Question about Electronics - Others
These are all messages that follow overheating. E.nOH indicates that the heat sink has returned to the normal temperature range and the unit can be reset. E. OH indicates that the power module is over-temperature. This could be caused by insufficient air flow at the heat sink. That is caused by dust/dirt. The ventilator could be clogged or the ambient temperature is too high. E. OH2 indicates that the motor protection relay was tripped. Check for dust/dirt and clean any filters. Make sure that nothing is blocking the air flow around the unit.
KEB uses these error mesages on the CombiVert F6, https://www.keb.de/fileadmin/media/Manuals/f5/control/f5m/00f5mebk320.pdf .
I hope this helps.
Posted on Jun 01, 2019
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