Alarm code4024
Selected by PAR 1624 START ENABLE 4 alarm occurs when the RUN Enable condition is not satisfied. The manual's first action is: “Check 24 Volts on RBCU unit”
- Model
- ABB ACH550
- Display shows
- 4024
- Type
- Alarm code
- Source
- Manual p. 75
What 4024 means
Selected by PAR 1624 START ENABLE 4 VIBRATION SWITCH ... LOW SUCTION PRES p. 75
Common causes
- Run Enable condition is not satisfied. p. 75
- Bad 24v supply p. 75
- Bad digital input 24 V common is not tied to Digital input common on bypass when using external 24 v supply p. 75
What to do
- Check 24 Volts on RBCU unit p. 75
- Check for 24 volts on respective DI when condition is satisfied p. 75
- Check Parameter 0103 For status of digital input p. 75
Before you service the product, read the safety instructions in the manual p. 2.
If 4024 is still not resolved
- contact the factory or your local Authorized Service Center for repair or replacement. p. 2 “Never attempt to repair a malfunctioning ACH550; contact the factory or your local Authorized Service Center for repair or replacement.”
This page summarises what the manufacturer’s manual says about 4024; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with ABB. Found a mistake? Report an error.