Montpellier E05 fridge freezer: what it means & what to try

What E05 actually means

The fridge freezer has lost a reliable reading from one of its internal temperature sensors — on most models in this range, the defrost sensor on the freezer evaporator.

The control board constantly reads a small sensor that tells it how cold the freezer evaporator is, so it knows when to run a defrost cycle. If that reading goes out of range or disappears altogether, the board flags E05 and falls back on a fixed timed routine. The appliance will often carry on cooling, but defrosting may be poorly controlled, so you can get ice build-up and a gradual loss of performance.

What E05 looks like on a Montpellier fridge freezer

Most people find this page having searched for what the machine is doing rather than the code itself. On a Montpellier fridge freezer, E05 usually shows up as one or more of these:

Not heating the water
Washing coming out cold
Cycle takes far longer than it should
Not cooling
Freezer not freezing
Ice building up at the back
Food going off in the fridge
Running constantly and never getting cold

Recognise any of those? That is this fault, and the rest of this page explains what causes it and what you can check yourself.

What usually causes it

A loose or corroded plug where the sensor connects to the control board
A failed sensor giving a false reading
Moisture or frost getting into the sensor connection
A faulty main control board (less common)

What you can safely check yourself

Work through these in order. Anything beyond this — panels off, testing parts, anything to do with the wiring — is an engineer's job, and not one to attempt with the machine plugged in.

Turn the appliance off at the wall for a minute, then back on — some models clear a one-off glitch this way
Check the doors are closing and sealing properly, as warm damp air causes heavy frosting
Look for a thick build-up of ice around the back wall inside the freezer, which points to a defrost problem
Make sure food or packaging is not blocking the vents inside the compartments
Note the temperature the freezer is actually holding, so you can tell the engineer

Which Montpellier models show E05

E05 means the same thing on all 5 of these models. If yours is not listed, the explanation above still applies — the code is set by the control board, not the model number.

CSBYS500BX · CSBYS600DS · CSBYS600DX · MFF150W · MIFF730FF

Common questions about Montpellier E05

What does E05 mean on a Montpellier fridge freezer?

The fridge freezer has lost a reliable reading from one of its internal temperature sensors — on most models in this range, the defrost sensor on the freezer evaporator. The control board constantly reads a small sensor that tells it how cold the freezer evaporator is, so it knows when to run a defrost cycle. If that reading goes out of range or disappears altogether, the board flags E05 and falls back on a fixed timed routine. The appliance will often carry on cooling, but defrosting may be poorly controlled, so you can get ice build-up and a gradual loss of performance.

Can I fix Montpellier E05 myself?

There are 5 checks you can safely do yourself first.

Turn the appliance off at the wall for a minute, then back on — some models clear a one-off glitch this way.
Check the doors are closing and sealing properly, as warm damp air causes heavy frosting.
Look for a thick build-up of ice around the back wall inside the freezer, which points to a defrost problem.
Make sure food or packaging is not blocking the vents inside the compartments.
Note the temperature the freezer is actually holding, so you can tell the engineer.

This one usually needs an engineer once you have tried them.

How much does it cost to repair Montpellier E05?

£66 including VAT for an engineer to come out and diagnose it, or £84 in total including VAT if it is put right on the visit and no parts are needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.

Tried the checks and it's still showing E05?

This one usually needs an engineer once you have tried the checks above. Then it wants someone who can open it up.

What it costs, before you call: the price is the same whatever the fault turns out to be — £66 including VAT for an engineer to come out and diagnose it, or £84 in total including VAT if it is put right on the visit and no parts are needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.

Our own engineers, not a call centre. We cover Nottinghamshire, Derbyshire and Leicestershire — most fridge freezer faults are seen same day or next day.

Call 0115 648 0929 Book online — postcode and number is all we need

Outside our area? The explanation above still stands — take it to a local engineer and tell them the code. Knowing it saves them time and you money.

Other Montpellier fridge freezer codes

All Montpellier fault codes and repairs →

What this looks like when it happens

Repairs we cover near you

Written by the engineers at ASAP Repairs, 0115 648 0929. We repair these machines for a living in Nottinghamshire, Derbyshire and Leicestershire.

Montpellier E05 error — fridge freezer