Redring [E1] fault codewhat it means and how to fix it

Redring list E1 in the Selectronic Advanced self-help table as abnormal outlet sensor, the sensor is open-circuited or short-circuited, and pair it with the Start/Stop button light flashing twice. Their remedy is one line: contact Redring Support. It is worth understanding why the shower is so uncompromising about it. The Selectronic is a thermostatic shower in the electronic sense. It reads the incoming water temperature and the flow, decides how many heaters to switch on, and then checks the result with a thermistor in the outlet connector. That outlet reading is the one the whole appliance trusts. It is what holds the temperature you chose as the mains pressure wanders, and it is what triggers the over-temperature shutdown if the water heads towards scalding. A thermistor that reads open, infinite resistance, or short, zero, cannot be trusted for either job.

Redring’s table stops at the code and the instruction to contact them; it does not describe what the shower does next, and this page does not pretend it does. What follows from the design is that a shower without a trustworthy outlet reading should not be heating water, and whether or not yours still runs, the right response is not to make it. That is why there is no purge, no reset sequence and no owner remedy in Redring’s table.

The likely physical causes are a sensor lead pulled or chafed inside the unit, the outlet connector assembly failing, or corrosion at the plug on the board, and each of them is behind the cover of a hard-wired 40-amp appliance in a bathroom, which is exactly the work Redring assign to the qualified service representative with a capitalised instruction to isolate first. The one thing an owner can usefully do is a single power cycle at the isolator, because Redring give that as the answer to a display behaving erratically and a momentary glitch can latch a code.