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Hi My raypak heater is saying rol service what does this mean? I'm having guests over tonight and need the hotub working.

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You haven't indicated what model number heater you have. .
Low NOx heaters are equipped with a thermal cut-off
device to prevent flame roll-out in the event the heat
exchanger becomes blocked. It is a "manual reset"
type roll-out switch that must be reset by a service
technician after any over-temperature conditions have
been fixed. Excessive restriction in the heat exchanger
flue passage may cause the switch to disable the heater. Some models have a one time "fuse type" switch, that once opened has to be replaced. You can go to for a manual if you don't have one.

Posted on Jul 13, 2010


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1 Answer

What does error code ROL with "service" flashing mean?

ROL is a failure code for Roll Out Fuse. This is the ceramic tear drip shaped piece in the lower left side of the cabinet. There are a few reasons this may have tripped but it is almost never a failed part but rather a symptom of a larger problem. The possibilities in likely order are as follows;
1. Sooted heat exchanger from a lack of adequate fresh air or gas supply.
2. Spider web blocking one of last gas orifaces.
3. Down draft through heater (indoor application could be improper venting).
4. Bad wire or connection between fuse and pc board.

Jun 02, 2014 | Raypak Rp2100 Pool & Spa Heater Lonox 407k...

1 Answer

ROL keep displaying on my raypak rp 2100

check gas pressure if too low it will overheat replace rollout fusible link if it happens again you might need a vent stack

Jun 23, 2012 | Raypak Rp2100 Pool & Spa Heater Lonox 407k...

1 Answer

I am getting a ROL code on my raypak 406 gas pool heater. Does anyone know what this means?

roll out senor bad replace but check gas pressure if too low it will overheat once gas is ok then replace fusible link and clean outside of het exchange

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1 Answer

Pool heater will not turn on...displays ...SERVICE AND ROL

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

Feb 24, 2011 | Raypak SpaPak Spa & Hot Tub Electric ...

1 Answer

I have raypak pool heater with services code ROL how I troublesho

roll out fuse is open. for starters you have to replace that safety. then find out what caused the over temp situation. clogged venting or heat exchanger, negative down drafts, inadequate combustion/ventilation air, improper air/gas mixtures

Jul 25, 2010 | Raypak 130,000 BTU Propane Gas Pool...

1 Answer

Raypak heater. fault cde says (ROL)

Thank you for posting your question here on

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!


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1 Answer

Service code ROL raypak pool heaters p-r-266a-en-c

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.

May 29, 2010 | Raypak 130,000 BTU Propane Gas Pool...

2 Answers

Raypak 2100 digital heater give fault code eol

ILO or ROL. There is no EOL.

ROL is a switch inside the lower left corner of the heater. Press the red button. ILO is a lockout. Power down and power up.

Nov 22, 2008 | Raypak Pool & Spa

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