20 Most Recent Hayward Industrial Products H400FDN Hayward H Series Gas Pool Heater 400k BTU Electronic, Natural Questions & Answers

make sure wiring is correct especially if wired 120 volt read instructions inside panel

I am not sure they are available to non Hitachi service centres. https://documentation.hitachiaircon.com/glb/en/pac/rua-at3s

Cannot find the fault code . There are vidoes on u tube saying how to reset thr code By pressing the reset button . If this does not work youcan ccontact vaillent on there web page . I have a mate who works for them i will ask him as well

Do I need to insulate this heater out in the shed? Freezing temperatures

Call a engineer

The P8 fault can mean many things when it pops up on your Mitsubishi Electric wall controller. The P8 fault is activated when the indoor coil sensor does not change the temperature for a set amount of time after the compressor is (or should be) switched on.

Where does the tube sensor go

This one looks the same.https://www.ebay.ca/itm/133397559348They are made by Harper Wyman and using that model number, this is the result.https://www.google.com/search?q=Atwood+RV+oven+control+valve+57294But this shows more that looks similarhttps://www.google.com/search?q=Harper+Wyman+oven+control+valveAnd then if we go here and Zoom in, you will see MTZ 22300https://youngfartsrvparts.ca/products/used-atwood-wedgewood-oven-thermostat-57294Which leads us here and the Specs Sheet.https://www.copreci.com/en/gas-cooking/product-range/thermostats/with-safety-and-thermostatic-flow-regulation/372-mtz-22300-seriesand from there to here, and Parts Town stocks them!List Price: $ 318.24https://www.partstown.com/fagor-commercial/fgrc12008712..

call plumber to replace gas valve, it may cheaper replace water heater. gas valve is not DIY

test for sticking relay faulty circuit board or faulty stat

Beware when working with electrical equipment. It may cause electric shock. Check the power supply wires, connections with heating coils. If they are ok then possibly heating coils require replacement.

I would try their website; www.statewaterheaters.com They should show a list of their service agents.

You have to fix the root cause before you reset it. https://www.google.com/search?q=Clearflow+Bestway+Pool+Heater.+It+has+an+E6+error+code ..

Domestic Central Heating, Dodge Caravan, well pump or a Pool Heater, or something else. All questions need 'make model (what it is)' as first 3 words. With the exception of the Dodge Caravan, pumps have a small bleed screw. Google make model bleed pump or if it is an above ground well pump make model prime pump This is heavily weighted towards vehicles, but you will get the ideal of the power of Google! https://www.google.com/search?q=%E2%80%8Bmake+model+bleed+water+pump ..

Call for Service. The timer is fine, the boiler has failed. I presume it is gas fired, which means that only gas registered service techs can work on it.

Energy smart water heater has start up failure problem so how to resolve

Check the thermocouple and the control box.