Low water flow is making the heater knock, (PULSATE) clean filter or backwash, check pump and skimmer baskets and empty. if still low flow and knocking, check impeller on pool pump to make sure it isnt clogged.
Had this heater on my pool, after 7 months of use it failed, we rent the house out, no help from Hayword representive, So put different brand heater in for the pool because we needed a heated pool for the customers, find out heater was leaking, I was told the main problem is poor flow through heater due to a baffle, this causes over heating and leaks etc. Neighbor had same problem, they did give him a different heat exchanger, which did solve his problem, people had told him about this defect and they did have some small problem with this issue.
Thank
you for posting your question here on Fixya.com.
The
Hayward H100 has a diverter plate welded into the header that helps direct some
of the water flowing thru into the heat exchanger to heat the water. If the
weld fails the diverter can interfere with that flow and cause overheating or
poor flow thru the heater which in turn can lead to the problems you describe.
Remove
the inlet side hose once you have blocked the flow of water from the pool and
you should see the diverter in the inlet. If you can move it then it is broken
and needs to be fixed back in place or the whole heat exchanger needs to be
replaced.
If
the diverter is not moving then your issue is likely an overall water flow one
and the next place to look is the filter. Poor overall system flow may be
enough to close the pressure switch telling the heater the pump is on but not
enough to keep the water in the exchanger from getting too hot, again causing
the symptoms you describe.
If
this answer does not fix your problem, please comment with additional details
prior to rating the answer. You may also contact me thru our website at www.arrowpools.net. Positive feedback is appreciated
once your problem is solved!
John
577 views
Usually answered in minutes!
×