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Erica DixonAug 11, 2025
What to do if the dryer does not switch towers in Sullair SD?
- BBelinda SalinasAug 11, 2025
If your Sullair Dehumidifier's dryer isn't switching towers, several factors could be at play. The inlet valve combination might not be opening or switching; in this case, check the electrical functioning of the solenoids and replace either the solenoid or the complete valve combination. Another reason could be that the PLC isn't functioning; check the PLC and the fuse in the control cabinet. The vessel might not be pressurized; check whether the blow-off valves are dirty and replace them if necessary, and check the electrical functioning of the solenoids, replacing either the solenoid or the complete valve combination. The regeneration orifice might be obstructed; clean or replace it.
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