Question about Raypak 406A Digital ASME Natural Gas IID Heater009271

1 Answer

What does the error code RVO stand for?

The unit is saying "RVO", then "CFH" and that the pool filter needs to be cleaned. Is there a water flow switch problem?

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  • Raypak Master
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If new heater check wiring

Posted on Jan 09, 2018

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 128 Answers

SOURCE: says clean filter strainer

Could be the pressure switch on the heater. Jump switch. If heater fires the switch is bad

Posted on Aug 23, 2009

john224
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SOURCE: I have a Raypack RP2100. The heater will not turn

What is the pressure gauge reading and what is the pump horsepower?

Posted on Dec 29, 2009

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SOURCE: What does CFH mean on your pool heater and how do you fix it?

CFH is call for heat and the flame is about to come up. The banging you hear is the water inside the heater overheating to a boil. What you have is a water flow problem. If you have a valve bridging the water into the heater and the water going out be sure this valve is 80-90% closed so it forces water through the heater. If not you may have a problem inside the water manifold on the side of the heater. Their is a water by pass disc inside the header if stuck open will cause the same problem. Also check your baskets and filter to be sure they are clean.

Posted on May 07, 2010

  • 44 Answers

SOURCE: I have a five year

CFH means "Call For Heat", and SPK is "Spark". It sounds like you are running out of gas.Propane tanks need to have 30% in the tank for a heater to run correctly,and after they are filled you must bleed the air out of the line.If you have Natural gas,the gas line may be too small to supply enough gas to keep it running. NOTE...gas pressure MUST be checked with the heater running.

Posted on Sep 28, 2010

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My ultraheatpump starts for 3 seconds them shuts down, say low water flow alarm... Pool clean , filter clean.. Good pressure ,good flow to pool


check flame sensor or heater element and pressure switch possible loose wire or transformer low voltage

Dec 30, 2017 | Pool & Spa

1 Answer

Why do I get CFH but then no SPK?


CFH = Call For Heat
SPK = Ignitor is Sparking - attempting to ignite raw fuel

In a lot of cases, Pressure Switch opens up, CFH , is cancelled and therefor no ignition sequence.
try cleaning filter really good. If cartridge, may be time for an overnight soak.

May 21, 2015 | Raypak RP2100 DIGITAL POOL HEATER R265

2 Answers

Spa indicator says Water SW Open...what does that mean and how do I fix?


This means that the pressure switch is not closing. Generally, this is a lack of water flow issue. The main cause is a dirty filter. Clean cartridges, backwash sand, backwash and recharge DE, whatever is needed to clean the filter, this should fix the problem. If not check other sources of restricted flow: filter baskets, pump baskets, shut-off valves. If everything is clear and there is good flow returning to the pool it could be a bad pressure switch. Replace with the correct switch for your heater.

Sep 13, 2014 | Rheem Pool & Spa

1 Answer

Low flow message on balboa 500z system


The low flow message on any Balboa means that you are having an issue with the flow of water through your heating unit. This can be caused by a few things.

  • Low water levels
  • Dirty filters
  • Something is impeding your water flow
Top up your water level and make sure it is where it needs to be, clean your filters or replace them, and check that nothing is impeding your water flow at the skimmer or water intakes.

Here is a link to water flow issues.
F2 Error Code Trouble Shooting

Dec 24, 2013 | Intex 2500 Gal Easy Set Swimming Pool...

1 Answer

Error code cfh


cfh is not an error code. it stands for "call for heat". back wash the pool filter. check continuity of pressure switch to ensure it is closing at proper pressure. jump pressure switch and if heater fires, there lies your problem

May 03, 2013 | Raypak Pool & Spa

1 Answer

Raypac 2100 rvo error code


check high limits or fusible link if quit while running could have overheated

Aug 02, 2012 | Raypak Rp2100 Pool & Spa Heater Lonox 407k...

1 Answer

I received a notice that the filter needs cleaning. How do I do that?


THis is a PRS code (clean filter/strainer) correct?
This simply means that either there is no water flowing through the pool heater (possibly due to a dirty filter)
If you know you have good water flow, then your pressure switch has failed. Replace the pressure switch.

May 31, 2011 | Rheem M406A 399K BTU Cupro Nickel Pool or...

1 Answer

I have model # p-m267a-nc-c it comes on I git error cfh then after a while i git hl2 and it wont heat after that. HELP Please TKS


"CFH" is Call for heat. That means your heater is trying to fire (not an error code). "HL2" is an error code which stands for "High limit #2". This error means the water in the heat exchanger is too hot,and the heater shuts itself down to prevent damage. Most common causes are poor water flow .Make sure the correct pump is running,and you have at least 10psi on the filter gauge. also be sure that the bypass valve is at least 1/2 way closed.The Bypass valve is located on the return line after the filter just passed the first tee.

Oct 12, 2010 | Rheem 266K to 399K BTU Swimming Pool...

3 Answers

It says low flow, how can i fix it. its a Intex Automatic Salt Water System for Above Ground Saltwater Pool


After five years of using our pool each summer, we assembled it last week and I kept getting the "low flow" warning (with irritating beeping) even though the water flow was very good. I disassembled the unit and checked the flow switch, and found that the switch itself was the culprit. Here's what I did: (this is probably not recommended by Intex...) I unscrewed the main portion of the salt water purifier (the part with the digital display on top) from the base and lifted it up to expose the circuit board and wiring. All the fuses were intact and everything looked good. At the bottom of the circuit board, about an inch from the right edge is where I found the connections for the flow sensor. One was marked "flow" and the other was "grnd". I removed the plugs that run to the slow switch, closed the circuit by making a direct connection between the two plugs, and voila! No problem. I ended up cutting the wires about 1-1/2 inch from the plugs and connecting them with a wire nut, then I plugged them back in. The unit is working perfectly again.

If you attempt this, make sure the unit is unplugged and be careful when dealing with the circuit board. Don't be intimidated, it's not a high-voltage connection you are working with, you are simply closing the circuit and telling the board that the switch is closed as it would be with adequate water flow. I was comfortable making this "modification" and bypassing the flow sensor because we have several years of experience with our pool and because I clean and swap out our pump filter every day during summer, and because we know the difference between strong and weak flow just by checking the inlet and outlet ports in the pool.

I hope this helps someone! It took care of my problem. Best of luck.

Jul 23, 2010 | Intex Automatic Salt Water System for ...

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