Question about Hayward 250 1 Millivolt Propane Pool Heater 250000 BTU
The LO keeps flashing.
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Posted on Jan 02, 2017
SOURCE: Error code LO
Is the heater installed indoors?? if so you'll need a vent pressure orifice kit.
if not check your water press. (below 18 PSI on filter) Place filter on "recir" if it fires and stays on . it's the pressure.
check to see if all connections a set tight hi-ltd switch wire harness etc.
Posted on Jun 07, 2009
lo usually indicates insufficient water flow and/or pressure switch malfunction.make sure filter is clean and pressure is in normal range
Posted on Jun 21, 2009
One of your limits is not working or not wired up. An easy way to check the limits - Water pressure switch, Hi limits, air pressure switch all of which have 2 wires going to them. Unplug one item and connect the 2 wires together ( paper clip works fine ) Then retest, if problem does not go away remove paper clip and reconnect wires and move to the next limit. The limits are located in the black plastic header. Always make sure water is flowing through the heater at all times while checking the limits.
Posted on Mar 01, 2010
Low Flow errors are not necessarily real. They can be caused by improper adjustment or a defect of the pressure switch. Locate the pressure switch. Verify that the "switch" makes contact. Adjust the dial, reducing the distance the switch has to travel to engage. This will effectively lower the operating pressure required to operate. Keep adjusting until the unit stays on.
Posted on Apr 23, 2010
SOURCE: Main pool pump failed and
LO code is for a fault at 1 or more of 4 switches. water temp, pressure limiter, ect. It is recommended that you contact a pool professional to deal with something like this. If you are in the Phoenix Metro area you can contact me at firstname.lastname@example.org
Posted on Dec 29, 2010
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