Question about Hayward H Series Pool & Spa Heater 400k Btu Propane Gas Milivolt Ignition H400p1
The heater won't turn on and there is a flashing LO indicator with the service light lit!
LO usually indicates low water pressure. Check the pressure in your filter. You may need to backwash. If the filter is to clogged then the water pressure in the heater is so low that it won't activate the pressure switch. While checking the pressure turn the pump off and then on to make sure the pressure gauge is actually working. Also check the pressure coming out of the inlets into the pool. You should be able to tell if you have sufficient water pressure.
Posted on Jan 28, 2009
I changed the mimiset &thermostate&pilot&pressure switch
the heater working about 30days and stop after that .
-pls.what is the proplem.
Posted on Dec 19, 2012
Depending on your model- you may have to reset it after fixing it. I backwashed mine, had the same LO error code. I pushed "mode" through all the cycles (spa, pool, etc. then back to pool) and it started right up. (I hadn't noticed it but it told me to on the heater below where it told me the various error codes...referred to it as "lock out"). Saved a service call.
Posted on May 10, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jun 16, 2014 | Hayward H-series Electronic Gas Pool...
May 23, 2014 | Hayward H-series Electronic Gas Pool...
Sep 17, 2012 | Hayward H-series Electronic Gas Pool...
Aug 30, 2011 | Hayward H-series Electronic Gas Pool...
Jul 20, 2009 | Hayward H-series Electronic Gas Pool...
Jun 20, 2009 | Hayward H Series Pool & Spa Heater 400k...
Jun 20, 2009 | Hayward 250kbtu Ng Pool Heater - Inground
Jun 06, 2009 | Hayward H-series Electronic Gas Pool...
Jun 30, 2016 | Hayward H Series Pool & Spa Heater 400k...
2,012 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: