Question about Rheem 266K to 399K BTU Swimming Pool Natural Gas Heater ()

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Opened pool. Rheem heater has the service light blinking

Opened pool, turned the pool heater on and blinks SNS, ROL and in top corner the service light blinks.
Any easy solution

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  • Rheem Master
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  • ROL - Roll out/Fusible Link sensor is 'Open Circuit'
  • SNS - Temperature Sensor/Thermistor Failure
Do not just, replace the Roll out sensor! Something caused this to burnout, it is a one time Gig for this sensor. Most likely, a flame rolled out the front instead of going up through the top. If it's indoors then chances are the heat exchangers are sooted up.
FIX THIS! Have the reason identified, and then repair it.
If it's an outdoor installation it still could be sooted exchangers, or a downdraft by a wind gust? Then you will need a vent cap, NOT a draft hood. There is a difference.
Sooting is caused by improper gas pressure or not enough Free Air for Proper Combustion! If there is not enough free air coming in from the outside unobstructed, into an equipment room where the heater is installed indoors, you need to have fresh air for proper combustion and ventilation. Otherwise the flame burns dirty, resulting in a very sooted heat exchanger.

Posted on Apr 28, 2015

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  • Expert
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Rollout switch is open, and sns is a sensor failure. replace rollout switch, clean out vents, inspect heat exchanger. water sensor senses too cold or too hot water

Posted on Mar 10, 2014

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Posted on Jan 02, 2017

  • 139 Answers

SOURCE: I get SNS Error on my Raypak Digital pool heater display . . .

refers to flame sensor in combustion chamber

Posted on Jun 20, 2009

  • 990 Answers

SOURCE: Our pool heater is flashing ROL which says a

This is a roll out switch and is good for one shot. It is a wax switch that opens if the flame comes out the front of the cabanit. Cheap and easy to replace, but and theirs always a but. Something caused the rollout. Could be a down draft wind condition you would fix with a draft hood. Sooted heatexchanger or rat nests inside the cabanit will do this also. A through cleaning would be in order here, and for at least the first time a pro would be in order. You may be able to watch and do this yourself but I would find someone who will let you learn while he does this. Good luck.

Posted on Apr 03, 2010

john224
  • 1378 Answers

SOURCE: raypak heater. fault cde says (ROL)

Thank you for posting your question here on Fixya.com.

Replacing the roll out switch is an easy do-it-yourself repair. Fixing the problem causing the roll out of the burner flames in the first place is a bit more of a pro job. Something is causing to much heat to roll out the the combustion chamber into the control area causing the switch to fail. You will continue to burn the link until the underlying problem is fixed.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!

John

Posted on Jun 01, 2010

StepehnD
  • 78 Answers

SOURCE: service code ROL

This indicates the flame roll out safety switch is bad. This part is usually mounted right above the burner tray. It is a white ceramic piece with two wiring terminals and an external part that looks like a resistor. This part detects flame/heat coming out from the burner tray. When replacing it, be sure to check for blockage at the burner tray, heat exchanger and the flue if vented with duct work. This is a critical safety device so do not bypass it.

Posted on Jun 19, 2010

macdirk
  • 116 Answers

SOURCE: I have a Rheem raypack pool and spa heater. I have

Error Code ROL is "HEAT ROLL-OUT SAFETY SWITCH OPEN". The heater is equipped with a cutoff device to prevent flame roll-out in the event the heat exchanger becomes blocked. This is either a "manual reset", or "Single-use" type fusible link/thermal fuse, that must be replaced or reset after any over temperature conditions have been fixed. Excessive restriction in the heat exchanger flue passage may cause the switch to disable the heater. I don't know your exact model so I'm just generalizing. If you reset or replace the switch, and it trips/burns out again, then you need to address what is causing it. make sure the heater is cleaned out well and no debris is blocking the flue. I fthis doesn't help you can always try calling Raypak Service department at (805) 278-5300.

Posted on Sep 20, 2010

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Rheem 266K to 399K BTU Swimming Pool Natural Gas Heater keeps failing and giving me a ROL and SPR code. The thing is a little over a year old and only been used 1x last winter (we live in Florida). Cannot...


ROL code means Rollout.
This heater used a one time use switch in the cabinet on the left hand side.
The switch will look like a ceramic oval disk about 1.5" in diameter. It will have two wires coming from it.
This switch is one time use because it mean your heater is getting a bad burn. This could be happening due to:

1. High wind situation (could be random)
2. Incorrect gas supply
3. Incorrect venting (if indoor)
4. Obstruction on top of the burner tray.

There was a recall on the refractory kit with some of these models, causing the fire walls to crack off and fall on top of the burner tray. Thus causing the flames to rise too high inside the cabinet and therefor trip the rollout switch. The timeline for the recall matches your heaters date.

E-mail me if you need more help.
ahudson43@yahoo.com

Dec 28, 2010 | Rheem 266K to 399K BTU Swimming Pool...

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I have a Rheem raypack pool and spa heater. I have an error message in the display: "ROL". Can you please describe the issue and possible solutions. Thanks, Stan.


Error Code ROL is "HEAT ROLL-OUT SAFETY SWITCH OPEN". The heater is equipped with a cutoff device to prevent flame roll-out in the event the heat exchanger becomes blocked. This is either a "manual reset", or "Single-use" type fusible link/thermal fuse, that must be replaced or reset after any over temperature conditions have been fixed. Excessive restriction in the heat exchanger flue passage may cause the switch to disable the heater. I don't know your exact model so I'm just generalizing. If you reset or replace the switch, and it trips/burns out again, then you need to address what is causing it. make sure the heater is cleaned out well and no debris is blocking the flue. I fthis doesn't help you can always try calling Raypak Service department at (805) 278-5300.

Sep 20, 2010 | Rheem 266K to 399K BTU Swimming Pool...

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ROL Fault code


replace fusible link and check gas pressure and for burners clogged

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