Genuine OEM Heating Element Assembly – Espresso Coffee Machine Spare Part
Restore full heating performance and reliable coffee extraction with this genuine DeLonghi Thermoblock Boiler Generator Heater Assembly (Part Number: 5513227901).
This OEM thermoblock is designed for DeLonghi automatic espresso machines and super-automatic coffee makers. It ensures stable water heating, consistent brewing temperature, and reliable steam generation for espresso, cappuccino, latte, and milk-based drinks.
If your machine is producing cold coffee, weak steam, or unstable temperature, replacing the thermoblock is often the correct long-term repair solution.
🔧 Product Overview
The thermoblock boiler is a key heating component inside DeLonghi espresso machines. It rapidly heats water to the correct temperature required for brewing and steaming.
Over time, scale buildup, electrical wear, or internal heating element failure can cause poor performance or complete heating failure. Replacing the thermoblock restores safe and reliable operation.
🔍 How to Find the Correct Boiler for Your Machine
To ensure you order the correct thermoblock boiler for your DeLonghi machine, please check the identification code stamped on the base plate of the existing boiler.
Look for the code Ø5 stamped near the centre pipe connection area of the boiler. ( Check 4th Picture )
If your boiler has the Ø5 marking, then this 5513227901 thermoblock is the correct part for your machine.
⚠️ If you cannot find any code stamped on the boiler, it typically indicates the unit is Ø6 type.
If your boiler is Ø6, you will need a different part number:
ESAM6700 – PrimaDonna Avant Automatic Cappuccino Machine
Perfecta Series
ESAM5500B – Perfecta Automatic Cappuccino Machine
ESAM5500T – Perfecta Automatic Cappuccino Machine
ESAM5450 – Perfecta Cappuccino Touch
ESAM5600S – Perfecta Cappuccino Slim
Built-In Models
EABI6600 – Built-In Automatic Coffee Centre
✔ And many other compatible DeLonghi automatic espresso machines
⚠️ Important Compatibility Note
Please ensure your machine model number matches before purchasing. If unsure, contact us with your model details and we will confirm compatibility.
⚠️ Safety Warning
This is an electrical component designed for use in coffee machines operating on 230V mains power.
🔌 Always disconnect power before installation or servicing
⚠️ Installation should be carried out by a qualified technician or experienced person
⚡ Risk of electric shock if handled while powered
🔧 Incorrect installation may damage the machine or electronics
🚫 Do not attempt repair if unsure of electrical procedures
⚠️ Common Symptoms This Part Fixes
Coffee machine not heating
No hot water output
Weak or no steam pressure
Cold or lukewarm coffee
Temperature unstable during brewing
Internal boiler leakage
Steam function not working
Slow heating performance
Machine tripping during heating cycle
Thermoblock error or failure warning
Poor espresso extraction temperature
Milk frother not heating correctly
☕ Why Replace Your Thermoblock Boiler?
A faulty thermoblock can severely affect machine performance. Replacing it will:
Restore correct brewing temperature
Fix heating and steam issues
Improve coffee quality and consistency
Prevent further internal damage
Extend the lifespan of your coffee machine
🔧 This thermoblock contains two internal heating elements, and each element typically reads approximately 82.5 ohms resistance when tested correctly. This is an important diagnostic indicator for technicians.
⚠️ In many cases, the smaller heating element fails first, causing the machine to produce lukewarm coffee even though it appears to operate normally.
This resistance pattern is commonly used by technicians to confirm thermoblock failure.
