---
title: "Dishwasher error code F1"
description: "Asko dishwasher error code F1: The control watches the water climb during the heating stage, and if it has not gained five degrees in ten minutes it abandons…"
url: "https://askomiami.support/error-codes/dishwasher-f1/"
date_modified: "2026-09-13"
Appliance type: "Dishwashers"
---


# Dishwasher error code F1

### What F1 means on this make

The control watches the water climb during the heating stage, and if it has not gained five degrees in ten minutes it abandons that stage and carries on with the program. On this generation there is no indication of it at the panel at all — the machine simply washes cold and you notice the dishes rather than the code. What it points at is the element, the thermistor reading for it, or a machine being fed cold water where it expects a hot supply.

### Where this appears, and which table it belongs to

On the appliance’s own display. Photograph it before you cut the power: a display that has been cleared has taken the evidence with it, and there is no way to ask the machine for it again. Then check the model, because this make changed hands in 2016 and the two generations share no code string. The same characters mean different things on a Classic ERC oven, an ER-series range and a Modernist induction cooktop, and a meaning read off the wrong table is worse than no meaning at all.

### Which machines this one applies to

DW20.1 platform, 3000-series. The same number on a different appliance of this make is a different page and often a different repair, which is why this archive is organized by appliance rather than by number. This maker documents codes on 8 of the appliance types this site publishes — cooktop, dishwasher, dryer, microwave, oven, range, refrigerator and washer — and publishes none at all for commercial line, freezer, microwave, oven, range, range hood and refrigerator. Those appliances have symptom pages here and no code pages, which is the honest answer rather than borrowing a table from the machine next door.

### What to do about it

- Check whether the supply to the machine is hot or cold, because a cold fill changes what this means entirely.
- Run a hot program and feel the door glass at the end — a machine that never warms has an element or a thermistor problem rather than a program one.
- Have the element and thermistor measured; both are ordinary parts on this platform.

### Where this goes next

The job this usually becomes is [diagnostic visit](/services/diagnostic-visit/), and that page carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes, reminders and settings rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call [(305) 363-1406](tel:+13053631406) and describe what the panel is doing before booking anything.

DW20.1 platform, 3000-series

What this one means

What F1 means on this make

The control watches the water climb during the heating stage, and if it has not gained five degrees in ten minutes it abandons that stage and carries on with the program. On this generation there is no indication of it at the panel at all — the machine simply washes cold and you notice the dishes rather than the code. What it points at is the element, the thermistor reading for it, or a machine being fed cold water where it expects a hot supply.

Where this appears, and which table it belongs to

On the appliance’s own display. Photograph it before you cut the power: a display that has been cleared has taken the evidence with it, and there is no way to ask the machine for it again. Then check the model, because this make changed hands in 2016 and the two generations share no code string. The same characters mean different things on a Classic ERC oven, an ER-series range and a Modernist induction cooktop, and a meaning read off the wrong table is worse than no meaning at all.

Which machines this one applies to

DW20.1 platform, 3000-series. The same number on a different appliance of this make is a different page and often a different repair, which is why this archive is organized by appliance rather than by number. This maker documents codes on 8 of the appliance types this site publishes — cooktop, dishwasher, dryer, microwave, oven, range, refrigerator and washer — and publishes none at all for commercial line, freezer, microwave, oven, range, range hood and refrigerator. Those appliances have symptom pages here and no code pages, which is the honest answer rather than borrowing a table from the machine next door.

What to do about it

Check whether the supply to the machine is hot or cold, because a cold fill changes what this means entirely.

Run a hot program and feel the door glass at the end — a machine that never warms has an element or a thermistor problem rather than a program one.

Have the element and thermistor measured; both are ordinary parts on this platform.

Where this goes next

The job this usually becomes is diagnostic visit, and that page carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes, reminders and settings rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call [(305) 363-1406](tel:+13053631406) and describe what the panel is doing before booking anything.

---

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