Delfield uHi: line voltage is above 140 volts
The same controls that warn of low voltage also watch for voltage that is too high, above 140 volts.
Mon–Sat, 8am–8pm
- Controls and power
- Commercial controls and board repair
- Source: Delfield
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What uHi
actually means.
The same controls that warn of low voltage also watch for voltage that is too high, above 140 volts. High voltage stresses the compressor, fans and the control itself. It usually points to a wiring or supply issue in the building.
Delfield commercial appliance display
What to do when uHi shows on the commercial applianceKind of codeControls and power
The controller itself is reporting trouble, or the supply behind it is: a display with dead segments, a keypad that stopped responding after steam or degreaser got behind it, relays that stick, stored recipes or cycles that vanished overnight, a blown control fuse, or one leg of a three-phase feed missing so half the heat or the pump is gone. A full power cycle at the breaker, done as the manual describes, clears a passing glitch; a code that returns, a scorched smell or any sign of moisture behind the panel means the breaker stays off, and that is a visit.
Usually leads toCommercial controls and board repair
Controllers, touch panels, relays, contactors and interlocks tested, and replaced only when the evidence says so.
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.
MakeDelfield
For a Delfield station that runs warm by late lunch, we time the visit to a slow hour so the pans can come out and the rail can be tested empty.
SourceDelfield 6000XL and 6100XL Series reach-ins, installation, operation and maintenance manual, part 9294254 (archived copy of the delfield.com PDF)
Listed in the operation and indication table of Delfield's R290 reach-in manual (6000XL/6100XL) and prep table manual (4400/4500 Series).
Before you book,
in this order.
Each step comes from Delfield's own guidance for uHi on its commercial appliances. Follow it to the end: the last card says whether this is a visit.
Do not keep resetting the unit; note when uHi appears.
Ask an electrician to measure the outlet and check the circuit wiring.
Book a visit if uHi remains once the supply is confirmed normal.
Still there?
It usually turns into commercial controls and board repair. Book with the code and the model number.
What not to do
uHi is not a temperature alarm and not a failed control. It is the opposite of uLi, which warns of voltage under 96 volts.
What you may
notice with it.
The commercial appliance problems uHi tends to arrive with. Answer these at the commercial appliance before anyone is booked.
All problems
Where uHi usually leads
Commercial controls and board repair.
Delfield
commercial appliances.
For a Delfield station that runs warm by late lunch, we time the visit to a slow hour so the pans can come out and the rail can be tested empty.
Delfield commercial appliance repairMore Delfield codes
Controls and power 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.
In Delfield's own words
Line voltage too high, above 140 volts uHi
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Listed in the operation and indication table of Delfield's R290 reach-in manual (6000XL/6100XL) and prep table manual (4400/4500 Series).
Delfield uHi 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 uHi.
Can I clear uHi myself?
What causes uHi on a Delfield?
Is uHi on a Delfield dangerous?
Will uHi on a Delfield clear by itself?
Back to your everyday
Still showing uHi?
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.