No one likes to get an error code on any piece of technology, especially on a Raypak heater. It means something is wrong and needs to be addressed soon. The panic really doesn’t set in until you realize error code BD1 means absolutely nothing to you. Error codes are both curses and blessings. Although an error message is never really a good thing, at least it’s an indication of what the problem is. Just imagine how much easier it would be to diagnose diseases if humans came with error codes.) Usually, depending upon the manufacturer, the manufacturer will include a manual detailing what may have triggered the error message and possible solutions to fix the issue. All error code guides are not made equal.
Still, even if the error codes were listed in the manual, what are the odds you know where that manual is? Unless you’re like my mom who keeps all her paperwork in a filing cabinet, the manual was probably tossed a week after your product was working properly. Heaters, though, can be rather tricky without the manual. I love the saying, “hindsight is 20/20,” because it’s so true. How many times did you wish you kept something after you have convinced yourself that you didn’t need it and threw it away? Or maybe it’s just me.
Our goal with this blog is to aid you in identifying and defining the error code on your Raypak heater and to provide possible solutions, as per the manufacturer. If we don’t have a solution or do not address your particular issue, it’s always best to contact Raypak directly.
The majority of Raypak heaters will have a digital readout. The digital readout helps pool owners read error codes on the actual heater. The models with digital thermostats are programmed to display a variety of status and diagnostic messages, depending on the operating conditions.
They are also equipped with onboard diagnostic controls. If there is a safety fault, a fault code will be displayed along with a service indication. (see pic on right) The word “SERVICE” will flash on and off if the PC board detects a known issue. The fault code is displayed in 3 big letters in the lower left of the display.
Below is a chart we created to help pool owners identify the meaning of Raypak’s fault code. It also includes possible solutions to fix the issue. Keep in mind, this is not a substitute for the installation and operation manual. Should you need further advice or technical information, please give Raypak a call at 805-278-5300.
| Fault Code Display | Definition | Possible Solutions |
|---|---|---|
| BD1 | Board failure | 1. If this code appears and stays on, turn off power to board at toggle switch and source, then re-establish power. 2. If code reappears, replace board as the main processor failed to start. |
| EEP | Indicates that memory failed to start on main processor. | 1. Turn off power at toggle switch and source, then re-establish power. 2. If code reappears, replace board as memory has failed. |
| FAN | Indicates the Pilot was lost, or the air pressure switch is not closed when required. | 1. Check for correct incoming power at fan relay- 120V or 240V and at fan motor. 2. If pilot is confirmed, check for 24V minimum out of fan relay to pressure switch. 3. If switch does not make when fan is operating, verify the tuning between fan housing and switch is connected and is not kinked. 4. Soft lock out after 3 attempts- automatically resets after 5 minutes. |
| FFL | Indicates a false flame signal. | 1. Check to see if pilot is staying lit after CFH is satisfied. If pilot stays lit, the pilot valve in the gas valve is hanging open. Replace gas valve. 2. If gas valve is working properly, problem lies with the pilot system or board. Turn power off at toggle switch. 3. Unplug ignition wire from board and pilot and remove green ground wire from burning tray. Clean and reconnect ground wire. 4. Turn power on. If no spark at ignition module, turn power off and replace the PC board. 4. If you saw a spark at Ignition Module, turn off the power and reconnect wires. 6. Turn power on and unit should fire. |
| GVC | No power detected at PV or MV when commanded. | 1. Turn power OFF and disconnect Ignition Wire and Gas Valve wires from board. 2. Power ON and watch for spark at module. 3. If no spark, turn power OFF, and replace board. 4. If spark is observed, turn off power and reconnect wires. The unit should fire. 5. If unit does not fire and code reappears, power OFF, disconnect valve wires from board and remove MV, PV, and ground wires. Clean and reconnect. 7. If unit does not fire, replace the gas valve. |
| GVO | Power found at either PV or MV at the incorrect time. | 1. Turn power OFF and disconnect Ignition Wire and Gas Valve wires from board. 2. Power ON and watch for spark at module. 3. If no spark, turn power OFF, and replace board. 4. If spark is observed, turn off power and reconnect wires. The unit should fire. 5. If unit does not fire and code reappears, power OFF, disconnect valve wires from board and remove MV, PV, and ground wires. Clean and reconnect. 7. If unit does not fire, replace the gas valve. 8. Low power to transformer can cause a GVO fault. |
