Troubleshooting
6 | Troubleshooting |
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Fault Indication | Possible Cause | Check | |||
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E9 |
| Shut down by the temperature limiter | • 1. Check position of heating NTC | ||
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| (over temperature). | • 2. Check temperature limiter, cables | ||
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| • 3. Check system with air, air vent | ||
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| • 4. Bleed air from system. | ||
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EA |
| No Flame detected (no ignition). | • | 1. | Check gas inlet pressure, gas |
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| type, air inside gas pipe | |
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| • 2. Check flame, ignition | ||
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| • 3. Check burner pressure, injectors | ||
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| • 4. Check ionisation sensor, cable | ||
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| • 5. Check electronic unit1). | ||
F7 |
| "false flame" (error during self check of | • 1. Check for moisture on the | ||
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| electronic). |
| Electronics | |
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| • 2. Check cables, sensor contacts | ||
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| (corrosion) | |
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| • 3. Check flame inside Burner | ||
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| chamber | |
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| • 4. Check electronic unit1). | ||
E0 |
| Shut down because of low voltage. | • 1. Check power supply | ||
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| • 2. Check electronic unit1). | ||
F0 |
| Internal error in the electronic unit. | • 1. Check electronic unit connections | ||
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| and wiring. | |
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| • 2. Replace electronic unit. | ||
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C4 |
| Fan not working | • 1. No power to fan, check for 115 | ||
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| volts at fan | |
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| • 2. Check wire connections. | ||
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C6 |
| Shut down by pressure switch. | • | 1. | Blocked vent |
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| • 2. Fresh air supply inadequate | ||
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| • 3. Silicone tubes from pressure | ||
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| switch not connected - clear or clear | |
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| and black | |
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| • 4. Check wire and connection. | ||
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E2 |
| Heating - NTC defect (no function) | • | 1. Check heating - NTC | |
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| • 2. Check cable (opened, short) | ||
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| • 3. Check electronic unit1). | ||
A7 |
| Domestic hot water - Tank NTC defect | • 1. Check domestic hot water - NTC | ||
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| (no function) | • 2. Check cable (opened, short) | ||
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| • 3. Check electronic unit1). | ||
AA |
| Flow reduced | • 1. Check heat exchanger - flush or | ||
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| descale if necessary. | |
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LED or LCD of the appliance doesn't | No voltage supply, fuse blown, | • 1. Check voltage supply | |||
start up, no function. | transformer etc. defect | • | 2. Check fuse | ||
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| • 3. Check electronic unit1). | ||
Noise; boiling noise (over heating), no | Low circulation, air inside installation, | • 1. Check air in system, air vent | |||
correct function. | bad heat transfer. | • 2. Check heating circulation | |||
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| • 3. Check heat exchanger | ||
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| • 4. Check gas type, injectors, gas | ||
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| valve. | |
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Table 16
32 | 6 720 607 909 |
