tripped. Reset if necessary.
- Inspect the fuses. Replace any blown fuses.
These checks can help you quickly identify power-related issues.
Battery Voltage
Your RV furnace relies on battery power. Low battery voltage can prevent the blower from starting. Use a multimeter to measure the battery voltage.
| Voltage Reading | Condition |
|---|---|
| 12.6V or higher | Fully charged |
| 12.4V – 12.6V | Partially charged |
| 12.0V – 12.4V | Low charge |
| Below 12.0V | Needs charging |
If the voltage is low, recharge or replace the battery. This step ensures your furnace gets the power it needs to start.
Inspecting The Thermostat
If your RV furnace clicks but the blower won’t start, the thermostat may be the issue. The thermostat controls the furnace’s operation. A small problem here can stop the blower from starting. Inspecting the thermostat can help identify and fix these issues.
Calibration Issues
Calibration issues can cause the thermostat to misread the temperature. This can stop the blower from starting. To check for calibration problems, use an accurate thermometer. Place it near the thermostat. Compare the readings. If the readings differ, recalibrate the thermostat. Follow the manufacturer’s instructions for recalibration.
Wiring Connections
Loose or damaged wiring can also cause problems. Inspect the wiring connections to the thermostat. Ensure all wires are secure and undamaged. Look for signs of wear or corrosion. If you find any issues, replace the damaged wires. Tighten any loose connections. This can restore proper function to your RV furnace.
Examining The Blower Motor
If your RV furnace clicks but the blower won’t start, the problem may lie with the blower motor. This component is crucial for the furnace’s operation. Examining the blower motor can help identify the issue. Let’s break this down into two key areas: motor resistance and motor obstructions.
Motor Resistance
The blower motor’s resistance is an important factor. Use a multimeter to check the resistance. Place the multimeter probes on the motor terminals. Compare the reading with the manufacturer’s specifications. A significant difference indicates a faulty motor.
Motor Obstructions
Obstructions can prevent the blower motor from starting. Remove the motor from the furnace. Check for debris or dust. Clean the motor thoroughly. Inspect the fan blades. Ensure they move freely and are not obstructed. A clear motor improves performance.
Checking The Control Board
When your RV furnace clicks but the blower won’t start, the control board might be the issue. It’s the brain of the furnace, ensuring all parts work together. Checking the control board can help you identify problems. Let’s dive into the details.
Board Indicators
The control board often has LED indicators. These lights show the furnace’s status. When functioning correctly, these LEDs flash in specific patterns. Refer to your RV furnace manual for the correct sequences. A steady light could indicate power, while a blinking light might signal an error.
To check the board indicators:
- Turn off the furnace power.
- Locate the control board, usually behind the access panel.
- Inspect the LED lights and note their patterns.
If the LEDs show an error code, consult your manual to determine the issue. This simple check can save you time and effort.
Loose Connections
Loose connections can prevent the blower from starting. Wires might get detached due to vibrations or other movements. It’s crucial to inspect all connections carefully.
| Connection Point | Action |
|---|---|
| Wires to Control Board | Ensure they are tightly connected. |
| Thermostat Wires | Check for secure connections. |
| Blower Motor Wires | Inspect for any loose or disconnected wires. |
After securing the connections, turn the furnace back on. Listen for the blower. If it starts, the issue was likely a loose connection.
Analyzing The Ignition System
When your RV furnace clicks but the blower won’t start, the problem may lie in the ignition system. Understanding its components can help you diagnose and fix the issue. This section will cover two key parts: the igniter function and the gas valve.
Igniter Function
The igniter is crucial for lighting the furnace. It creates the spark needed to ignite the gas. If the igniter fails, the furnace will not start. This can be due to several reasons:
- Worn out igniter: Over time, the igniter wears out and needs replacement.
- Dirty igniter: Dirt and debris can block the spark.
- Electrical issues: Faulty wiring or connections can prevent the igniter from working.
Inspect the igniter for visible damage or dirt. Clean it if necessary. Check all connections to ensure they are secure and intact.
Gas Valve
The gas valve controls the flow of gas to the furnace. If the gas valve does not open, gas will not reach the igniter. This can be caused by:
- Valve failure: The valve may be stuck or broken.
- Blocked valve: Debris can block the gas flow.
- Electrical problems: The valve requires a signal to open, which may not be getting through.
To diagnose a gas valve issue, listen for a clicking sound when the furnace tries to ignite. If you hear a click but there is no gas flow, the valve may need replacement. Ensure the gas supply is turned on and connections are secure.
Testing The Limit Switch
When your RV furnace clicks but the blower won’t start, the limit switch could be the problem. The limit switch is a safety device. It stops the furnace from overheating. Testing the limit switch can help you identify if it is faulty. This process involves two main steps: locating the switch and performing a continuity test.
Switch Location
First, find the limit switch in your RV furnace. It is usually located near the blower assembly. You might need to remove a panel to access it. The limit switch looks like a small, flat metal piece. It has two wires connected to it.
Continuity Test
Next, perform a continuity test. This test checks if the limit switch allows electricity to pass through. To do this, you need a multimeter. Set the multimeter to the lowest ohms setting. Disconnect the wires from the limit switch.
Touch the multimeter probes to the switch terminals. If the multimeter shows a reading, the switch has continuity. If not, the switch is faulty and needs replacing. Testing the limit switch is simple. It can save you from a cold night in your RV.
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When To Seek Professional Help
An RV furnace that clicks but won’t start can be frustrating. Sometimes, fixing it yourself is not possible. Knowing when to seek professional help is important. Let’s explore this further.
Persistent Issues
If your RV furnace continues to click but won’t start, it could signal a deeper problem. Basic troubleshooting might not help. Persistent issues often need a professional touch. They have the tools and knowledge to diagnose problems accurately.
Trying to fix it yourself could lead to more damage. A professional can ensure the furnace is repaired safely and correctly. This prevents future problems and ensures your RV stays warm.
Complex Repairs
Some furnace problems are not easy to fix. Issues with electrical components or the gas system are complex. These repairs require specialized skills. Attempting them without expertise can be dangerous.
Professionals have the training to handle complex repairs. They can identify the exact problem and fix it efficiently. This saves you time and ensures your furnace works properly.
Remember, safety is crucial. A professional can ensure your furnace is safe to use. This protects you and your RV.
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Frequently Asked Questions
Why Is My Rv Furnace Blower Not Starting?
The RV furnace blower might not start due to power supply issues, a faulty thermostat, or a problem with the blower motor. Check the power connections and thermostat first.
How Do I Fix A Clicking Rv Furnace?
To fix a clicking RV furnace, inspect the igniter and gas valve for issues. Clean any dirt or debris. If the problem persists, consult a professional.
What Causes An Rv Furnace To Click?
An RV furnace clicks due to ignition system issues, such as a faulty igniter, gas valve, or low propane levels. Regular maintenance helps prevent this.
Can A Faulty Thermostat Affect The Rv Furnace Blower?
Yes, a faulty thermostat can prevent the blower from starting. Ensure the thermostat settings are correct and consider replacing it if necessary.
Conclusion
Solving the issue of an RV furnace clicking but blower not starting can be simple. Check the power supply first. Ensure connections are secure and batteries are charged. Clean the blower motor and inspect for blockages. Consult the manual for troubleshooting tips.
Seek professional help if needed. Regular maintenance can prevent future problems. Enjoy warm and comfortable travels.
