

Scotsman code 4: high discharge temperature or pressure control open
On a Prodigy cuber, the controller watches discharge temperature and stops at 250 °F.
Mon–Sat, 8am–8pm
- Condenser and airflow
- Ice machine condenser and fan repair
- Source: Scotsman
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What 4
actually means.
On a Prodigy cuber, the controller watches discharge temperature and stops at 250 °F. On a CM3 nugget or flake machine, 4 means a pressure control opened. Both usually trace to a condenser that cannot shed heat: a clogged filter, a dirty coil, a failed fan, hot air being drawn back in, or on remote systems, a low charge.
Scotsman ice machine display
What to do when 4 shows on the ice machineKind of codeCondenser and airflow
The machine could not shed its heat. An air filter packed with lint, a condenser coil furred with grease and dust, a fan motor that no longer spins, a machine pushed into a hot corner without its clearance, a water-cooled condenser whose regulating valve starves it, or a remote condenser on a roof blocked by leaves all show up here. Washing the air filter and freeing the space around the machine clears many cases; a fan motor or a valve means a visit.
Usually leads toIce machine condenser and fan repair
Air-cooled coils, fan motors and filters, water-cooled regulating valves and rooftop remote condensers, cleaned or repaired so the ice machine can shed its heat.
Shows up asIce Machine Error Code or Flashing Light: What It Is Telling You
An ice machine error code may show as a number on a small display, a pattern of blinking lights on the control board, a colored light on the front, or a machine that stops with one indicator flashing.
MakeScotsman
A Scotsman visit sorts out which kind of ice the machine makes, because each kind follows a different service path.
SourceScotsman Prodigy ELITE modular cuber service manual, MC0322 through MC2148 (January 2022)
Prodigy and Prodigy ELITE cubers (MC and C models) show one character in the code display next to the lights. Prodigy flaked and nugget machines with the CM3 control (N and F models) use the same display with a different code list. ELITE maximum discharge temperature: 250 °F.
Before you book,
in this order.
Each step comes from Scotsman's own guidance for 4 on its ice machines. Follow it to the end: the last card says whether this is a visit.
Clean the condenser air filter and give the machine room to breathe on all vented sides.
Make sure it is not pulling in hot air from an oven, dishroom or its own exhaust.
If 4 returns after the airflow is clear, turn the machine off and book a visit.
Still there?
It usually turns into ice machine condenser and fan repair. Book with the code and the model number.
What not to do
4 is not a water problem, which is 3, and it does not come from the temperature sensor itself failing, which is 7.
What you may
notice with it.
The ice machine problems 4 tends to arrive with. Answer these at the ice machine before anyone is booked.
All problemsWhere 4 usually leads
Ice machine condenser and fan repair.
Scotsman
ice machines.
A Scotsman visit sorts out which kind of ice the machine makes, because each kind follows a different service path.
Scotsman ice machine repair
Modular ice machine
An ice-making head set on top of a separate storage bin or drink dispenser, cooled by air, water or a condenser on the roof, turning out hundreds of pounds of cubes a day.
Undercounter ice machine
A self-contained ice machine that makes and stores its own ice under a bar, a service counter or a kitchen island, from commercial units to clear-ice models in large homes.
Nugget ice machine
An ice machine that freezes a thin layer inside a chilled cylinder and pushes it out with an auger as soft, chewable nuggets, for clinics, offices, hotels and large homes.
In Scotsman's own words
High Discharge Temp
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Prodigy and Prodigy ELITE cubers (MC and C models) show one character in the code display next to the lights. Prodigy flaked and nugget machines with the CM3 control (N and F models) use the same display with a different code list. ELITE maximum discharge temperature: 250 °F.
Scotsman 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 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 4.
Can I clear 4 myself?
Why does my Scotsman show 4 only in summer?
Can I clean the condenser on my Scotsman myself?
Is code 4 on a Scotsman a sign of a leak?
Back to your everyday
Still showing 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.