Question about Hayward 1.5 Hp Northstar High Performance Pump

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Motor wsurges on and off only one speed was purchased as 2 speed

Motor set up at factory as 240. I have 120. Technican advise to eliminate one wire when connecting. Pump motor cycles in and off continually.

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  • Hayward Master
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Do NOT listen to your 'technician'. Is the motor rated for both 115 and 230 or just 230? If it says both voltages on the nameplate it will also tell you how to reset the motor for 115. Follow those directions and you should be all set.

Posted on Jul 13, 2009

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I have a sears whole house fan.The replacement motor has 2 poles ,the original has 3.The wire coming to the motor has 3 wires:black,red,white.The fan is 2-speed.This is the right motor.How should the...


The white wire is neutral which is how the current makes a complete path through the fan then back to the panel and operates the motor. the replacement switch you have is a two speed black(high) red (low) switch. If you had 3 speeds before and wish to continue getting all 3 you will need to get a compatible switch. Otherwise eliminate the medium speed (blue) wire and use the switch you have. If the fan has a wire connector system just cut the copper tip even and place a orange cap of wire cap the size that fits tightly to provide good protection.

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I have a Lennox Diplomat furnace. How can I tell if the blower motor is set for high speed when it comes on?


The only way to really tell if the blower is set to high is to look at the control board inside the furnace and see how it is hooked up. You will have either a 3 speed or 4 speed blower motor, more than likely a 4. These are Hi, Med Hi, Med Low, Low. Each speed has its own color and if the motor has ever been changed, it could be different from factory diagrams. The most common colors/speeds are:

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You could have different colors but they will be close. If it's an aftermarket motor, the speeds will be listed on the motor itself, but very difficult to get to sometimes. On the board, you should have terminals marked, COOL, HEAT, PARK, PARK. You hook what speed you want for Cool and Heat and put the other 1 or 2 wires on Park.

Again, these might not be exact, but these are the basics and they usually don't deviate from them to much unless it's a 95% furnace or such. If you do have the diagram for the furnace, you will be able to find everything with no problem now that you have the basics. Also keep in mind that you will have a Common wire from the motor that hooks to Com. terminals on the board. Hope this helps and good look!

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Heater only works on low setting


First, check all your fuses- if you find one that is blown, replace it with one that is the same rating- if it blows right away, there is a wiring problem that needs troubleshooting.

If all your fuses are OK.....

Find where the blower motor is- on most vehicles it is in the right knee area of the passenger side up front... sometimes it is on the passenger side under the hood. If you cannot find it, set the blower speed to low, turn on your key, but do not start the car (don't do this for more than a few minutes, because it can drain your battery). Follow the motor sound....

If the motor has only two wires going to it, the problem is probably with either the blower speed switch or the blower speed control relay. Sometimes, a 2 wire blower CAN wear out in a way that it will only run on low, but you can eliminate that possibility....

With a 2 wire blower, you can check the motor by running a set of jumper wires from a battery to the blower and see if it comes on full speed. First, connect a voltmeter across the connector so you know which side gets + and which gets -. If you are not comfortable with doing this yourself, by all means get a friend with experience or a mechanic to show you how.

If the motor has a bunch of wires going to it, the problem is probably the blower motor itself. These can be very expensive, and your best bet is to shop around online for one.

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My 94 integra ls not blowing air. when i turn on the ac the compressor comes on but blower does not. i need a diagram of the ac/heater blower motor


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Located on top of the blower assembly box is a connector with the following wires; Blue, blue/white, blue/ yellow, and blue/black. The device that the plug was connected to is called the resistor pack. Two screws hold it in place. Remove the resistor pack and check it for open or burnt resistors. If it is defective purchase a new one. Average cost is $25. If the fan motor did not run in the high position then more testing is required. If the air conditioner dash light comes on when you select A/C that eliminates the A/C switch. Next set the fan speed to first position. Place your ohm meter on the X10 scale and measure between the blue wire to ground...set fan speed to next position; measure between blue/white to ground...set next position; measure between blue/yellow to ground. Set fan to high position; measure between blue/black to ground. All readings should be zero ohms (full meter deflection). If they are not then the fan speed selector switch needs to be replaced. If all readings are correct then replacing the resistor pack will solve your problem.


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Have two wires disconnected from a carrier hvac unit that goes to supply air fan. they are 4 wires total. one yellow goes to l2 on circuit board and red to bm, the black and blue wire is not connected...


Hi, these wires control the speed of the blower motor.L-2 is one power leg and red to bm (blower motor). If the other 2 wires are wire tied out of the way, and they have always been this way, that's the way they come from the factory, to control different speeds. On a 230 volt blower motor, you will see a yellow which normally goes to L-2 on the board. Then you will have a black, red, and sometimes blue. Sometimes you will see L-2 with yellow, L-1 could be any one of the other colors as they are marked on the motor. Low, Med, and High speed are what these extra wires are for. So, you are only using 1-speed. If it is running, and has been, forget the other 2 wires. If its not working, look for a L-1 on the board and connect any one of the other 2 wires. Like I said though, if this is always how its been and running fine, this is a normal termination. Let me know if you have a motor problem, and I can walk you through it.
Shastalaker7
PS The BM red wire is L-1 on the board.

Dec 04, 2009 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

Wiring difficulties during hookup


The side of the motor will have a diagram showing how to connect the wires for common high and low speeds. There should also be a voltage selector device on near the terminals you connect your line wires to. Set that device to the 115 setting and you should be all set.

Jul 14, 2009 | Hayward SUPERPUMP 2.0 HP, 115/230V

1 Answer

The pump motor is a two speed 1.5 h.p.. It was factory set for 240 and I had only 110. Technician said we could eliminate one wire and this would accomplish the switch. The motor continually shuts on and...


Your three wire system was 115V? I assume then it was Line, neutral, and ground and you would hook the Line and neutral to the motor line posts and the ground to the ground post.

You also need to be sure to reset the motor from the 230 volt to the 115 volt setting to match the line voltage you are supplying.

Jul 13, 2009 | Hayward 1.5 Hp Northstar High Performance...

1 Answer

Pump motor runs very shot time turns on and off continuously


You have to go by the name plate connection for correct voltage and two speed operation. Check name plate and verify incoming voltage. Connect motor accordingly.

Jul 13, 2009 | Hayward 1.5 Hp Northstar High Performance...

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