Prestige 120 User's Guide download pdf (Page 42)

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664Y3300

mCBA pARAmETERS FoR THE SpECIALIST

Codes Description of the fault Remedying the fault

Short circuit NTC 3

- Check the connection of the NTC 3 sensor

- Check the wiring of the NTC 3 sensor

If the problem persists, replace the NTC 3 sensor

NTC 1 connection open

- Check the connection of the NTC 1 sensor

- Check the wiring of the NTC 1 sensor

If the problem persists, replace the NTC 1 sensor

NTC 2 connection open

- Check the connection of the NTC 2 sensor

- Check the wiring of the NTC 2 sensor

If the problem persists, replace the NTC 2 sensor

NTC 3 connection open

- Check the connection of the NTC 3 sensor

- Check the wiring of the NTC 3 sensor

If the problem persists, replace the NTC 3 sensor

Internal error

If the problem persists after two “RESET” attempts,

replace the MCBA

Flue gas temperature too high (NTC 5)

- Check the connection of the NTC 5 sensor

- Check the wiring of the NTC 5 sensor

If the problem persists, replace the NTC 5 sensor

Error during reading of the parameters

Press RESET

If the error persists, replace the MCBA

Fan power supply problems

- Check the supply voltage of the MCBA.

If you detect no problems with it, replace the fan

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Prestige 120 User's Guide Page 42