| HL1 | The high-limit has exceeded 135F | 1. Possible excessive water temperature in the tube bundle. Once heater cools, high limits resets automatically. 2. Check for blockage in tubes. 3. Check for low water flow. 4. Check Unitherm governor- replace if necessary 5. check bypass assembly- replace spring or bypass if necessary |
| HL2 | The high-limit has exceeded 135F | 1. Possible excessive water temperature in the tube bundle. Once heater cools, high limits resets automatically. 2. Check for blockage in tubes. 3. Check for low water flow. 4. Check Unitherm governor- replace if necessary 5. check bypass assembly- replace spring or bypass if necessary |
| IGN | Ignition failure | 1. If the unit fails to hold a flame after 3 attempts, it will go into a hard lockout. Interrupt the power supply to clear the lockout and check for air in the gas line or not enough gas pressure. 2. IGN only appears after pilot has proved and main valve has been powered. |
| ILO | Ignition lockout (Propane units only) | 1. The heater has performed too many attempts to ignite the main burner and will take a short break. 2. Inspect pilot assembly. 3. If pilot assembly is OK, then the culprit may be your PC board. |
| PRS | Low water pressure | 1. Check water levels at skimmer face. (should be middle of skimmer face) 2. Ensure pump is running. 3. Check filter pressure. Backwash if necessary. 4. Check heater location- if more than 5 ft above or below water level- adjust pressure switch. |
| ROL | Thermal fuse tripped inside heater due to excessive heat or flame roll-out detected. | 1. Possible downdraft of burner flame. If sensor has red reset button, press button & determine cause. 2. Does your unit need a high wind stack? 3. Check wiring for burns- especially the ground wire and wires at gas valve. 4. Replace wires if necessary. |
| SNS | Temperature sensor is out of acceptable range. | 1. Water temperature is below 36F or above 110F 2. If the two thermistors are more than 2 degrees apart, the SNS code will appear. 3. Loose or corroded connection at P1. 4. If the sensor is not mounted all the way into the JACO fitting on the header, it may give a false reading. |
Raypak heater turns on, when turning on the heater after winter it just sparks and doesn’t ignite…please advise.
Are there any error codes? Do you smell gas?
I have a customer with a raypak heater that has a code that says either water supply or water switch open. Is that a pressure switch problem? It hasbeen backwashed and put on recirculate to test unit.
Well, let’s start with basic info like what model heater your customer owns.
I have a LoNox Tab Fault in my Raypak P-R406A-EN-X. I already reset factory defaults and cleared fault codes, but error keeps reappearing. Low Nox Tab is not broken and I know the manual says that “If TAB is NOT broken and the board detects power at Lo NOx connector, Lo NOx Tab Fault is displayed and the heater will not operate”. Manual does not say how to fix this. How do I fix this/make sure board does not detect power?
The TAb code with a LowNox unit means you have to replace the main board.
I just installed a new pc board and have gotten this code upon startup
I am getting the same code (LoNox Tab Fault). Were you able to diagnose how to fix this issue?
Ignition failure Raypak 266,000 btu.
I hear clicking but no ignition, could this be a bad ignitor? Heater is 2013
Best guess: The burner near the ignitor might be clogged. If you hear the ignitor attempting to spark but there is no flame, there might not be enough gas or air to make for proper combustion. That is something you should have a professional come out and take a look at, for safety reasons.
Raypac heater P-R407A-en-G S/N 0707003973 error code PA6. What could be the problem
Hello Pooldok, are you sure that is the correct code and model number? I searched PA6 in a few manuals and come up with nothing. Also, the model number ending of “G” is not a usual number, it should be a “C.”
I get a Sw open default. The manual states it is a Water Pressure switch open.
Now what? Can’t find what to do about it in the manual.
Thanks!
The Raypak manual states this in its troubleshooting section: Pressure switch. Verify water flow and pressure CLEAN FILTER / STRAINER – backwash if neccessary
Make sure your pump is primed and your filter and baskets are clean.
I have a 266A with the same sw open code. I have done all you suggest and it will not clear the issue. What next?
Call a professional to come take a look at it. Or contact Raypak directly for some ideas.
R5350ti-E, what does F52 mean?
I found an R5350ti-E owner’s manual but it does not list the FS2 error code. It does show an FS error code that explains it is code for the heat pump’s defrost cycle. The fan will spin but the compressor is shut off.
