Thermor Appliance Repair Service
Specialist repairs using genuine Thermor spare parts
Heating
Gas Safe registered engineers for Thermor electric water heater, boiler, cylinder water heater, gas water heater, heat radiator, heat panel and bathroom radiator. Fault diagnosis, part replacement and annual servicing across Cambridgeshire.
No hot water or heating?
Thermor heating breakdowns repaired fast by Gas Safe engineers. Available seven days a week across Cambridgeshire.
Heating
Professional Thermor cylinder water heater and gas water heater repair service in Peterborough. Certified technicians with genuine spare parts and a written warranty.
No hot water or heating?
Thermor heating breakdowns repaired fast by Gas Safe engineers. Available seven days a week across Cambridgeshire.
Heating
Professional Thermor heat radiator and heat panel repair service in Peterborough. Certified technicians with genuine spare parts and a written warranty.
No hot water or heating?
Thermor heating breakdowns repaired fast by Gas Safe engineers. Available seven days a week across Cambridgeshire.
Heating
Professional Thermor bathroom radiator repair service in Peterborough. Certified technicians with genuine spare parts and a written warranty.
No hot water or heating?
Thermor heating breakdowns repaired fast by Gas Safe engineers. Available seven days a week across Cambridgeshire.
Climate Control
F-Gas certified engineers for Thermor air conditioning, cassette ac and ducted ac. Installation, fault diagnosis and refrigerant handling across Cambridgeshire.
Air conditioning not cooling?
Thermor climate control repairs by certified engineers. Same-day response available across Cambridgeshire.
Climate Control
Professional Thermor ducted ac repair service in Peterborough. Certified technicians with genuine spare parts and a written warranty.
Air conditioning not cooling?
Thermor climate control repairs by certified engineers. Same-day response available across Cambridgeshire.
Renewable Energy
MCS-accredited installation and repair for Thermor heat pump. Heat pump diagnostics, refrigerant handling and efficiency optimisation.
Heat pump underperforming?
Specialist Thermor renewable energy engineers. MCS-accredited service across Cambridgeshire.
Why Thermor Appliances Need Specialist Repair
Thermor appliances incorporate advanced proprietary systems that require certified engineers with brand-specific training to diagnose and repair correctly.
Thermor appliances use integrated electronic diagnostics. Our engineers connect directly to Thermor control boards using brand-specific tools to read fault codes and pinpoint issues accurately.
Every repair uses genuine Thermor spare parts sourced directly from authorised distributors. Original components ensure compatibility, performance and longevity — backed by a manufacturer warranty.
Thermor appliances must meet strict UK safety regulations. Our certified engineers follow Thermor service procedures and test every repair to BS EN standards before sign-off.
Many Thermor appliances feature Wi-Fi connectivity and smart home integration. Our engineers can diagnose firmware issues, reset connectivity modules and restore remote control functionality.
Common Thermor Error Codes
What does error code W.28 mean on a Thermor heat pump water heater?
Error W.28 indicates the automatic defrost cycle is not functioning correctly. Check that airflow to the unit is not obstructed and the room temperature is within operating limits. If the error persists, contact a qualified engineer to inspect the defrost system.
What does error code Err10 mean on a Thermor towel rail?
Error Err10 indicates a communication fault between the motherboard and thermostat control. Power cycle the unit by switching off at the mains for 2 minutes. If the error persists, contact your installer or a qualified engineer.
What does error code Err 01 mean on a Thermor electric water heater?
Error Err 01 on Thermor Duralis models indicates the battery powering the ACI Hybrid anti-corrosion circuit is no longer effective. Wait for 2 complete off-peak heating cycles (approximately 16 hours) for the battery to fully charge. If the error persists, the thermostat assembly may need replacement.
What does error code Err04 mean on a Thermor towel rail?
Error Err04 indicates the presence/absence detector has a connection or operation fault. This only applies to towel rails with motion sensors. Ensure the detector lens is clean and unobstructed, then power cycle the unit.
What does error code W.7 mean on a Thermor heat pump water heater?
Error W.7 indicates the tank has no water or there is an open connection in the ACI anti-corrosion circuit. Ensure the tank is filled with water and the water supply is connected. If the tank is full, have a qualified engineer inspect the ACI circuit, including AC connections, wiring, and water conductivity.
Frequently Asked Questions
What are the installation requirements for an ambient air heat pump water heater?
An ambient air heat pump water heater must be installed in an unheated, non-habitable, frost-free room with a minimum volume of 20 cubic metres. The room temperature should remain between 5°C and 35°C throughout the year. Suitable locations include garages, utility rooms, or cellars.
What heating modes are available on Thermor towel rails?
Thermor towel rails typically offer Comfort mode for when you are present, a reduced temperature mode for when the room is unoccupied (recommended for absences over 2 hours), and Frost Protection mode set at approximately 7°C for extended absences.
How does the Boost function work on Thermor heat pump water heaters?
The Boost function provides hot water on demand by defining authorisation ranges for heat pump and electric element startup. Options include 24-hour operation or programmed time slots. This allows rapid water heating when you need extra hot water, even in economy mode.
What should I do with my heat pump water heater during an extended absence?
For absences of less than two months, close the water inlet valve at the safety group. For absences longer than two months, close the water inlet, drain the tank completely, and ideally allow it to dry out. This prevents stagnant water issues and protects the system during extended periods without use.
How do I clean the evaporator on my Thermor heat pump water heater?
The evaporator should be cleaned annually. Use compressed air to blow debris from the fins, a vacuum cleaner with a soft brush attachment, or a dedicated evaporator cleaning spray. Take care as the aluminium fins are sharp. Always disconnect electrical power before performing any maintenance.
Areas We Cover in Cambridgeshire
Thermor appliance repair service across the ten largest towns in the county
Other Groupe Atlantic Brands
Appliances from other brands in the same corporate group are also repaired
Book a Thermor Repair
Specialist Thermor engineers. No-obligation quote.