Hyundai i20 heater only works on full power

Car: Hyundai i20
Variant: 1.2
Model Year: 2010
The heater in the cab only works on full power this only occured when the steering was repaired
Posted: Sep 30, 2021 (3 years ago)
Check the heater ballast resistor , connection , plug .May have been disturbed when working on car
Posted Sep 30, 2021 (3 years ago)
Will do as soon as possible thanks a lot
Posted Sep 30, 2021 (3 years ago)
Forgot to add ,

https://www.youtube.com/watch?v=9-QAv5JLaU0
Posted Sep 30, 2021 (3 years ago)

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