What Er:22 Means
Er:22 on a Bosch front-load washer means the control could not synchronise to the mains frequency. The two service documents point in slightly different directions, which is useful: the Nexxt table names a faulty control module, while the Vision manual names a weak power supply and tells the technician to check it. Between them the message is that the control is not getting a clean, stable supply to lock on to.
Common Causes of Er:22
- Weak or unstable mains supply at the outlet
- Shared or overloaded circuit
- Control module fault in the supply-sensing circuit
🔧 One Safe Check You Can Try
Check whether the washer is on an extension lead, sharing a circuit with a heavy appliance, or plugged into an older outlet. The Vision manual's first remedy is the power supply, so household wiring is genuinely worth ruling out.
⚠ Why You Shouldn't Go Further Than That
- One of the two documented causes is not inside the machine at all, so opening it spends the effort in the wrong place.
- Measuring supply quality means testing under load, which is electrician work rather than appliance work.
- Replacing a control module when the supply was weak puts a new board on the same unstable circuit.
- A washer run on marginal supply draws more current through its motor, which adds heat where you do not want it.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.