Atag Boilers Fault Code | Possible Cause |
---|---|
10 | Outside sensor error |
20 | Flow sensor error |
40 | Return sensor error |
50 | DHW sensor error (iC-Range only) |
61 | Bus communication error |
78 | Water pressure out of range |
105 | Venting program active when power turned on or interrupted (runs approx. 7 mins) |
110 | Safety temperature exceeded |
111 | Maximun pressure exceeded |
117 | Pressure too high (> 3 bar) or pump pressure increase too high (iC & iS Range only) |
118 | Pressure too low (< 1 bar) or pump pressure increase too low) no pump detection) (iC & iS Range only) |
119 | Link on X2 position 4 and 5 missing |
129 | Fan error (fan does not start up) |
133 | No flame after 5 ignition attempts |
151 | Fan error (speed control is not achieved or is out of range) or control unit defective |
154 | Flow temperature increases to fast, return > flow |
- Home
- About Us
- Boiler Fault Finder
- Sequence of Boiler Operation
- Boiler Servicing Procedure
- General Fault finding (£)
- Burner Not Igniting (£)
- Boiler Shuts Down (£)
- Blocked plate exchanger (£)
- Domestic Hot Water Faults (£)
- Explosive Ignition (£)
- Faulty printed circuit board (£)
- Fan Problems (£)
- Noisy Heat Exchanger (£)
- Noisy Hot Water Flow Switches (£)
- Noisy Solenoid (£)
- Noisy Fan (£)
- Noisy Pump (£)
- Pressure Relief Valve Problems (£)
- Radiator Problems (£)
- System Component Testing
- Pumps
- Fans
- Thermistors
- Potentiometers (£)
- Thermostats (£)
- Air Pressure Switches (General)
- Domestic Hot Water Flow Switches (£)
- Primary Water Flow Switches (£)
- Domestic hot water and primary micro switches (£)
- Low water pressure switches (£)
- Solenoids & Moduregs (£)
- Actuator Heads (motorised valves) (£)
- Synchronous motors (within zone valves) (£)
- Y Plan (3 port mid-position valve) (£)
- S plan (HW zone valve and HTG zone valve) (£)
- Motorised valve heads (diverter valves) (£)
- Diverter valves (£)
- Room thermostats (£)
- Cylinder thermostats (£)
- Spark electrode(s) (£)
- Safe use of Multimeter Functions
- Electrical Safety Checks
- Service Engineer’s Toolkit
- Top Tips for the Heating Engineer
- Maximising boiler condensation operation
- Programmer and Time Switch Guides (£)
- Notching and Drilling (£)
- Asbestos (£)
- FAQ
- This MANUAL PDF (£)
- Boiler Manuals (£)
- Heating Engineers Templates (£)
- Error Codes
- Articles
- Directory
- My Account
- Contact Us