Bosch Washer Er:07 Warns of Water Getting Hotter Without a Heating Command

What Er:07 means

Er:07 tells you the water in a Bosch front-loader warmed up although the control never asked for heat. The Nexxt and Vision service documents name the same two suspects: a heating element with current leaking to ground, or a relay on the board that has fused shut and keeps feeding the element. Bosch's repair advice is an insulation test on the element, then a new element or a new control board.

Common causes of Er:07

Heating element with current leaking to ground
Heater relay fused shut on the board, so the element stays powered
Board electronics unable to switch the heater off

✓ One safe check you can try

1. Flip the washer's breaker to off; using the panel buttons is not enough. 2. Prop the door open once the drum has cooled. 3. Skip any test cycle. 4. Call us and mention what you noticed, such as warm water in a cold program. A fused relay keeps power flowing to the element whatever program the display shows.

! Why to stop there

An element leaking to ground can energize the drum and cabinet.
Running the washer to confirm the code keeps a stuck heater powered and can scorch the tub and laundry.
Separating a leaking element from a fused relay takes an insulation test with a meter.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Washer codes

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Er:07Er:07 questions

Why must I use the breaker?

The relay that switches the heater is on the control board. If it is stuck, the heater stays powered even when the washer looks off, so only cutting the circuit makes the machine truly safe.

Could this start a fire?

A stuck heater is the sort of problem the control watches for, which is why it throws a code. We still treat it as high risk and ask that you keep the washer off until it is inspected.

Is a new element enough to fix it?

If the element is the culprit, yes. If the relay on the board is the cause, a new element will not help, so we test both before ordering parts.