Eastbound trains on the East-West MRT line skipped Dover station on Wednesday morning, 3 July, because of a faulty platform screen door.
The station manager was suspended with immediate effect after he made an error that allowed the train to move off from Ang Mo Kio station with its door open.
The North-South Line was hit by a platform screen door fault that lasted more than two hours on Thursday during the evening peak hour.
The malfunctioning doors on the Downtown Line's Botanic Gardens station have been fixed, but cause of the glitch remains unknown.
Downtown Line MRT services were delayed from the start of service up to lunchtime yesterday due to a platform door fault at Botanic Gardens.
The signalling fault was caused by a faulty platform door at Botanic Gardens station, The Straits Times has contacted SBS Transit for more information.
A problem with one of the platform screen doors at Bedok station caused a delay on the East-West Line on Monday morning.
A faulty platform screen door at Sixth Avenue Station along the Downtown Line was caused by a bolt, which had loosened over time, said LTA and SBS Transit.
Commuters tweeted that they had to wait up to 20 minutes for their train and large crowds were amassing along the line at stations like Bukit Panjang.