Re: Hotpoint Aquarius DW20 Error lights 2 & 4
Suggests possible heater fault, quite common on these Indesit machines.
May be the heater itself but could be wiring or controls, testing with the correct equipment is the only way to determine the cause. Click the link in my sig to see if we have somone who can help.
Please remove the mains plug if you intend to go inside yourself.
Jim.
PS. Are you sure about that model number, not shown on my list, or given your username are domiciled a little south of the UK. 😉