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The open lower cabinet beside a new dishwasher in a home kitchen, the dishwasher's drain hose rising in a high loop and clipped to the underside of the counter, a braided supply line running to a quarter-turn valve, a folded towel on the cabinet floor, nobody in the frame.

Dacor 4C — a water supply check on a new dish care machine

Dacor's own installation and user manual documents 4C as a water supply check, tied to the water supply valve being closed, the water supply itself being suspended, or the water inlet valve or line being frozen or clogged by foreign particles left over from installation.

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Mon–Sat, 8am–8pm

  • Water supply and drain
  • Water supply and shutoff connection
  • Source: Dacor

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What 4C
actually means.

Dacor's own installation and user manual documents 4C as a water supply check, tied to the water supply valve being closed, the water supply itself being suspended, or the water inlet valve or line being frozen or clogged by foreign particles left over from installation.

Dacor appliance display · also shown as 1C

What to do when 4C shows on the appliance

Kind of codeWater supply and drain

The new appliance is reporting what it gets from the water connections behind it. A no-water or slow-fill message on the first fill usually means the supply valve is still closed or only half open, or the new line kinked when the unit slid back; a drain message means the drain hose is pinched, pushed too deep into the standpipe, or looped higher or lower than the installation instructions allow. Open the valve fully, straighten the hose, set it to the height the manual gives, and run the cycle again.

Usually leads toWater supply and shutoff connection

New supply lines from a working quarter-turn stop to each water appliance, tested under pressure.

Shows up asWater Leak After an Install: Close the Supply Valve First

A water leak after an install is water on the floor, a drip behind the kick plate or a wet cabinet in the first days after a new appliance was connected to water or a drain.

MakeDacor

Dacor installs range from wall ovens and ranges with a matching hood to column refrigeration and a panel-ready dishwasher in the same run of cabinets.

SourceDacor dishwasher installation and user manual — water supply check

Dacor documents 4C on its current built-in dishwasher installation and user manual.

Before you book,
in this order.

Each step comes from Dacor's own guidance for 4C on its appliances. Follow it to the end: the last card says whether this is a visit.

01

Confirm the water supply valve behind the unit is fully open.

02

Check that the house water supply itself has not been shut off or suspended.

03

Inspect the inlet line for debris or a kink left from fitting the unit into place.

04

Run a short cycle once the supply is confirmed clear before assuming any part needs attention.

Still there?

It usually turns into water supply and shutoff connection. Book with the code and the model number.

What not to do

4C does not by itself mean the inlet valve has failed. Dacor's own documented causes — a closed valve, a suspended supply, or debris in the line — are all installation-side details rather than a part.

What you may
notice with it.

The appliance problems 4C tends to arrive with. Answer these at the appliance before anyone is booked.

All problems

Before you call

Water Leak After an Install: Close the Supply Valve First

All 6 causes, cheapest first

It also comes with

A kitchen floor in front of a newly installed dishwasher, its kick plate removed and leaning against the cabinet, a small spreading pool of clear water on light wood flooring below the open toe space, a folded dry towel lying nearby untouched, the sink cabinet door open beside it with a chrome stop valve visible, seen low from across the room. Hazard after a hookup

Water Leak After an Install: Close the Supply Valve First

6 causes, cheapest first

Where 4C usually leads

Water supply and shutoff connection.

New supply line and quarter-turn stop for a refrigerator, ice maker, dish care machine or laundry pair, flushed and tested under pressure · low.
Book a visit What the job involves

Dacor
appliances.

Dacor installs range from wall ovens and ranges with a matching hood to column refrigeration and a panel-ready dishwasher in the same run of cabinets.

Dacor appliance installation

More Dacor codes

5CoFSb on

Water supply and drain on other makes

ASKO F12Bosch E17Cove Error 800115DCS Blank display / OFF after power interruptionElectrolux HO SEFisher & Paykel Water is not getting to the machineFrigidaire E1Gaggenau E:3200
All 38 codes of this kind
A bright kitchen during an installation, a new stainless French door refrigerator on a low four-wheel appliance dolly being eased toward an empty cabinet opening, a technician seen from behind and shoulders down guiding it with one hand on the side of the cabinet, a folded moving blanket and a coil of new braided water line on a protective floor runner, cardboard corner guards at the edge of the frame, even daylight. Dacor builds this

Cold storage

Setting a new refrigerator, freezer, wine or beverage unit or ice maker into its opening: measured, connected to water, leveled and started.

 A home kitchen mid-installation, a new stainless freestanding gas range pulled a foot out from its opening, a technician seen from the shoulders down kneeling beside it and tightening a new yellow-coated flexible gas connector to a wall shutoff valve with a wrench, a small spray bottle of leak solution on the floor, the anti-tip bracket screwed to the floor at the back, every burner off, even daylight. Dacor builds this

Cooking appliances

Hooking up ranges, cooktops, wall ovens, microwaves and hoods: gas connectors leak-tested, anti-tip brackets fastened, ducts sized and the first light checked.

 A kitchen during an installation, a new stainless built-in dishwasher halfway slid into its opening under a stone counter, its kick plate removed, a technician seen from behind and shoulders down on one knee guiding a gray drain hose and a braided supply line through the hole in the side cabinet, the sink cabinet doors open beside him, a flashlight on the floor, even daylight. Dacor builds this

Dish care

Fitting a new dishwasher or dish drawer under the counter: supply line, drain loop or air gap, power, mounting brackets and a first test cycle.

In Dacor's own words

Check if the water supply valve is closed, if the water supply is suspended, or if the water inlet valve or line is frozen or clogged by foreign particles.
Dacor dishwasher installation and user manual — water supply check

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Dacor documents 4C on its current built-in dishwasher installation and user manual.

Dacor 4C appliance installation,
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 family unpacking groceries into a newly fitted kitchen, the fresh appliances set flush in their openings.
For the heart of your home.

Questions
about 4C.

Can I clear 4C myself?
Confirm the water supply valve behind the unit is fully open. If it comes back, it needs a visit.
Why would a brand-new dish care machine show 4C the very first time it runs?
The most common cause is a supply valve that was never fully opened, or debris left in the inlet line from installation. Both clear once the connection is checked and corrected.
Does 4C mean the water inlet valve needs replacing?
Not on its own; Dacor's documented checks are all about the supply side of the connection, so ruling those out first is the correct order of operations.
Could cold weather cause 4C on an install in an unheated space?
Yes, Dacor names a frozen line as one of the documented causes, which matters for units installed in a garage or an unheated utility space.

Back to your everyday

Still showing 4C?

A booking moves faster with three things: the message exactly as the display shows it, the model number from the carton or the rating plate, and the moment it first appeared. With those, the office can tell whether it is a setup step or a connection to put right, and send the part that fixes it.

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