Disclaimer
Want to make your hot air heating system more energy efficient? This guide covers what homeowners need to know about boosting energy efficiency in hot air heating systems: practical tips, maintenance advice, and upgrade options to help you save money and reduce your carbon footprint. At 0800 Homefix, we specialise in optimising heating systems to ensure they deliver maximum efficiency and comfort for your home.
When your Potterton boiler displays the E152 fault code, it signifies a hot water NTC (Negative Temperature Coefficient) sensor fault. The E152 is a type of hot water sensor fault and is one of the most common Potterton boiler faults, affecting models such as the Titanium Combi System Boiler, Promax, Gold, and Performa. This sensor is essential in regulating water temperature within the domestic hot water (DHW) circuit. If it fails, your boiler may stop providing hot water entirely or operate erratically. E152 is a typical Potterton boiler fault, and understanding common Potterton boiler faults like this is crucial for effective maintenance and timely repair. At 0800 Homefix, our experienced engineers are equipped to diagnose and fix sensor-related boiler faults quickly and safely.
What Is the Potterton E152 Fault?
The Potterton E152 error code is one of the boiler fault codes commonly seen in a common Potterton boiler, typically occurring when the DHW NTC sensor fails to read the water temperature correctly. It may also be caused by a wiring fault, a low boiler pressure, or a faulty diverter valve. This fault is especially common in models like the Potterton Assure Combi, Gold Titanium Combi System, and Ultra Gold Titanium Combi.
Common Causes of Potterton E152:
Faulty domestic hot water sensor (DHW NTC)
Broken or corroded wiring between the sensor and the printed circuit board (PCB)
Sludge build-up affecting primary water circulation or flow switch
Low system pressure or primary system water pressure
Frozen condensate pipe or flue thermostat sensor tripped
Gas valve connection fault or gas supply issue
Sensor misreading due to negative temperature coefficient variance
Central heating return thermistor fault
Heating return thermistor fault
Temperature coefficient NTC fault or issues with the temperature coefficient NTC sensor
PCB fault (printed circuit board fault)
Possible wiring fault affecting sensors or components
DHW NTC sensor fault (domestic hot water NTC sensor)
Flue thermistor fault
Pre circulation fault
Primary water circulation fault
Outdoor sensor error
Communication issues with the room controller
False flame detection
Flame failure
Gas valve wiring fault
Time gas valve issues (e.g., elapsed time gas valve open without gas)
Safety error (system safety lockout or alert)
Low voltage affecting electrical components or sensors
Temperatures drop (cold weather causing system issues)
Broken seals leading to pressure loss
Old boiler (increased risk of recurring faults)
Consider a replacement boiler or new boiler for persistent or recurring faults
Similar faults may occur in a tank boiler
Issues can also be seen in promax combi, promax combi system, and combi system and store models
Related error codes: E83, E84, E85, E86
Troubleshooting the E152 Error Code
1. Check System Pressure
Inspect the pressure gauge on your boiler, and perform a water pressure test to ensure the system is within the correct range. If it’s too low, use the filling loop to bring it to the recommended level, typically around 1.5 bar. Low boiler pressure can disrupt sensor function and circulation.
2. Inspect the DHW NTC Sensor
Look for signs of corrosion, limescale, or physical damage, as these may indicate a DHW NTC sensor fault. Faulty temperature sensors should be replaced immediately by a Gas Safe engineer.
3. Test Wiring and PCB
Loose, burnt, or broken wiring may be causing communication failure between the NTC sensor and the PCB. Faults in the printed circuit board itself may also trigger error codes like E152.
4. Examine Pump and Flow Switch
A probable pump jammed or heating flow switch error can prevent water from circulating properly, leading to false temperature readings and boiler shutdown. Check for any blockage or sludge build-up in your system.
5. Check for Other Errors
Other faults such as E83, E84, E85, or E86 could indicate deeper issues within the heating circuit or flue system. Additionally, verify the power input some models may throw this error with a wrong power supply Hz input.
Preventing Repeated Sensor Faults
-
Schedule annual servicing for your Potterton boiler
-
Ensure all sensors, including the central heating thermistor sensor and DHW NTC, are cleaned and tested
-
Bleed radiators and inspect the condensate pipe during cold weather
-
Use system cleansers to prevent sludge build-up
-
Monitor boiler pressure, and test the differential water flow switch regularly
FAQs
What does the Potterton E152 error code mean?
It indicates a fault in the hot water NTC sensor, which reads water temperature. Faulty readings can shut down the hot water supply.
Can I reset my boiler to clear the E152 error?
You may try a reset, but if the issue persists, it’s essential to have a qualified engineer diagnose the fault.
Is E152 common in Potterton boilers?
Yes, especially in older models or those without regular boiler maintenance.
Could this fault impact my central heating too?
While E152 primarily affects hot water, interconnected faults could influence heating system performance as well.
Can 0800 Homefix help with this issue?
Absolutely. We handle all Potterton boiler error codes, including sensor faults like E152, with expert precision.
Need a professional to fix your Potterton E152 fault?
Call 0800 Homefix – your trusted partner for safe and efficient boiler repairs across all Potterton models.
For more detailed Potterton official support, the Worcester Bosch website (which owns Potterton) also provides boiler manuals and guidance:
https://www.worcester-bosch.co.uk/support