

Hatco LO H2O: the display cabinet reservoir needs water
Humidified FSCDH display cabinets alternate LO H2O with the cabinet temperature until their six-quart reservoir is full.
Mon–Sat, 8am–8pm
- Water, fill and drain
- Dish machine repair
- Source: Hatco
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What LO H2O
actually means.
Humidified FSCDH display cabinets alternate LO H2O with the cabinet temperature until their six-quart reservoir is full. It is a fill prompt, and it doubles as the fill gauge: the manual tells you to stop pouring once LO H2O stops flashing. There is one twist worth knowing: the low water probe senses minerals, so pure distilled water can leave LO H2O flashing even when the reservoir is full.
Hatco commercial appliance display · also shown as LO H2O, Lo H2o
What to do when LO H2O shows on the commercial applianceKind 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.
MakeHatco
Hatco equipment is often checked in the gap between breakfast and lunch, when the station it serves can do without it for a short while.
SourceHatco Flav-R-Savor FSCD and FSCDH convected display cabinet installation and operating manual (Form FSCDM-1016)
Flav-R-Savor FSCD and FSCDH convected display cabinets; only humidified models have the reservoir and show LO H2O.
Before you book,
in this order.
Each step comes from Hatco's own guidance for LO H2O on its commercial appliances. Follow it to the end: the last card says whether this is a visit.
Fill the reservoir slowly through the water fill cup and stop the moment LO H2O stops flashing; overfilling creates a shock hazard.
If you use distilled water and LO H2O keeps flashing on a full reservoir, add one teaspoon of salt on the initial fill as the manual advises.
Do not use deionized water, which Hatco says shortens the life of the reservoir and heaters.
If LO H2O stays on with the reservoir full and salt added, book a visit for the low water protection system.
What not to do
LO H2O is a normal refill prompt, not a failure. It is also different from Lo on a non-humidified cabinet, which reports a cabinet below 70°F.
What you may
notice with it.
The commercial appliance problems LO H2O tends to arrive with. Answer these at the commercial appliance before anyone is booked.
All problemsWhere LO H2O usually leads
Dish machine repair.
Hatco
commercial appliances.
Hatco equipment is often checked in the gap between breakfast and lunch, when the station it serves can do without it for a short while.
Hatco commercial appliance repairMore Hatco codes
Water, fill and drain on other makes
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.
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.
Commercial dish machines
Undercounter, door-type and conveyor dish machines with their booster heaters and chemical feeds, the warewashing station that washes and sanitizes every rack before it goes back on the line.
In Hatco's own words
Stop filling when “LO H2O” stops flashing on display.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Flav-R-Savor FSCD and FSCDH convected display cabinets; only humidified models have the reservoir and show LO H2O.
Hatco LO H2O 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 areasTampa BayFL · 31 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
Questions
about LO H2O.
Can I clear LO H2O myself?
Why does LO H2O keep flashing on my Hatco cabinet when it is full?
How much water does a Hatco FSCDH reservoir hold?
Should I use tap or distilled water in a Hatco display cabinet?
Back to your everyday
Still showing LO H2O?
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.