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A stainless door-type dish machine in a restaurant dish room with its hood raised and its wash chamber empty, a clean wire rack on the landing table beside it, the tiled floor dry, nobody at the dish machine.

Alto-Shaam E01: the roll-in combi's steam generator is low on water

Roll-in CTP models make steam in a separate generator that fills through a solenoid valve.

(844) 571-4566

Mon–Sat, 8am–8pm

  • Water, fill and drain
  • Dish machine repair
  • Source: Alto-Shaam

Book a visit

Three short steps, about a minute.

or call (844) 571-4566

What E01
actually means.

Roll-in CTP models make steam in a separate generator that fills through a solenoid valve. When the upper level probe is still dry five minutes after the valve opens, the display calls out E01. Low supply, scale on the level probe and drain parts that leak are the usual reasons the manual lists.

Alto-Shaam commercial appliance display

What to do when E01 shows on the commercial appliance

Kind of codeWater, fill and drain

Water is not arriving, not reaching its level, not heating or not leaving on time. A dish machine may be short of fill because a supply valve is half closed or its line strainer is clogged, it may drain slowly through a scrap basket full of debris, or its booster may be too scaled to heat the rinse; a combi's steam generator may be scaled or its water treatment exhausted; a washer-extractor may time out on a slow drain. Opening the supply valve, cleaning strainers with the unit off and checking the drain line are fair; a pump, a fill valve, a heater or a leak near wiring is a visit.

Usually leads toDish machine repair

Undercounter, door-type and conveyor dish machines: tank heaters, boosters, wash pumps, fill and drain valves.

Shows up asCommercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display

A commercial appliance error code appears as letters or numbers on a combi, fryer, reach-in controller, dish machine or laundry machine display, or as a flashing light or an alarm tone.

MakeAlto-Shaam

An Alto-Shaam call is usually booked for the hours between the last plate and the prep crew, so the cabinet can cool and the tech can open it without holding up service.

SourceAlto-Shaam Combitherm CT PROformance Series operator's manual, MN-35948 Rev 21 (10/21) (Wayback copy)

Roll-in Combitherm CTP models only, per the E01 row of MN-35948 Rev 21.

Before you book,
in this order.

Each step comes from Alto-Shaam's own guidance for E01 on its commercial appliances. Follow it to the end: the last card says whether this is a visit.

01

Press Start to acknowledge the code and let the oven try to recover.

02

Make sure the valve feeding the oven is open and that the kitchen's other taps run normally.

03

If E01 returns, book a visit so the level probe, fill valve and drain pump parts can be checked.

Still there?

It usually turns into dish machine repair. Book with the code and the model number.

What not to do

E01 is not the lower level alarm, which the CTP shows as E51 when the probe near the bottom never sees water. It also appears only on roll-in models; table-top CTP ovens do not list it.

What you may
notice with it.

The commercial appliance problems E01 tends to arrive with. Answer these at the commercial appliance before anyone is booked.

All problems

Before you call

Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display

All 8 causes, cheapest first

It also comes with

Close view of the dark touch control panel on the front of a stainless combi oven in a commercial kitchen, one abstract amber warning indicator glowing among unlit icons, the steam-fogged glass door blurred beside it. Problem

Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display

8 causes, cheapest first

Where E01 usually leads

Dish machine repair.

Dish machine tank heater or booster element, thermostat, fill valve, float switch, drain valve, wash pump seal or motor, conveyor drive · moderate.
Book a visit What the job involves

Alto-Shaam
commercial appliances.

An Alto-Shaam call is usually booked for the hours between the last plate and the prep crew, so the cabinet can cool and the tech can open it without holding up service.

Alto-Shaam commercial appliance repair

More Alto-Shaam codes

E02E03E13E20E21E34E36E57E89E92E100E105
All 15 Alto-Shaam codes

Water, fill and drain on other makes

Blodgett Water Level ErrorCleveland LOW WATER lightDexter F2Frymaster E33Hatco LO H2OHobart 019Miele Professional F18Pitco DRAINING TURN OFF
All 45 codes of this kind
A row of three stainless steel reach-in cabinets with solid doors along the wall of a working restaurant kitchen, the reach-ins clearly the subject, one door open showing sheet pans of prepped vegetables on wire shelves, a walk-in cooler door with a clear strip curtain visible at the far end, a cook seen only from behind in a white jacket passing in the soft background, bright even kitchen light. Alto-Shaam builds this

Commercial cold storage

Reach-in and pass-through cabinets, walk-in coolers and walk-in freezers, prep and sandwich tables, undercounter units and blast chillers that hold a kitchen's food at safe temperatures.

 A working restaurant cooking line under a stainless ventilation hood, two stainless gas fryers with baskets hanging above the oil, a flat griddle and a combi oven with a glass door beside them, the equipment clearly the subject, a cook seen only from behind and shoulders down at the far end of the line, warm kitchen light, small blue flames visible under the griddle. Alto-Shaam builds this

Commercial cooking equipment

Fryers, griddles, charbroilers, restaurant ranges, convection and combi ovens, steamers, kettles, holding cabinets and toasters, on gas or electric, that make up the hot side of a kitchen line.

In Alto-Shaam's own words

Upper water level probe B1 is not satisfied within 5 minutes
Alto-Shaam Combitherm CT PROformance Series operator's manual, MN-35948 Rev 21 (10/21) (Wayback copy) Alto-Shaam Combitherm CT PROformance Series operator's manual, MN-35948 Rev 21 (10/21) (Wayback copy) Alto-Shaam Combitherm CT PROformance Series operator's manual, MN-35948 Rev 21 (10/21) (Wayback copy)

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Roll-in Combitherm CTP models only, per the E01 row of MN-35948 Rev 21.

Alto-Shaam E01 commercial appliance repair,
where we come out.

The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.

All service areas

Tampa BayFL · 31 areas

OrlandoFL · 30 areas

Miami / South FloridaFL · 47 areas

New York MetroNY · 75 areas

HoustonTX · 36 areas

ChicagoIL · 50 areas

Los AngelesCA · 95 areas

San DiegoCA · 31 areas

San Francisco Bay AreaCA · 74 areas

A restaurant team working a busy commercial kitchen line.
For the heart of your home.

Questions
about E01.

Can I clear E01 myself?
Press Start to acknowledge the code and let the oven try to recover. If it comes back, it needs a visit.
Why does my Alto-Shaam roll-in combi show E01 after the water was shut off?
The steam generator could not fill while the supply was closed. Open the valve fully, acknowledge the code and watch whether the next fill completes.
Can scale cause E01 on an Alto-Shaam Combitherm?
Yes. The manual names calcium on the upper level probe as one cause, because a coated probe can miss the water. Regular descaling of the steam generator helps prevent it.
Does E01 appear on table-top Alto-Shaam combis?
The manual says E01 applies only to roll-in models. Table-top owners seeing a water problem should look for other numbers, such as E105.

Back to your everyday

Still showing E01?

A booking with a code goes further when it has the code as shown, the model and serial from the data plate, and a word on whether the unit still holds temperature, heats, rinses or spins. With those three, the office can match the likely part to your unit the same day.

Schedule a repair Call (844) 571-4566
(844) 571-4566 Schedule a repair