Name: Nibe VVM 320
Brand: Nibe
Rating: 5 (1 reviews)

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Alarm 2, 3, 6, 31 - sensor fault

Is the actual sensor correctly

connected?

YES

Is the wiring connector (W103)

correctly connected on base card

(AA2)?

Are the characteristics for the

sensor OK? (See "Data for

temperature sensor" section.)

Action.

Defective sensor. Replace.

Are the characteristics for the

sensor OK, measured from wiring

connector (W103) in the base card

(AA2)?

(See the "Wiring diagram"

section.)

Action.

Check wiring and switches.

Is the output voltage from the card

correct? (See "Data for

temperature sensor" section.)

Defective base card (AA2).

Replace.

YES

Check wiring and switches.

YES

NIBE™ VVM 320Chapter 6 | Troubleshooting50

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