EA and RESET button and fault indicator LED are flashing. During operation: flame not detected.
Step | Check | Action | |
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1 | Is a burner flame visible? | yes: | go to step 5 |
no: | go to step 2 | ||
2 | Is the gas cock turned on? | yes: | go to step 3 |
no: | ▶ Open the gas valve. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 3 |
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3 | Is there air in the supply pipe? | yes: | ▶ Vent supply pipe. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 4 |
no: | go to step 4 | ||
4 | Natural gas models : measure gas supply at gas valve. Is the pressure OK according to technical data? | yes: | ▶ Is correct code plug fitted? If not, fit correct code plug (see Appendix). ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 5 |
no: | ▶ Check working pressure at appliance to eliminate pipe work problems. ▶ Check pressure at the building supply pressure regulator, inform gas company if outside correct range. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 5 |
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LPG models: is the flow rate of the gas supply to the appliance correct? | yes: | go to step 5 | |
no: | ▶ Is there enough gas in the supply cylinder? ▶ Is there air in the supply pipe? ▶ Is the supply pressure OK? (if supply pressure outside correct range, inform gas supplier) ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 5 |
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5 | ▶ Switch OFF the appliance. ▶ Disconnect the boiler power connection. Is the earth connection correct? | yes: | ▶ Reconnect the appliance power connection. ▶ Switch ON the appliance. EA? go to step 6 |
no: | ▶ Correct the electrical connection. ▶ Reconnect the appliance power connection. ▶ Switch ON the appliance. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 6 |
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6 | Is the condensate trap blocked? | yes: | ▶ Clean out condensation trap discharge pipe. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 7 |
no: | go to step 7 | ||
7 | Is diaphragm in air/gas manifold fitted correctly (see installation instructions)? ▶ Open air/gas manifold. ▶ Check diaphragm for correct orientation, soiling and splitting. Is diaphragm OK? | yes: | ▶ Close air/gas manifold (see installation instructions). go to step 8 |
no: | ▶ Insert diaphragm in the fan intake tube as per installation instructions so that the flaps open upwards. ▶ Close air/gas manifold (see installation instructions). EA? go to step 8 |
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8 | Check the gas valve. ▶ Switch OFF the appliance. ▶ Un-plug the connectors from the gas valve. ▶ Measure the gas valve coils I and II electrical resistance. coil I : R = 170 40 ? coil II : R = 400 50 ? ▶ Remove gas valve and check inlet filter for blockage. | yes: | ▶ Reconnect the connectors. ▶ Switch ON the appliance. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 9 |
no: | ▶ Turn off gas valve. ▶ Disconnect the boiler power connection. ▶ Change the gas valve. ▶ Open the gas valve. ▶ Reconnect the connectors. ▶ Reconnect the appliance power connection. ▶ Switch ON the appliance. ▶ Check appliance for leaks. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 9 |
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9 | Problem with flue? ▶ Check CO 2 level in combustion air in the flue (with outer casing fitted). Is the CO 2 level above 0.2%? ▶ Perform a fan pressure test (as described in the installation manual). ▶ Open up heat exchanger - is it dirty? | yes: | ▶ Check flue installation for agreement with the instruction manual. Then: ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 10 |
no: | go to step 10 | ||
10 | Is flue gas CO 2 level incorrect? | yes: | ▶ Adjust to correct level. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 11 |
no: | go to step 11 | ||
11 | ▶ Select in the second service level the service function 8.F (Permanent ignition). ▶ Select the value 1 and store. Check the permanent ignition at the electrodes (without gas). Is it OK? | yes: | ▶ Select the value 0 and store. ▶ Exit the service function. go to step 12 |
no: | ▶ Select the value 0 and store. ▶ Exit the service function. go to step 15 |
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12 | Ignition cable connected to ignition electrodes? | yes: | go to step 13 |
no: | ▶ Reconnect lead. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to 13 |
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13 | Ignition cable connector engaged in control panel? | yes: | go to step 14 |
no: | ▶ Switch OFF the appliance. ▶ Engage ignition cable connector in control panel. ▶ Switch ON the appliance. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 14 |
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14 | Is the ignition cable damaged? | yes: | ▶ Switch OFF the appliance. ▶ Change the ignition cable. ▶ Switch ON the appliance. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 15 |
no: | go to step 15 | ||
15 | Electrode assembly defective? ▶ Switch OFF the appliance. ▶ Remove electrode assembly. Electrode assembly burnt out or cracked? | yes: | ▶ Replace electrode assembly. ▶ Switch ON the appliance. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 16 |
no: | ▶ Refit electrode assembly. ▶ Switch ON the appliance. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 16 |
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16 | ▶ Switch OFF the appliance. ▶ Disconnect the boiler power connection. ▶ Check if the 20-pin connector lead assembly is damaged. | ▶ Change the connector lead assembly. ▶ Reconnect the appliance power connection. ▶ Switch ON the appliance. ▶ Press the reset button for 3 seconds and release it. After releasing the appliance re-starts. EA? go to step 17 |
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17 | The PCB is damaged. | ▶ Make a note of the altered service settings. ▶ Switch OFF the appliance. ▶ Disconnect the boiler power connection. ▶ Change PCB control board. ▶ Reconnect the appliance power connection. ▶ Switch ON the appliance. ▶ Restore service settings previously noted down. |