Question about Hayward H Series Pool & Spa Heater 200k Btu Propane Gas Milivolt Ignition H200p1

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Heater comes on, then shut off after a few seconds I cleaned the filter pressure is find unit is about 8yr old

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I read this blog a customer on Amazon.com wrote. He had the same problem twice:
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Unfortunately for me the unit had broken twice since May 08,
The first time it wouldn't fire up then shut off.
It took weeks to get a diagnosis.
Pool guy said he diagnosed it as an igniter & ordered parts & the parts never showed. After 4 more weeks of not having a heater I called a warranty center and the factory repairman came out. The guy literally replaced 5-6 different components costing upwards of 100 dollars each- over the course of half a day looking for the magic combo that would make it work.

The broken part was the very last thing that could have broken - the gas block. Im still trying to figure out what could even go wrong with a solid looking block of metal.

Access to the inside is a breeze and thats a good thing. Each panel has basically 4 bolts holding the panel on. It is easy to get to the components, and the system has onboard diagnostics but its hard to actually nail down problems as the on board diagnostics dont seem to be able to pinpoint issues really well as each problem required multiple investigations.

A month ago it started firing up and clicking off. Another multi- diagnostic problem. My pool guys diagnosed an igniter - again.
Another factory guy came out and traced the problem to a stuck internal thermostat. After replacing the internal t-stat the service guy traced its sticking to the water chemistry being "off" and showed me a corroded t-stat.

My chlorinator handles chlorine and I measure Ph weekly- if this is true one can NEVER let chemistry be off for any amount of time? That just isnt how pools work, all chemistry is a bounce bewteen a few point on each end measurement. - Or does this thing have a run of bad parts?

So Im building a love hate relationship with this part - (like the Miele blue moon vaccum in another review) I love it when it runs, but it doesn't seem to run reliably.
***************************************************************
The unit also has a gas shut-off valve that operates when the flame goes out, so the thermocouple (flame sensor) could be malfunctioning.

Posted on Jul 03, 2010

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