Question about Hayward H-series Electronic Gas Pool Heater H400
With pimps on heater in Bo mode but will not fire. Gas on.
BO = "By-Passed Operation"
This will show, when ever the heater is programmed, or wired, into an automation system. It means that the automation system has control of the heater, this was done by either programming, flipping a dip switch, or via a logic jumper. All depending on model of heater.
Posted on May 25, 2015
Make sure you have adequate gas pressure
Posted on May 26, 2014
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Posted on Jan 02, 2017
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
BO means that you have bypassed operations. ie automation. if no automation is present then press and hold the Down arrow and Mode button for 3 seconds.
Posted on Aug 23, 2009
AO will apply to your blower, blower tubing, or blower vacuum switch. You need to check these items.
Posted on May 20, 2010
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