Fagor HCG-10/21 - Frequency Inverter Failure Modes T-083002; Single Pulse of Light in Red LED D21; Two Pulses of Light in Red LED D21; Three Pulses of Light in Red LED D21

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Frequency inverter failure modes T-083002:
1. Single pulse of light in red LED D21(fig 47).
Effect: Oven does not ignite. Reset button off.
Possible causes:
- 1.1 Signal cable between frequency inverter and fan (T-083000) is broken.
- (Check connector wires J2 of frequency inverter) connection 1-3
- 1.2 Broken fan card.
- 1.3 Broken frequency inverter
2. Two pulses of light in red LED D21. (fig 47)
Effect: Oven does not ignite. No flame detection. Reset button on.
Possible causes:
2.1 There is not gas supply.
- 2.2 Flame detector wires broken or with loose contacts.
- 2.3 Faulty INECO combustion control box.
2.4 Faulty spark plug wire or loose contact.
2.5 Spark plug not at correct distance to burner (3-4mm)
2.6 Faulty convection gas valve.
2.7 Air leak in rubber tube from blower to gas valve.
3. Three pulses of light in red LED D21 (fig 47)
Effect: Oven does not ignite. Reset button off.
Possible causes:
- 3.1 Speed detector cable between frequency inverter and fan is broken.
- (Check cables on connector J2 of frequency inverter) Connection 2-4
- 3.2 Faulty fan card.
- 3.3 Faulty frequency inverter.
- 3.4 Blower does not operate.
4. Four pulses of light on red LED D21. (fig 47)
Effect: Over operates. The oven reached temperature slowly because the blower does not reach the
maximum speed.
Possible causes: