Nibe VVM 320 - Additional Heat and Alarm Logging; Viewing the Alarm Log

Alarm 33-38 – sensor fault
Fault-tracing in accessory card.
Is the actual sensor correctly
connected?
YES
YES
YES
Are the sensor features OK,
measured from the connected
sensor cable in the accessory card
(AA5)? (See "Temperature
sensor" section.)
Are the characteristics for the
sensor OK, measured over the
sensor on the accessory card
(AA5)? (See "Data for
Temperature sensor" section.)
Check wiring and switches.
NO
NO
Defective sensor. Replace.
Action.
NO
Is the output voltage from the card
correct? (See "Data for
temperature sensor" section.)
Defective accessory card (AA5).
Replace.
YES
Check wiring and switches.
NO
51Chapter 6 | TroubleshootingNIBE™ VVM 320