CDA HCG 740 Users operating instructions Manuel d'utilisateur télécharger pdf (Page 38)

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:

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CDA HCG 740 Users operating instructions Manuel d'utilisateur Page 38