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When turn on pool pump there is a loud vibrating noise coming from the Heater flow valve

The loud humming noise gets louder at higher RPMs and it happens without the heater being on

Posted by Anonymous on

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Is it possible that the flow valve was put on backwards?

Posted on Nov 28, 2013

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Posted on Jan 02, 2017

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SOURCE: Pool heater will not turn on.

It means that there is no pressure in the pipes to indicate flow. Make sure that water is flowing, and if there is a bypass on the heater make sure valves are in the correct position to allow water to flow through the heater. If you are CERTAIN that water is flowing through the heater, and the LCD still says no flow, you probably have a faulty pressure switch inside the heater, which is the most common problem with pool heaters. To confirm you will need to remove the wires from the pressure switch and short them together with another piece of wire. If it still says no flow you may have a bad board, but 99.9999% of the time it is the pressure switch.

Posted on Apr 11, 2009

  • 4 Answers

SOURCE: hayward pool heater h series

the issue is a broken baffle in the system. there is a baffel that directs water into the heat exchanger and back out into the system. The welds that hold the baffel in place have broken off. It can be repaired if you take the unit to someone with a mig welder and have them re-weld it (muffler shop, mechanic?). there needs to be a weld on both sides. You can see the baffel if you remove the unit and look down the inlet and outlet tubes.

Posted on May 25, 2009

  • 1 Answer

SOURCE: low pressure reading on Pool Heater

I had this problem with ours last year. I replaced the water pressure switch and it began working fine. We later had a symptom that the blower would start but it would not ignite. The ignitor rod was corroded so I took it out and sanded it with some sandpaper---worked fine...until I dropped it trying to reinstall and it broke. Bought a new one and it works fine now.

Today's problem is related to the blower now.... it is always something, isn't it?!?

Posted on May 30, 2009

  • 366 Answers

SOURCE: triton minimax 400 pool heater won't ignite

Make sure the gas valve is set to on and thermostats are set properly. Check the pressure switch and high limits for continuity.Check wires for signs of damage, etc..

Posted on Sep 16, 2009

  • 5 Answers

SOURCE: heater making loud noises

I had this problem with mine ( hayward h series abg100 ): exhaust fan turned on, waited approx 15sec, gas turned on, ignition, flame lit (can verify in flame window below knob), stayed lit for ~5-10 seconds (varied), I heard popping, cracking, knocking, banging noises, then gas turned off.

I believe the reason it does this is the bypass/diverter plate in the exchanger (right at the inlet side) is loose; the weld broke loose. They weld this very poorly and is obviously a known issue with the unit. I think storing it outside in the winter doesnt help. Another reason for the noise could be not enough water going through the exchanger because of a problem with the diverter plate, therefore the exchange gets to hot and boils.

I believe the ignition board senses this somehow (not sure how though, only way I can think of is via the ignition sensor), and cuts off the gas. I managed to fix this by putting on a small stainless steel hose clamp around the thermostat forcing the divertor plate tight up against the top so the water flows through the 3 exchange pipes. This was a very difficult maneuver due to working inside the tight pipe, but it worked!

You can check if you have the same problem as me by taking off your hose input to the heater, and removing the outer 2 PVC reducer connectors. Then you'll have access and sight to the exchanger input (3" pipe?) and should see what I'm talking about. If the plate moves (or isn't tight) then you most likely have the same issue. if you have questions.

Posted on May 24, 2010

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2 Answers

High pressure, and heater noise

I am not sure if you have solved this issue, or not, but if the PSI on the gauge is high then the problem may not be the heater. When you have the system turned on, and the PSI is reading higher than normal, just the flow of water coming out your return lines. If the flow is normal, like when you clean your filter, then see if you have a way to re-route the water so it bypasses the heater. If the PSI on gauge drops, then the issue is in the heater.

If the flow of water is slower than normal, with the PSI reading high, then you have a blockage somewhere in the system. It could be something simple like removing debris from skimmer and pump backets, to time to backwash, or clean, the filter.

If the flow of water is really hard and fast, with the PSI high as well, then you have too much water going through the system and need to slow it down.

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good luck!

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Dec 19, 2006 | Honeywell HZ514 Baseboard Heater

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