20 Most Recent Raypak SpaPak Spa & Hot Tub Electric Heate... Questions & Answers

If you do not keep close watch on your water chemistry, depending on your location , you could have a large calcium build-up or salt build up on your electric heating element. Also, these models are meant for spas, and depending on the weather in your location, the heater might have trouble keeping up.

As you did not list your model number here, I cant help much.
But I can tell you that when a Raypak heater gives you a ROL code, this means that there has been a flame rollout detected by the one time use rollout switch located usually in the front left portion of the cabinet. The rollout switch is made of ceramic and is about 1 inch across, and looks to be oval. There will be two wires coming out of the ceramic switch.

The part number for this switch is: 005899F

It can be found at any online pool parts store.

Its easy to replace yourself, but once the heater is running again, you will have to watch it closely and figure out what made it trip. Ive never seen one of these trip falsely, which means you probably have another problem with your heater. Things that can make this switch trip would include,

-Failure to service annually.
-Failure to clean and inspect the heat exchanger every 6 months.
-incorrect gas supply or piping
-high winds
-incorrect venting (indoors only)
-water inside the burner tray

The error codes and buzzing sound you are experiencing with your Raypak RP2100 heater indicate potential issues with the ignition and flame sensing components. Here are some troubleshooting steps you can take: 1. Check Gas Supply: Ensure that there is an adequate supply of gas to the heater. Make sure the gas valve is fully open and that there are no obstructions or leaks in the gas line. 2. Inspect Ignition System: The CFH (Call For Heat) and SPK (Spark Ignition) codes suggest that the heater is having trouble igniting. Inspect the ignition system components, including the spark electrode, ignition control module, and wiring connections. Clean any debris or corrosion that may be affecting the spark ignition. 3. Check Flame Sensor: The buzzing sound you hear could be related to the flame sensing system. The heater may not sense the presence of a flame, causing it to shut down. Inspect the flame sensor for any buildup of soot, debris, or corrosion. Clean the flame sensor using a soft cloth or a non-abrasive brush. 4. Verify Proper Ventilation: Ensure that the heater's venting system is clear of any blockages. Blocked vents can lead to incomplete combustion and affect the heater's ignition process. 5. Consult the Owner's Manual: Refer to the owner's manual for your specific model of the Raypak RP2100 heater. It may provide additional troubleshooting steps and error code explanations that are specific to your unit. 6. Seek Professional Assistance: If the issue persists or you are unable to resolve it on your own, it's recommended to contact a professional technician who is experienced with Raypak heaters. They will have the expertise to diagnose and repair any complex issues with the ignition system. Remember, dealing with gas appliances can be dangerous. If you are not experienced with working on gas heaters, it is best to contact a qualified professional to ensure proper troubleshooting and repairs.

It sounds like there may be a problem with the temperature sensor on your Raypak 399L spa heater. The "sensor failure" message indicates that the heater is not able to detect the temperature of the water in the spa. This can prevent the heater from starting up and operating properly. Here are a few things you can try to troubleshoot the issue:

1. Check the wiring: Make sure all of the wiring is securely connected and there are no loose wires or damaged connections.
2. Check the temperature sensor: The temperature sensor is typically located in the heater itself. Make sure it is securely fastened and there are no visible signs of damage.
3. Test the temperature sensor: Some models of the Raypak 399L have a diagnostic feature that allows you to test the temperature sensor. Consult your owner's manual or a service manual for instructions on how to do this.
4. Replace the temperature sensor: If the temperature sensor appears to be damaged or is not functioning properly, you may need to replace it. This will typically require the help of a qualified service technician.

I hope this information is helpful. If you have any further questions or need additional assistance, don't hesitate to ask.

Hi, Please be careful when dealing with products using gas. Double check that the area around where ignition occurs does not have air blocked off as low oxygen would stop fire from occurring. You can also check fuel level of machine. Thank you.

check gas pressure if ok when goes out possible overheating and shutting off

Check the circuit breakers in the main house box. It may have tripped due to an overload.

sensor failure possible chemistry out of balance header leaking possible overheating check gas pressure also for blocked burner tube

There is a transformer in that unit to convert the high power to probably 24 volts. If it is still working when it is buzzing, the problem is most likely the lamination in the transformer core is loose and vibrating.

Check voltage to the gas valve and make sure it is getting 22-30 bolts when the gas valve opens. Also make sure the regulator is supplying the proper amount of gas per heater specs. Too much gas will make the valve chatter.

That model is obsolete. HP means high pressure, there is a switch on the discharge side of the pump that is tripped and it wont allow the unit to come on.

Heater cool down is very important and needs to be done. A time clock with a firemen switch is how it is normally done. Never run a heater with out water flowing thru it.

All fine that the thermostat clicks when tuned, However just check the contact for Voltage as the contacts do get burnt at times, thus your element is not getting sufficient voltage

This is very common with Raypak. What you hear is the way the air flow drafts through the heater. Raypaks typically draft very well. The rise of the heat off the burners draws in fresh air at the bottom and sides of the heater through the louvers and expels out the top. You need the right mixture of fuel and oxygen for efficient burn and proper draft. A week flame or inefficient fresh air and the heater will not draft properly. A 406 is a very big heater my initial reaction is to check the gas supply. My assumption is the gas line may be undersized, especially if this heater was recently installed in place of a smaller unit. If the gas line is undersized the heater may operate but in time the insides will soot like a chimney and also change the dynamics of the way it drafts. Soot can also be a fire hazard so it is worth having a professional take gas pressure readings.