What does “SPK” mean on my Raypak P-R405BL?
SPK is a status and not a fault code for “Spark” on the Raypak PR405BL. The code only notes that the heater is attempting to spark for ignition and does not denote an error has occurred.
I have the same model PR405BL and same message…When I flip the switch it reads RV 0, then CFH, then SPK as well as showing a pic of the flame and the spa temp that I set it to. (104) It clicks once and that’s it. I don’t smell any gas and nothing else happens.
I cleaned out everything on the heater as well as backwashed and cleaned the filter.
Any suggestions on why it won’t start and how to fix this issue?
what does F52 mean?
What is the model number of your Raypak heater?
I got the same code, muheater is R5350ti-E
I have PRS code clean filter heater won’t start. I already backwash filter, pressure now normal but heater still won’t start showing the same error
George, you should have a technician come take a look at the heater. Or at the very least call the manufacturer.
Pressure Switch. Filter is clean that’s good. Pressure Switch is at fault.
Call a technician. After replacement new switch must be adjusted precisely.
I have a Raypac model8350 led reading LP , heater was working fine had tech by to check my pool temp sensor going to my pentair touch unit he told my wife sensor was fine even though it was reading 104 degrees in the pool that was actually 88 . Said one of the wires in touch unit was rusty and cleaned it and the temp then read 63 10 minutes after he left heater stopped giving heated water , 4 hrs later got the codeLP
According to Raypak’s manual the LP & LP3 error code means the following: “Shortage of refrigerant gas in the unit or faulty low-pressure control. The unit will show (LP3) after 3 LP faults and shuts down the unit and pool pump for protection. If this occurs, you should call for service.”
I have a Rheem M366A that is displaying, Flame w/o CFH. I just finished rebuilding the burner box and replaced some burner tubes. The heater has worked fine for a month and now shows this on the display.
According to Raypak, it could be a bad board/control module. And in very rare instances, it could be that the gas valve is being over-pressured keeping the pilot light lit when it shouldn’t be.
I have a raypak p-r266a-en-c ever since I replaced the pilot assembly after I turn it on it sparks then pilot lights then CFH the burners all light with strong blue flame then quickly shuts off. It then repeats this cycle for unto 60 minutes before the burners stay lit. do you thinks I got a bad pilot assembly or is there another sensor that is keeping the burners from staying lit.
CFH is supposed to display before a normal ignition cycle. Are there any other codes that flash before the heater shuts down?
Hi. I have a raypak p-r406a-ep-c propane heater. It is flashing CFH. I turned off the power for 90 seconds and restarted. It will try to spark (spk) but nothing happens. Then goes back to CFH. Thanks for any help.
Is your heater hooked up to an automated control or remote system?
My unit is saying high limit 2 fault. What does that mean?
Heather, it is in the blog, the code HL2.
mi calentador no es digital es modelo p-d106a-ap-c, el probema con el es que no calienta como al principio solo deja el agua a baja temperatura, cual es el problema ,revise el interior y no tiene oyin que lo sofoque
Model # P-R265-BL-EN
ROL code shows on my Raypak heater as well as service is blinking, what do need I to do? and how to fix it
ROL code shows on my heater as well as service is blinking, what o need to do?
This is actually mentioned in the blog:
ROL – Thermal fuse tripped inside heater due to excessive heat or flame roll-out detected.
1. Possible downdraft of burner flame. If sensor has red reset button, press button & determine cause.
2. Does your unit need a high wind stack?
3. Check wiring for burns- especially the ground wire and wires at gas valve.
4. Replace wires if necessary.
Where is the thermal fuse and the red reset button? thanks
My heater model no is P-R336A-EN-C, the digital panel shows “SENSOR FAILURE” what’s wrong?
I’m going to go ahead and take a wild guess the issue is stemming from a failed sensor. haha
But to be more specific it is likely a water temperature sensor problem, it is reading the water temp either above 110 degrees F or below 36 degrees F. Usually, the sensor failure error code is SNS. the temp sensor for that unit is part number 009577F.
I’m not getting any codes, but heater runs for only 30 seconds or so, then quits and starts right back up and repeats. Showed up about the same time as a leak appeared. Related? Any ideas? Thanks.
There could be a low water flow issue causing the heater to shut off to protect itself. Or the heater may need to be cleaned, ash and soot can build up in the burner tray suffocating the heater.
