Hayward H150 Heater - Clicking/Popping Sounds

[neeber34]

Hey everyone, first post here, hoping for some help with a new issue.

The heater is 2 years old. I just got the pool opened and everything was working fine.

I started the heater, and it fired up as normal, ran all day without issue.

By later last evening, it was making a weird clicking/popping/banging noise. It starts about 40-60 seconds after the heater fires.

No issues igniting or starting. It does still produce heat, but I shut it down after hearing the noise.

I have checked all my lines, water flow is good and not restricted at all.

I've made a video of the sound also, not sure if that will work here?

The pool company who did my install told me to call a gas fitter. I would like to see if there's something I can fix first.

Thanks in advance!


Andrew

 

[ajw22]

Welcome to TFP

The popping and banging in the heater is the water boiling in the heater because the water flow is too low.

If you have a VS pump then increase the pump speed.

Clean your filter. What was your clean filter PSI on opening and what is it now?

Your filter may be clogging from algae. Do a Overnight Chlorine Loss Test and if you fail then the SLAM Process

Pool Care Basics Archives

Your one-stop shop for all things TFP to include: ABCs of Water Chemistry, Recommended Chemicals/Levels, Test Kits, Troubleshooting, and much more!

www.troublefreepool.com

Algae Archives

www.troublefreepool.com

 

[neeber34]

Welcome to TFP

The popping and banging in the heater is the water boiling in the heater because the water flow is too low.

If you have a VS pump then increase the pump speed.

Clean your filter. What was your clean filter PSI on opening and what is it now?

Your filter may be clogging from algae. Do a Overnight Chlorine Loss Test and if you fail then the SLAM Process

Pool Care Basics Archives

Your one-stop shop for all things TFP to include: ABCs of Water Chemistry, Recommended Chemicals/Levels, Test Kits, Troubleshooting, and much more!

www.troublefreepool.com

Algae Archives

www.troublefreepool.com

The pump is single speed. I believe it's a 1HP - the flow out the jet is very strong.

When you say clean the filter, do you mean my sand filter? or is there a filter in the heater that needs cleaning?

 

[ajw22]

When you say clean the filter, do you mean my sand filter? or is there a filter in the heater that needs cleaning?

Sand filter - Sand Filter Use and Care - Further Reading

 

[neeber34]

Sand filter - Sand Filter Use and Care - Further Reading

Thanks, I will give that a try.

Doubtful algae - it's a brand new liner as of Thursday and freshly filled with new water.

I will go do a good backwash and try the heater again and report back.

 

[ajw22]

Check and test the thermal regulator.

The thermal regulator and internal bypass valve control the internal water flow in the heater.

Read Pentair MasterTemp Heaters - Further Reading

 

[neeber34]

Thanks, I will give that a try.

Doubtful algae - it's a brand new liner as of Thursday and freshly filled with new water.

I will go do a good backwash and try the heater again and report back.

Just did a good long backwash and rinse. Turned on the heater and within a minute, same issue with the clicking.

 

[ajw22]

See post #6.

Test the thermal regulator. Put it in hot water and it should open at 120F.

 

[neeber34]

Just to make sure I'm looking at the right spot - should be that middle cap right? about an inch diameter?

I removed that, and there is nothing in there. I felt around as far as I could reach my finger in, and nothing.

 

[ajw22]

Sorry I sent you on a wild goose chase. I got you confused with another heater problem that was a Pentair and you are Hayward.

Your bypass valve is on the end cap of the header that unscrews.

 

[ajw22]

 

[neeber34]

...

 

[neeber34]

View attachment 574332View attachment 574333

I've got the part on order, but can't for the life of me get the the old one out to look at it and see if it's got some build up or scale that needs to be removed.

Am I missing something obvious to get it out?

 

[ajw22]

From what I have read you may have to pull hard to get it out.

Maybe @1poolman1 @wireform @Lake Placid has pro tips.

 

[neeber34]

Ok, got the bypass service cartridge replaced.

Still having the same issue.

Any other ideas?

 

[ajw22]

I still think you have a low water flow problem causing this but you say it is good.

If not the water flow then the heater needs to be opened and the heat exchanger examined for why the heat is not transferring to the water.

 

[neeber34]

I still think you have a low water flow problem causing this but you say it is good.

If not the water flow then the heater needs to be opened and the heat exchanger examined for why the heat is not transferring to the water.

How can I test my flow?

I have strong flow at the jet and suction at the skimmer.

I did a long backwash and rinse.

What else can I do to confirm if it's a flow issue?

 

[ajw22]

Do you have a check valve around your heater where you can install a Flowvis?

FlowVis flow meter — H2Flow Controls

FlowVis flow meters are a revolution in reliable flow measurement. With unrivaled average accuracy, greater installation flexibility, and more NSF 50 certified models than any other brand, it’s easy to see why FlowVis® is a brand of flow meter you can put your trust in.

www.h2flow.net

 

[neeber34]

Do you have a check valve around your heater where you can install a Flowvis?

FlowVis flow meter — H2Flow Controls

FlowVis flow meters are a revolution in reliable flow measurement. With unrivaled average accuracy, greater installation flexibility, and more NSF 50 certified models than any other brand, it’s easy to see why FlowVis® is a brand of flow meter you can put your trust in.

www.h2flow.net

This is the check valve between the heater and chlorinator.

 

[ajw22]

Post pics of your equipment pad.

That pic shows flex hose. Flex hose can collapse internally or kink and cause flow issues.

It would be interesting putting a FlowVis on that valve and seeing what flow rate is coming out of the heater.