CDA HCG 740 Users operating instructions User Manual download pdf (Page 40)

Failure modes on display of electronic chamber thermostat:

If the following message appears on the electronic thermostat display:

_ _ 0 Thermocouple or chamber probe cut off.

-Check connection between thermocouple and electronic thermostat

-Change chamber probe

_ _ 1 NTC open.

-Change electronic thermostat.

_ _ 2 Selector potentiometer 30-270ºC broken.

- Change electronic thermostat.

_ _ 3 Selector potentiometer 100ºC broken.

- Change electronic thermostat.

Failure modes in core probe thermostat display:

If the following message appears on the electronic thermostat display:

“_ _ _” Short-circuited core probe.

“EEE” Core probe cut or not connected.

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CDA HCG 740 Users operating instructions User Manual Page 40