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Brand · Combi ovens

Alto-Shaam Combi Oven Repair

Alto-Shaam Combitherm combi ovens are a regular job for us in Miami, Los Angeles, Houston, New York and San Diego, from the CT PROformance and CT Classic to older CT Express and ES models. Tell us the model number when you book.

1kind of equipment
3model series listed
79error codes explained
30 daysworkmanship warranty
01What goes wrong

Common Alto-Shaam problems we fix

In plain words, the way kitchen and laundry staff describe them when they call.

01

Low water or no steam

02

Control board temperature too high

03

Steam generator will not drain

04

Fan or drive error on the display

05

Gas oven fails to ignite

06

No rinse water message

The Combitherm Family

Alto-Shaam builds the Combitherm combi oven, and we repair the whole family. The CT PROformance has the PROtouch control and the CT Classic has a manual control. Both come as countertop and roll-in ovens, in boiler-free electric or gas versions and in steam generator versions. Model numbers start with the pan count and size, such as CTP10-20E or CTC7-20G. Older units include the CT Express, such as the 4-10ESi, and the ES and ESi ovens in 6.10, 10.10 and 20.20 sizes.

Water, Fans and Gas Ignition

A low water message or weak steam starts with the water supply valve, the inlet filter and line pressure, then scale on the level probe. A steam generator that will not drain usually has scale or a clog in the drain path. Control board temperature messages lead us to the cooling fan and a clogged intake, and fan or drive errors lead us to the fan wheel and the drive itself. A washable filter that is not seated properly can also trigger an error at start-up, so check that it is fully in place.

If gas is ever in the air, get everyone out and call the gas utility from outside. On gas models the oven lights with a hot-surface igniter and watches the flame with a sensor. If it fails to ignite three times, stop using it and call us.

Older Ovens

Hard water and humid kitchens are tough on steam ovens over the years. We tell you plainly when an older Combitherm is not worth repairing, and we give you the price in writing first. Repairs carry a 30-day workmanship warranty.

→Error codes

Alto-Shaam codes and alarms

What the display or the blinking light means, what is safe to check, and when to stop and call us.

E01Alto-Shaam Combi Oven Error Code E01: Low WaterE02Alto-Shaam Combi Oven Error Code E02: Control Temperature HighE03Alto-Shaam Combi Oven Error Code E03: Fan Motor ErrorE04Alto-Shaam Combi Oven Error Code E04: Lower Fan Motor ErrorE05Alto-Shaam Combi Oven Error Code E05: VFD Comm FailureE06Alto-Shaam Combi Oven Error Code E06: Lower VFD Comm FailureE07Alto-Shaam Combi Oven Error Code E07: Error Received from VFDE08Alto-Shaam Combi Oven Error Code E08: Error Received from Lower VFDE100Alto-Shaam Combi Oven Error Code E100: Maintenance Reminder Timed OutE101Alto-Shaam Combi Oven Error Code E101: Ventless Hood No PressureE102Alto-Shaam Combi Oven Error Code E102: Ventless Hood Filters MissingE103Alto-Shaam Combi Oven Error Code E103: Option Board Switch SettingE104Alto-Shaam Combi Oven Error Code E104: Option Board Not CommunicatingE105Alto-Shaam Combi Oven Error Code E105: No or Low Water PressureE108Alto-Shaam Combi Oven Error Code E108: Cooling Fan WarningE109Alto-Shaam Combi Oven Error Code E109: High Limit Switch OpenE11Alto-Shaam Combi Oven Error Code E11: Convection Temperature HighE13Alto-Shaam Combi Oven Error Code E13: Steam Generator Temperature HighE15Alto-Shaam Combi Oven Error Code E15: Condenser Temperature HighE20Alto-Shaam Combi Oven Error Code E20: B11 Core Probe FailureE200Alto-Shaam Combi Oven Error Code E200: SD Card Too LargeE21Alto-Shaam Combi Oven Error Code E21: N6 Cavity Probe FailureE210Alto-Shaam Combi Oven Error Code E210: VFD Under VoltageE211Alto-Shaam Combi Oven Error Code E211: VFD Over Voltage

All 79 Alto-Shaam combi ovens codes

FAQAlto-Shaam questions
Which Alto-Shaam ovens do you repair?

We repair the Combitherm CT PROformance and CT Classic, the older CT Express and the ES and ESi generations. Give us the model number from the data plate when you call, and we bring the right parts.

Why does my Combitherm say it is low on water?

Check that the water supply valve is open and the filter is clean. If the message stays, the cause may be low line pressure or scale on the level probe, which we test during the visit.

What should I do if my gas Combitherm will not light?

After a third failed ignition, stop using the oven and call us. Do not keep restarting it. Should gas ever be in the air, leave the building and call the gas utility from outside.

Book a visit

Book Alto-Shaam repair in Miami, Los Angeles, Houston, New York and San Diego

Tell us the maker, the model number from the data plate and what the unit is doing. We confirm a three-hour arrival window and give you a written price before any work starts.

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