My heater is reading CFH…this is not in the code definition
What is the model number of your heater? Also, what year was it installed?
My heater is a model 406a and also has the code CFH
CFH is a normal code, which stands for “Call For Heat.” The CFH should display right before the SPK (spark) code displays, which means the heater is attempting to ignite.
What can you do if it still states Flame w/o cfh? How do you fix it
So is the CFH not flashing on the screen? Are you not hearing to pop ignitor? What exactly is happening?
what if it keeps clicking to ignite ? I have a a266 model
That is Call For Heat, heater is starting flame rectification process and is in the way to achieve temperature set point indicated – Ricardo Gonzalez – Raypak Training Mgr – Domestic and International
Hi Ricardo –
First time here…I have a Pentair Easy Touch with a Raypak heater (207A-407A). Everything on the automation end seems to be working. When the set point for the pool or spa is higher than the current water temperature, the LED on the heater turns on as if it is getting ready to fire up. But in both cases, it says “Remote No Demand”. If I take the heater out of remote mode into pool or spa mode, I can get the heater to work every time. Any ideas why is won’t turn on using Pentair Automation?
Svc tech here in buffalo, ny. Pr130enc has valve does not open. How do I test?
Are any lights that are blinking on the Ignition control box? You could try testing for voltage at the gas valve when the igniter is sparking. It should be sparking for five or six seconds.
call for heat, pool water temp drops 1-2 degree below setpoint, unit will ignite
National/International Tech Trainer Raypak
Is this easy to change mine just came on to or is this a tech. job if so how long should it take them to change it ?
I suggest hiring a licensed heater technician to complete any work because heaters can be very dangerous if not properly serviced.
I have a SNScode on my Raypak 266A heater. But no ‘service’ code showing. please advise
Lisa,
Charlie covers that in the last portion, it is likely a bad temperature sensor; the sensor is reading it is out of an acceptable range for the heater to operate. Temperature Sensor, IID Units – 009577F
Recommendations for a fix:
1. Water temperature is below 36F or above 110F
2. If the two thermistors are more than 2 degrees apart, the SNS code will appear.
3. Loose or corroded connection at P1.
4. If the sensor is not mounted all the way into the JACO fitting on the header, it may give a false reading.
I have a 266A with a “sensor failure” error code. Where are the thermistors located? Are they the same as the hi limit sensors? Is the “sensor” the Temperature Sensor? Are there 2 of them? The display panel does read the water temperature accurately.
You can get an idea of the location of the sensors from this parts listing: Raypak Atmospheric Digital Heaters 206A-406A (11/01/04-Current)
Trying to find out what code TA6 means on my pool heater
What is the model number of your heater? The answer of what the TAb code means can vary depending on the model.
is it possible to fix a raypak heater with a tube bundle?
Yes, but only if the tube bundle is the issue, to begin with.
P-R406A-EP-X
Giving a digital reading Water SW open and then shuts off can you diagnose and possibly give solutions to rectify situation thank you Debra Becker
Email: debralynnbecker@gmail.com
Cell:(631)942-4871
This is a copy and paste from a couple of other posts asking this same question in the comments below:
I have a fault code that says “Rollout SW Open”. Any thoughts
From the Raypkak manual:
That is the pressure switch. Backwash the filter throughly or clean the cartridges and try it again. It should fire, but may need the pressure switch replaced.
filter clean pressure switch replaced still getting a pressure code ?
Try to inspect your plumbing to see if you actually are suffering from low water pressure. How to Correct Low Water Pressure in Your Pool System
Outside of that, I would see if a Raypak tech can inspect the heater.
I just replace my roll out switch now my heater is working but there is no enough fire to heat tje water.look like it’s in pilot because tje flame is too small
Pu output failure??
I believe that is a PV output error and not a PU code. The PV is referring to the Pilot Gas valve, and that code means: “Pilot gas valve output is not in commanded state.”
The PV code is mentioned a couple times in the article and is usually associated with another code. I would check that the command module is receiving power and operating correctly, then you can move onto the valve for troubleshooting. This can be a little tricky, so I suggest having a tech do the work if you have not worked with gas and electricity before.
I have a “Rollout SU Open” message. Any clues?
Easy part to replace! Buy on Inyo – Raypak Thermal Fuse – 005899F
There is no “Rollout Su Open” code that I could find.