We Thought Our Manitowoc Ice Machine Was Broken. It Was Dirty—and the Reset Button Was Not Where I Expected

Let me start with the Wednesday that made me a lot more careful about service quotes. I'm the office administrator for a 400-person company with three locations. I handle most of the facilities ordering—roughly $60,000 a year across eight vendors—so when the break room ice machine stopped making ice, it landed on my list. I report to operations and finance, which means I get to explain every line item.

The machine was a Manitowoc commercial ice machine, a B400 we'd inherited when we moved into the building. It had been quietly making ice for years, which is exactly why we didn't have a service contract. The first sign of trouble was a small red wrench icon on the display. Then the bin started emptying faster than it refilled.

If you've typed "manitowoc ice machine reset button location" into a search bar, you probably know the feeling. I did the same thing at about 9:15 on a Tuesday morning.

The reset button hunt

Our maintenance tech said "unplug it and plug it back in." I did. The wrench icon came back two hours later.

So I opened the PDF manual, the one we'd never printed, and found a section that referenced the Manitowoc ice machine 4 12 24 button. On our model, that's not a daily control. It's a selector in the control panel, and the manual's explanation was vague—something about cycle settings in hours. I'm still not sure exactly what it stands for, but knowing the phrase helped me find the right pages instead of guessing.

In those pages, in small print, there was the reset button location. On this B400, it's not on the front panel. It's a small red button on the control board behind the front louver panel. Not next to the power switch. Not on the outside. Behind the panel. I'm telling you this because I spent a frustrating half hour looking for a button that was right there the whole time—behind a piece of louvered metal I'd never thought to remove.

I pressed the reset button. The wrench icon cleared. The machine started clicking and filling, and I felt like a genius for about an hour.

The repeat failure and the quote

A week later, the wrench icon came back. This time the machine was in "waiting" mode and the bin was half empty. The manual mentioned water filters and scale buildup, but I didn't trust myself. I called a local HVAC/R company that advertised commercial refrigeration service.

The first quote sounded reasonable: $95 trip charge and $125 diagnostic fee. "We'll know more when we see it." I was about to say yes when the dispatcher added, "There may be an unscheduled service fee if it takes extra time." That's when I started asking the question I now ask with every vendor: "Is that all covered? What's NOT included?"

"I've learned to ask 'what's NOT included' before 'what's the price.'"

The tech came out, looked at the panel, and asked, "When's the last time you ran the clean cycle?" I didn't have a good answer. He pulled out the water filter and showed me the mineral buildup. "That's why it's stopping," he said. He quoted $380 to clean the machine and replace the filter, plus $220 for "urgent parts ordering" if we wanted it same-day.

The surprise wasn't that the machine needed maintenance. It was the difference between the first quote and the second one I requested. The second vendor, a smaller shop recommended by another office manager, sent a one-page quote with every line item: trip, diagnostic, cleaning solution, labor, filter, disposal, tax. The total looked higher—$612 vs. $380—but there was no "urgent parts ordering" line. No "unscheduled service" fee. No surprise.

When I asked the second vendor about the first quote, he said, "They probably don't include the cleaning solution or the labor to run the cycle. They'll add it when they're here." That's the kind of transparency problem I'd learned to watch for after a vendor once gave us a handwritten receipt that finance rejected.

We went with the second vendor. The final bill was $589. The first vendor's estimate, if I added the cleaning solution, the cycle labor, and the same-day ordering charge, would have been around $710. The most expensive quote was not the one with the highest number at the top.

The first vendor called back the next day to ask why I hadn't booked the service. I said the other quote listed everything. He paused and said, "That's fine." The pause was enough.

I also asked the second vendor to check the remote condenser while he was there. The lines to the roof were cool, the fan was drawing air, and the expansion valve was clear. That extra check cost me nothing because he'd already quoted a flat diagnostic fee. It's the kind of question I wouldn't have thought to ask a year ago.

One machine, two other lessons

While the tech was working, he mentioned the mechanical room. We have a refrigerated air dryer in there for the compressed air system that serves the loading dock and a few pneumatic controls. He pointed at its condenser coil and said it was filthy—the dryer was probably running longer and hotter than it should. I didn't know a refrigerated air dryer has a condenser coil you can clean. I thought that was just for refrigerators.

Those small maintenance items don't show up on a profit-and-loss statement as a category. They show up as a breakdown at 4:45 on a Friday. I started adding "check refrigerated air dryer condenser" to a quarterly reminder, right next to the expiration dates on the fire extinguishers.

That afternoon, I ordered a neck fan for the maintenance tech. It sounds like a silly small gesture, but he'd spent two hours in that hot mechanical room without complaining. The neck fan cost $24. He now calls me back within the hour instead of within the week.

And because the universe has a sense of timing, my home Frigidaire Gallery ice maker started making cloudy, small cubes that same week. I searched "how to clean frigidaire gallery ice maker" and found a twenty-minute process: empty the bin, wipe down the interior, run a vinegar solution, rinse. Different machine, different scale, same principle: clean before you call for help. I'm not saying a home ice maker is the same as a commercial one—it isn't. But the habit of checking the simple causes first works everywhere.

Our Frigidaire doesn't have a water line filter, but the manual still recommends a regular descale. That's basically the same idea as the Manitowoc clean cycle. The difference is the price of a part if you skip it.

What I'd do differently

I still kick myself for not reading the manual from the start. If I'd gone straight to the reset button location and run the cleaning cycle, I'd have saved the $95 trip charge and the $125 diagnostic fee. That's not a knock on the service company—it's on me for treating the manual as optional reading.

I don't have hard data on how often commercial ice machines need cleaning. But based on our five years managing three machines, my sense is every six months, not once a year. The B400 manual we downloaded from Manitowoc's site says the same thing for normal use: clean every six months and replace the water filter on schedule. I wish I'd followed it.

So now I'm building a maintenance calendar. Ice machines get the clean cycle twice a year. The refrigerated air dryer gets a quarterly filter check. Water filters get changed on a date I actually put in my calendar. And before any vendor gives me a price, I ask the only question that matters: "What's NOT included in that number?"

A month later, the red wrench light reappeared. I didn't panic. I pulled up the manual again, pressed the reset button, and ran the clean cycle. The light stayed off. The next morning, the ice bin was full.

This was accurate as of January 2025. Service rates, parts availability, and procedures vary by region and model, so verify the current manual and pricing before you make a decision.