Light bulb Service washing machine Whirlpool, lock

In the washing machine, the Service lamp lights up, there may be several reasons, from burnt heater, to problems on the board. From the beginning it is necessary to carry out diagnostics of all peripheral devices and to check up, whether there is no breakage on heater, the drain pump and the engine, all should "ring".
In this washing machine, a short circuit occurred in the lock, which led to the failure of the triac of the ACS108 lock control.
After replacing triac ACS108 - the problem was solved.