Question 1

You arrive and the machine is completely dead. Walk me through your first few minutes.

Accepted Answer

It's the most common call there is. They want a method, starting with the simple things, not a tech who opens the panel and starts pulling boards. Talk to the person who reported it: what happened right before, any error codes, any recent work Check the obvious first: power at the outlet or disconnect, breakers, fuses, the emergency stop Lock out before opening anything, then verify power with your meter at the input Follow the power path through the schematic until you find where it stops Name a real example where the fix turned out to be simple, like a tripped breaker someone reset wrong

Question 2

Tell me about the hardest fault you've ever tracked down.

Accepted Answer

This is where they learn how deep your troubleshooting goes. A good story shows patience, a logical order of tests and knowing when to ask for help. Set it up quickly: the equipment, the symptom, and why it was hard (intermittent, no code, misleading readings) Walk through what you tested and what each result ruled out Say what you got wrong along the way, if anything, and how you caught it End with the root cause, the fix, and what you wrote in the notes so the next tech wouldn't repeat it

Question 3

What's your process for lockout/tagout before you work on equipment?

Accepted Answer

Stored energy injures field techs every year, and a customer site isn't your shop. They need to hear that you do it every time, even when the customer is rushing you. Tell the customer or site contact the equipment is coming down Identify every energy source: electrical, pneumatic, hydraulic, spring tension, stored heat Isolate, apply your own lock and tag, and bleed off stored pressure Try to start it and verify zero energy with your meter before touching anything Mention a time you refused to skip it, even if it felt awkward

Question 4

The customer's production line is down and the part you need is back-ordered. What do you do?

Accepted Answer

This happens constantly, and how you handle it decides whether the account stays. They want to see you protect the customer and your company at the same time. Tell the customer straight away and honestly, with the real lead time, not a guess to calm them down Check other sources: another tech's van, a nearby branch, the manufacturer, an approved substitute Look for a safe temporary workaround, and say plainly you'd never bypass a safety device to get running Loop in your dispatcher or service manager so they can escalate if needed Document everything on the work order and book the return visit before you leave

Question 5

How do you decide when to call technical support or a senior tech?

Accepted Answer

Calling too early makes you expensive to support. Calling too late wastes a whole afternoon and sometimes a part. They want judgment, not pride. Describe a rough rule: once you've worked through the manual's steps and your own tests and you're guessing, you call Say what you have ready before you dial: model, serial, fault codes, readings you've already taken Give an example where a quick call saved a return visit Show you learn from it so you don't make the same call twice

Question 6

Read this wiring diagram and tell me why the motor won't start.

Accepted Answer

Plenty of candidates say they can read schematics. This is the fastest way to check. They're watching how you think out loud as much as whether you get it right. Orient yourself first: find the power source, the control circuit and the load Trace the control circuit through each switch, relay and interlock in order Say what reading you'd take at each point and what it would tell you If you're unsure of a symbol, say so and ask rather than bluffing

Question 7

A customer is angry that you're back again for the same problem. How do you handle it?

Accepted Answer

Repeat visits are the thing service managers track hardest, and you'll walk into accounts another tech has soured. They want calm, ownership and a fresh look. Let them finish, acknowledge the frustration, and don't blame the previous tech Read the service history before touching anything so you don't repeat the same fix Start the diagnosis from scratch rather than trusting the last conclusion Explain what you found in plain words and what you'll do if it comes back

Question 8

How do you plan your day when dispatch sends you a full board of calls across the territory?

Accepted Answer

You'll run your own schedule most days. They want to know you can sort by urgency and route without someone holding your hand. Sort by what's down and costing the customer money, then by contract priority, then by drive time Check van stock against every call before you leave so you're not doubling back Call ahead to confirm access and a contact on site Update dispatch as soon as a call runs long so they can move the later ones

Question 9

What does good service documentation look like to you?

Accepted Answer

Your notes drive billing, warranty claims and the next tech's visit. Vague notes cost the company real money, and managers read a lot of them. The symptom as reported, and the symptom you actually found Readings and tests, the root cause, the parts used with part numbers Photos of the before and after, and anything the customer was told or agreed to Close the work order the same day, not at the end of the week

Question 10

Which test equipment do you carry, and how do you know it's reading right?

Accepted Answer

A bad meter sends you chasing faults that don't exist. It's also a quick way to see if you own and care for your tools. Name the real kit: a multimeter, clamp meter, non-contact voltage tester, and anything specific to your equipment like a megohmmeter or manifold gauges Check the meter on a known live source before and after you test for zero energy Mention checking the rating on your meter and leads for the work you do Say you send gear for calibration when the company requires it

Question 11

Why do you want to work in the field instead of in a shop or plant?

Accepted Answer

The job is lonely, unpredictable and includes on-call nights. They've lost hires who didn't expect that, so they want an honest answer. Say what you actually like: the variety, running your own day, being the one who solves it Show you know the downsides: driving, weather, on-call, customers at their worst Give a concrete reason you'd handle them, like past on-call work or a long commute you managed

Field Service Technician interview questions and how to answer them

The 8 questions you will almost certainly get

A forgettable answer, and a better one

"You arrive and the machine is completely dead. Walk me through your first few minutes."

"Tell me about the hardest fault you've ever tracked down."

Questions to ask them

Need more Field Service Technician interviews to prep for?

The question	What they want to know	Your angle
You arrive and the machine is completely dead. Walk me through your first few minutes.	It's the most common call there is. They want a method, starting with the simple things, not a tech who opens the panel and starts pulling boards.	Talk to the person who reported it: what happened right before, any error codes, any recent work
Tell me about the hardest fault you've ever tracked down.	This is where they learn how deep your troubleshooting goes. A good story shows patience, a logical order of tests and knowing when to ask for help.	Set it up quickly: the equipment, the symptom, and why it was hard (intermittent, no code, misleading readings)
What's your process for lockout/tagout before you work on equipment?	Stored energy injures field techs every year, and a customer site isn't your shop. They need to hear that you do it every time, even when the customer is rushing you.	Tell the customer or site contact the equipment is coming down
The customer's production line is down and the part you need is back-ordered. What do you do?	This happens constantly, and how you handle it decides whether the account stays. They want to see you protect the customer and your company at the same time.	Tell the customer straight away and honestly, with the real lead time, not a guess to calm them down
How do you decide when to call technical support or a senior tech?	Calling too early makes you expensive to support. Calling too late wastes a whole afternoon and sometimes a part. They want judgment, not pride.	Describe a rough rule: once you've worked through the manual's steps and your own tests and you're guessing, you call
Read this wiring diagram and tell me why the motor won't start.	Plenty of candidates say they can read schematics. This is the fastest way to check. They're watching how you think out loud as much as whether you get it right.	Orient yourself first: find the power source, the control circuit and the load
A customer is angry that you're back again for the same problem. How do you handle it?	Repeat visits are the thing service managers track hardest, and you'll walk into accounts another tech has soured. They want calm, ownership and a fresh look.	Let them finish, acknowledge the frustration, and don't blame the previous tech
How do you plan your day when dispatch sends you a full board of calls across the territory?	You'll run your own schedule most days. They want to know you can sort by urgency and route without someone holding your hand.	Sort by what's down and costing the customer money, then by contract priority, then by drive time