Susan Brown

[Susan Brown]

Correct, which would cause both compartments to warm up.

[Susan Brown]

1. That is what the defrost heater does. The thermostat is there as an overheat protection and will fail open if necessary. If it fails open, the heater will not receive any power.
2. As I wrote above, it is not a sensing device. But if it fails open, the heater will not function.

What happens if the defrost heater does not function?

[Susan Brown]

“What would happen to the evaporator coil if the defrost thermostat failed open?”

Let’s break this down. Answer these:
1. What is the function of the defrost thermostat?
2. If it fails open, what does that mean for the defrost heater – how will that affect it?

[Susan Brown]

Hi Jocinto,
In Basic Electricity Unit 1, both the video and the definition of voltage.

[Susan Brown]

Hi Brian – I just sent you an email

[Susan Brown]

Hi Brandon,
You’ll learn more about these in the Advanced Oven & Range course.

[Susan Brown]

Hi Brandon,

“Stove” is more properly used to refer to a fuel-burning unit that provides heat to a living space (wood stove, pellet stove, etc.). Obviously, back in the day, they were often used for both heating and cooking. Now that most people use completely different appliances for those two functions, it’s better to use different terms. It’s not a huge deal, just good to have precise terminology.

From Unit 5:
“Each burner on a cooktop has a knob that controls it. This knob performs two functions. When it’s turned on, it opens a gas valve, allowing gas to flow to its associated burner. The knob also controls a switch that sends voltage to a device called the spark module, which in turn sends a spark to the burner that ignites the gas.”

The knob *controls* the valve and the switch. Usually, there is a particular way you activate the switch to ignite the flame – either by pressing in on the knob or putting it at a specific position. Once the flame is lit, you turn the knob to adjust the amount of gas coming out to get the flame size you desire.

[Susan Brown]

Hi Brandon,
Nice to “meet” you!

Your parents both come from warm climates – how do they like living in the northeast? I spent most of my youth/young adulthood in Georgia and South Carolina, but have lived in cold climates for the past 30 years. I mostly like it, but I wish I could spend March through May in the south.

I will ask one of our more technical team members to take a look at your questions and get back to you.

[Susan Brown]

Okay – I’ve given you one more attempt. Go get ’em!

[Susan Brown]

Yes! If L1 was open, we would not measure any voltage at the bulb, on either side.

Compare this scenario with Question 9 on the Midterm. That was an L1-L2 circuit – both sides hot – so we didn’t know which side was open until we disconnected one of the sides and remeasured.

With an L1-N circuit, that “half-splitting” is not necessary, since there is only one hot side.

Does that make sense?

[Susan Brown]

1. correct
2. Would that be the L1 side or the N side?

[Susan Brown]

Your answer: “there is no current flow because of a fault condition ”

Is correct, just not complete.

1. What type of fault condition usually causes there to be no current? (We do have voltage present.)
2. Which side is the fault on?

[Susan Brown]

yes

[Susan Brown]

Yes, it (tracing out the circuit that the load is in) helps you to focus in on the things that might be affecting your load. This will streamline your troubleshooting. It will also help you to identify EEPs for your measurements.

[Susan Brown]

We just want to know why, in general, this is such a helpful thing.

We demonstrate it in a lot of our videos.

Here’s part of the section on load analysis in the Troubleshooting module. It describes the challenge of reading a schematic, and how doing a load analysis helps you deal with that.

“Load Analysis (selecting the Load of Interest)

When you first open up a schematic, it can look overwhelming– so many lines and squiggles! But don’t be intimidated by that and don’t get lost in the all the circuitry. Focus like a laser on the problem at hand. If a water inlet valve isn’t opening, find that valve on the schematic and see how it’s supplied with voltage.

This technique of locating your load of interest and seeing how it gets voltage is called load analysis. The load of interest is whatever isn’t working right: a motor, light, fan, valve, etc. It’s the most common thing you’ll be doing with schematics. In load analysis, you’re not interested in the Big Picture, just on a specific load.”

[Author]

Posts