A white drain line running from the base of a stainless ice machine bin down to a floor sink, a clear air gap above the sink, the floor around the ice machine dry.

Ice-O-Matic Error 4: double red and yellow flashes, sump did not purge

After harvest, an Elevation CIM purges the old sump water through its purge valve to the drain.

(844) 410-9163

Mon–Sat, 8am–8pm

  • Drain and pump
  • Ice machine drain and pump repair
  • Source: Ice-O-Matic

Book a visit

Three short steps, about a minute.

or call (844) 410-9163

What Error 4
actually means.

After harvest, an Elevation CIM purges the old sump water through its purge valve to the drain. If the water level does not fall within two minutes, the board shows Error 4. A purge valve clogged with scale, a blocked drain, or a drain line with no vent are the usual reasons. Ice-O-Matic does not recommend a drain pump for CIM heads.

Ice-O-Matic ice machine display

What to do when Error 4 shows on the ice machine

Before you book,
in this order.

Each step comes from Ice-O-Matic's own guidance for Error 4 on its ice machines. Follow it to the end: the last card says whether this is a visit.

01

Check the purge drain line behind the head for kinks and see whether the floor drain is backing up.

02

Make sure the drain lines are vented and run separately, as Ice-O-Matic asks.

03

If the sump stays full, book a visit to clean or replace the purge valve.

Still there?

It usually turns into ice machine drain and pump repair. Book with the code and the model number.

What not to do

Error 4 is not a water supply problem; that is Error 3. It does not mean the bin drain is blocked, although a shared, blocked floor drain can cause both.

Where Error 4 usually leads

Ice machine drain and pump repair.

Drain line clearing, air gap, drain pump, float and check valve · low to moderate.

In Ice-O-Matic's own words

DOUBLE RED AND DOUBLE YELLOW QUICK FLASH – Unit has experienced a MAX Purge (2 min.)
Ice-O-Matic Elevation Series CIM modular cuber technical service manual (5/11/26) Ice-O-Matic Elevation Series CIM modular cuber technical service manual (5/11/26)

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Elevation Series CIM modular cubers. Codes show as red and yellow flash patterns on the POWER and CLEAN buttons of the push pad and the board. Boards before serial 2106 grouped some limits differently.

Ice-O-Matic Error 4 ice machine 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
A family filling glasses with nugget ice from an ice machine in a large home kitchen.
For the heart of your home.

Questions
about Error 4.

Can I clear Error 4 myself?
Check the purge drain line behind the head for kinks and see whether the floor drain is backing up. If it comes back, it needs a visit.
Can I put a drain pump on my Ice-O-Matic CIM to fix Error 4?
Ice-O-Matic advises against a drain pump on CIM heads. A proper gravity drain, vented and run separately, is the fix.
Why is my Ice-O-Matic ice cloudy along with Error 4?
When the sump does not purge, minerals stay in the water and end up in the ice.
Is Error 4 urgent on an Ice-O-Matic?
Only if water is spreading on the floor. Then stay clear, switch the breaker off from a dry panel and close the supply valve.

Back to your everyday

Still showing Error 4?

A booking with a code goes further when it carries the light or code copied as it appeared, the model and serial off the data plate, and a word on whether cubes still fall into the bin. With those three in hand, our office can match the probable part to your machine the same afternoon.

(844) 410-9163 Schedule a repair