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General| Boiler Type | Gas |
|---|---|
| Output | 24 kW |
| CH Output (kW) | 24 kW |
| Efficiency | 93% |
| ERP Rating | A |
| Weight | 32 kg |
| Fuel | Natural Gas |
| Warranty | 5 Years |
| Condensing boiler | Yes |
| Type | Combi |
| Mounting | Wall Mounted |
| DHW Output (kW) | 24 kW |
| Dimensions (H x W x D) | 700mm x 440mm x 355mm |
Troubleshooting steps for an absent, short-circuited, or faulty outside sensor.
Diagnosing flow sensor issues when the T1 value is out of range.
Procedure for a flue gas sensor fault, typically involving PCB replacement.
Steps to diagnose a return sensor error where T2 value is out of range.
Resolving issues related to no signal from the One controller or communication errors.
Troubleshooting for lack of pressure increase when the pump runs.
Diagnosing rapid temperature rises and potential sensor or circulation faults.
Diagnosing low water pressure or no pump kick issues.
Troubleshooting low ionisation current at maximum fan speed.
Diagnosing issues when the fan does not start up.
Troubleshooting ignition errors when no flame is detected.
Diagnosing issues with a blank display, potentially due to power or PCB faults.
Troubleshooting frost protection or pump PWM faults causing continuous running.
Diagnosing supply temperature changes indicating potential overheating.
Troubleshooting low system pressure below 1 bar with display warnings.
Diagnosing issues when no pressure increase occurs while pump is running.
Resolving pressure sensor issues due to resistance, open, or short circuits.
Diagnosing flow sensor T1 value errors and resistance checks.
Resolving return sensor T2 value out of range issues.
Troubleshooting absent, short-circuited, or faulty outside sensor conditions.
Troubleshooting flow switch open circuits and insufficient flow.
Resolving T3 hot water sensor issues for iC & iCE boilers.
Diagnosing fan speed outside the expected range.
Addressing overheat thermostat trip on Zone Manager ST2.
Resolving ATAG control wiring or zone assignment errors.
Troubleshooting failure to detect flame on the first ignition attempt.
Diagnosing failure to detect flame on the second ignition attempt.
Addressing no flame or low ionisation current during start attempts.
Troubleshooting flame detection before the gas valve opens.
Troubleshooting low system pressure below 1 bar with display warnings.
Resolving interruptions in the pump PWM signal.
Diagnosing high pump power consumption and overheating.
Resolving pump impeller stuck issues or debris causing overheating.
Managing and resetting the maintenance reminder notification.
Describes the operational states of the WILO pump using LED indicators.
Provides resistance values for Outside, Flow, Return, and DHW sensors at various temperatures.
Step-by-step guide for servicing the ATAG expansion vessel.
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