Raypak heater "Rollout SW Open" (2024)

We bought a new heater this season, a Raypak 206,000 BTU NG Electric Heater RHM-15-9962. It heated the pool nicely earlier in the week, but we turned it off when a cool spell was forecast. This morning I tried to turn it on and I get this error message: "Rollout SW Open". What does this mean? I appreciate the help.

Here is what I found in the manual: Roll Out Sw Open - Rollout Switch - verify gas pressure, combustion air, blocked heat exchanger, proper vent size/connections, high wind conditions.

Thank you for your reply. It definitely says "Rollout SW Open". I will call the installer for the repair.

Our heater is still not fixed. They determined it wasn't getting enough gas so the gas company replaced our meter. Turned it on and the same thing happened. Now they say the wind diminished the flame and did something to the fireman's switch. Fireman's switch replaced and the wind keeps blowing out or diminishing the flame. Back and forth on how to protect it from the wind. Anybody with advice?

The only thing you can do is add a wind stack to it. You've never had this issue before wind?

Our previous heater never had this problem. It was old and inefficient (still worked), but we wanted to upgrade.

Add the Raypak high wind stack. Probably $100 or around there.

Thanks for the help. I appreciate it!

How did you solve the problem

I wonder if you have a bad roll out switch. My old RP2100 heater had a wax one and I replaced it with a solid state one. It had a red reset button on it. That solved my roll out problem at the time. They also sell roll out switches that have different shutoff temps by about 10-15deg if I remember but you may not want to go there. I did buy one of the solid state versions which was higher but didn't need it.

I have the same problem. Just happened to me today. I bought and got my heater installed in October 2013 and it heated the pool really nicely. I haven't used the heater in about a week. It's been really hot in Toronto. Today I wanted to do an evening swim with the kids and my wife so I thought I'd turn it on and had the "Rollout SW Opem" message. I thought it was a glitch so I cut the power to the unit and turned it back on, cut the gas and turned it back on, opened up the panel and cleaned any debris I could with a cloth rag and nothing. After reading the comments here I have located the switch but it does not have a reset button. I read somewhere that the newer models do not have one. Is it time to call for service or is there anything else I can do on my end? RSVP

If it is a Raypak heater, the roll out sensor is a one time use part, like a fuse, it isnt re-settable. I would replace it, leave the front cover removed, start the heater, and observe if the flame "rolls out". If you see this happen, turn off the heater immediately, and have a tech check the exchanger for sooting.

You can jumper across the roll out sensor to see if it starts. This is just for testing purposes and shouldn't be left that way. Might have blown the replaced sensor again or may have some other board issue.

To jumper across you need a wire across the two terminals where the fuse (roll out sensor) is plugged into. If you do any electrical testing you usually have an alligator clip jumper wire which has one on both ends. But as said before this would be temporary.

@wjr75 Thanks for the tip but I know verrrry little about electrical work and I don't even know what an alligator clip jumper wire is. At this point I may bite the bullet and call a tech. Kudos for your help though.

Yes if you don't know much about electric or gas, call a tech and have them check it out.