Question about Hayward 400FDP Universal Series Low Nox Propane Heater 400000 BTU ()

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I have a pf error on my hayward 400 fdn 2 yr old heater. also it's wired 240 volt ac

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  • Hayward Master
  • 1,378 Answers

Thank you for posting your question here on Fixya.com.


A 'PF' error code for a Hayward heater is an electrical supply wiring error. This code will display if 120V polarity is reversed, low voltage is detected, or if the ground path is not sufficient. Reset is immediate after error is corrected. If you are feeding it 240 it can mean one of the 120 legs is low or open or the grounding is bad. It could even be an issue with the transformer or the control board but it is far more likely an electrical supply problem. Start with measuring the incoming line voltage with a good meter. You should see 240 line-to-line and 120 line-to-ground on each leg. If the reading is off by 10% or more there is an issue to correct. If not check the ground next.


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

Posted on Mar 30, 2011

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I have a new heater with diferant terminals from the old one so not sure how to atach the wires


There is no need to rewire the internal of the heater!
Just bring in the electrical supply to the heater, it can be either 120 or 240 volts.
If the heater you have is like the picture associated with your post, then all then have to do is change the supplied plug from 240 to 120. It comes pre set for 240. That plug is inside the cabinet.

If any other brand, then you need to change the wires at the transformer of the heater. All heaters need to be supplied with primary voltage: 120 or 240. Then the control system is supplied with secondary voltage out of the transformer. The secondary voltage is no more than 28 volts. and these wires are normally colored as blue or yellow.

Secondary power is already wired within the heater. NO need to change where they are. You will only need to deal with the Primary wiring.

There are many varieties of transformers that transform high primary voltage to a low secondary voltage of 28 volts. and these transformers have many wires: primary & secondary.
I will try to make this easy to understand.

If you have a Gas Heater Transformer with these colors:
  • Red
  • Black
  • White
  • Green
Or...
  • Red
  • White with Red Stripe
  • Black
  • White with Black Stripe
  • Green
These are Dual Voltage Transformers, you can bring in either 120 Volts or 240 Volts

If you bring in only 120 Volts...
1st example:
The Red wire will not be used! Hot wire to the Black, and the Neutral/Common, to the white wire. Green to ground.

2nd example:
Connect the Red wire with the White with Red Stripe together and connect these to the incoming Neutral/Common wire, normally White.
Connect the Black Wire with the White with Black Stripe to your incoming Hot Wire, which is normally Black.
Green to ground

If you bring in 240 Volts...
1st example.
1 Hot wire to the Red, the Other Hot wire to the Black, and White wire is not used. Green to ground

2nd Example:
Wire nut the two Striped wires together. then one incoming Hot wire to the Black, the other incoming Hot wire to Red.
Green to ground

Or This is only a Low voltage - 120 Volts Only
  • Black
  • White
  • Green
Or either any of these combinations...
  • 2 Blacks w/Green
  • 2 Reds w/Green
  • 1 Black, 1 Red w/green
This type will only be a high voltage, 240 volts only
Picture below is what a transformer looks like and it is where your incoming supply wires go. The smaller leads with the spade connections will go to a specific location & is the 'Secondary" .

Good Luck



25568369-di2jpn2pb5nzkrgf0hzbmyq5-3-0.jpg

Mar 14, 2015 | Pool & Spa

1 Answer

Can I change out a Hayward H400ID with an electric heater for the spa only? If so what electric heater product brand would you recommned. Raypak?


Hayward has manuals for each type heater, gas and electric.
http://www.hayward-pool.com/prd/In-Ground-Pool-Manuals_10201_10551_14502_-1___I.htm
Hayward also has contact page, and can probably recommend correct change-over product.

You want to switch from propane to heat-pump type.

There are likely 3 areas of difference. Read each manual and generally look for 1) unit size and capability to match spa 2) pipe connections and sizes 3) Electrical requirement

From electrical standpoint, You need GFCI-protected line from circuit breaker box, or GFCI (arc-fault) breaker. This will prevent electrocution risk around spa.
http://waterheatertimer.org/How-to-wire-GFCI.html

Wire sizes are based on volts and watt-rating of heater.
Each electrical device has rating plate showing volts and watts.
3500 watts divided by 240 volts = 14.5 amps so install double-pole 20 amp breaker and use 12 gauge wire.
1500 watts divided by 120 volts = 12.5 amps so install sinle-pole 20 amp breaker and 12 gauge wire.
http://waterheatertimer.org/Color-codewire.html

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check pressure switch if voltage both sides ok if not bad switch or clogged copper tube also check filters

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You didn't indicate your exact model. There are different versions of the H200 series. If it is milivolt then there is no electric, Must have correct milli-volt pilot generator. If it's electronic, check the air flow pressure switch on the combustion air.

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Pool heater thermostat lights up but water do not get hot, need wiring diagram.model#C-SPA XI 11,240 volts 5.5kw or 240 volts 11kw


There should be a large, easy to read diagram under the cover once you remove it from the heater. Is the one under your missing or unreadable? Hayward doesn't publish one on their tech website or residential documents page so I have an email into our tech support contact asking for one in case yours is missing. If you find it under the cover please add a comment to that effect. FIXYA website has not been letting me post pictures lately so getting you the info may be a little difficult.

Dec 29, 2009 | Hayward Comfort Zone Electric Spa Heater...

1 Answer

Replacing old with new


Are the heaters rated at the same voltage, if so just connect the white to one heater wires and the black to the other heater wire..Does the white wire have a tape around it. If it does that indicates that it is a 120 volt cuircuit and not a neutral, which means you have a 240 volt supply. Make sure your heater is 240 vac.

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Need front grill for singer model WJA-12 wall heater Cat # 9756-A
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a 750 watt heater at 240 volts draws 3.15 amps so a 2 pole 15 breaker with 14/2 wire would be fine

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