Taken from the following: https://www.wascomat.net/pdfs/487032981.pdf
This is for a different model, but the codes are likely the same.
It is related to non-ignition of gas. You may need to switch on your gas supply, or service your ignition coil.
Resetting gas error
When the ignition control fails to detect a flame a error code E14 is displayed. When this condition occurs, the gas valve is shut off and the ignition control must be reset manually.
Open the operating panel and press the gas reset button on the back of the user module board for one second.
See the picture of the gas reset button section 21
NOTE! When resetting the system the dryer must operate on a program with heat and when the heat indicator is on.
Error code 14 is a normal occurrence when first starting up a dryer, since air in the gas line must be purged.