How do I know if my well pump control box is bad?

Some of the most common indicators of a faulty well pump and pressure tank include:

  1. Fluctuations in water pressure throughout the home.
  2. Strange noises or rapid clicking sounds coming from the tank.
  3. Spitting faucets.
  4. Scalding shower water.
  5. High electric bills.





Do I need a well pump control box?

Why Is a Control Box for a Well Pump Important? Well pump controllers usually have microprocessors that monitor power-line pump and voltage motor power draw. A well pump control box is essential in that it protects submersible well pumps from: Too high or low voltage.

How does a submersible pump control box work?

Many small water systems have a single-source well with a submersible pump controlled by a pressure switch. The pressure switch senses pressure in the supply line. When line pressure drops, the pressure switch signals the pump control box to start the well pump.

Are well pump control boxes interchangeable?

The pumps are bolted onto the motors (with matching splined shaft). However, one major manufacturer makes its own motor and control box, which are not interchangeable. As for the others, motors and control boxes may be interchanged as long as horsepower, phase, and voltage are a match.

How do you tell if well pump pressure switch is bad?





How to Tell If Your Well Pump Pressure Switch Is Bad

  1. Your water pressure is at or above the cut-out pressure, yet the pump doesn’t turn off.
  2. Your pump doesn’t turn on at the proper cut-in pressure.
  3. You have low water pressure even though the pump is running.
  4. Your pump runs, but it cycles on and off repeatedly.


Why is my well pump not kicking on?

Check Your Breaker Box



Your well pump may have stopped working due to lack of power. Sometimes resetting a breaker or replacing a fuse affected by a power surge or brownout can fix this. If the well pump circuit breaker has tripped, the well pump itself may be failing.

Can you run a well pump without a pressure switch?

Without a pressure tank, your well pump will constantly be running or switching on and off. This can cause a well pump to overheat, burn out, or at the very least, shorten your pump’s lifespan. To avoid burning out your pump, you can switch it off when you are not using water.

How much does it cost to replace a pressure switch on a well pump?



Common well pump repairs include replacing the pressure switch (about $20 to $40 plus a service call) or replacing the tank ($250 to $500, plus installation costs). It’s a good idea, well experts say, to schedule an annual inspection of your well and its equipment. Such a service should cost $100 to $120.

What is the purpose of a control box on a well?

The main job of a well pump’s electrical control box is to cycle the pump’s pressure switch on and off. In a private well system, the pump draws up water from the groundwater supply and pumps it into a pressure tank. The pressurization that occurs inside the tank provides the force that gives a building running water.

Can you bypass a control box on a well pump?

Things You Will Need



Shut off electricity to the pump at the breaker box. Remove the screws on the box holding the pump control. Remove the box from the wiring attached to the back of the control plate. Loosen the screws holding the two wires to the back of the control knob or switch.

How do you reset a submersible well pump?



Move the reset lever up into the start position and hold it there. (You should hear water moving into the pressure tank from the well.) Hold the reset lever in the start position until the pressure builds up and the gauge reads over 40 PSI; then let it return to the AUTO position.

How can I bypass my well pump?

Quote from the video:
Quote from Youtube video: By wiggling these side to side while pulling backwards on them remove the two wires. Then you'll need a jumper wire such as this run your jumper wire. From one wire to the nut to the other.

How do you test a well pump?

The Right Way to Test a 3 Wire Submersible Well Pump

  1. Step #1: Check the voltage of your well motor. …
  2. Step #2: Turn off power to your well motor. …
  3. Step #3: Hooking the cords. …
  4. Step #4: Checking the Insulation Resistance. …
  5. Replacing the well pump’s pressure switch. …
  6. Check if the pump has power issues.

Why is my pressure switch not working?

Quote from the video:
Quote from Youtube video: On the pressure switch. And make sure that there's no debris in between the contacts. Basically what happens a lot of times is you get some kind of debris.

What are the 3 wires on a well pump?



In a 3-wire well pump configuration, the motor is connected by a black, red, yellow, and green (ground) wire. Three-wire pumps utilize a separate control box outside the pump that houses the important starting components, which is usually mounted on a nearby wall above the ground.

How do you wire a well pump control box?

Quote from the video:
Quote from Youtube video: Back. So you're going to have to strip them back about half an inch then you're going to feed your cables through to knockout in the bottom of this box and as I said its color keyed.

Do well pumps need to be grounded?

It is recommended that all well pump motors have the ground wire connected to the same service ground as any other motor would be. Grounding is a safety issue and offers protection from electric shock or electrocution due to leaking current.

How do you wire a pressure switch for a well?

Quote from the video:
Quote from Youtube video: Situation however the pressure switch in a three wire system is going to be located. Before your control panel and in a two wire system it's going to be located somewhere near the pressure tank.

How do you test a pressure switch?



Quote from the video:
Quote from Youtube video: So the first way you can check it is by setting your meter to the ohm symbol or – resistance.

How does a pressure switch work on a water pump?

When the pressure in the tank drops, usually as a result of an open tap, the pressure switch engages. Once the pressure reaches the steady state value again, the switch turns off, curtailing the flow of water.