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FaultcodeCheck

Redring electric shower fault codes

Redring split every fault into what the owner should check and what the qualified service person should check, and they label the two. These pages follow their line rather than inventing one.

Where the code shows on a Redring

Most Redring electric showers do not display codes. The exception is the Selectronic, the thermostatic care shower, and its two generations show different things: the Selectronic Premier has a single-digit display that shows L, 1 to 9 or H for temperature, C in commissioning, a flashing o and t for an over-temperature shutdown and a t before its temperature-lock auto switch-off; the Selectronic Advanced shows the temperature in degrees and has a short code set, LP, E1, E2 and ot, each paired with a flash pattern on the Start/Stop button. Both are on their own pages here. The Glow Thermostatic, Redring’s push-button thermostatic shower for ordinary bathrooms, shares the Selectronic electronics and shows a flashing Ot with eight short bleeps for the same over-temperature shutdown, with the same Cooler-button purge; its guide publishes no LP or E codes. On the rest of the range the controls are a rotary temperature knob and, on most models, a rotary power selector marked with red graphics — three solid red lines meaning high power. Diagnosis is by symptom, and Redring structure their guides accordingly: a set of plain questions such as "Water too COLD", "Water too HOT" and "Water is dripping from the bottom of the shower", each answered with a numbered list of checks. Two details are worth knowing before you use those lists. Their temperature adjustments take effect slowly and Redring say to wait twenty to thirty seconds after each one before judging it. And the first stage of their over-temperature cut-out is reset by running the shower cold rather than by switching it off, which is not how the other brands in this category behave; the second stage, for an extreme temperature, switches off permanently and is replaced.

How to reset a Redring

There is no button sequence to learn on a Redring, but there is one reset that is specific to the brand and it catches people out because it is the opposite of the usual advice. Redring fit what they call a cyclic over temperature cut out, and their published instruction for restoring it is to allow cold water to run through the shower. Not to isolate it, not to wait for it to cool with the power off — to run it, cold, and let the flow bring the temperature down. That appears as step seven of the eight checks they give for a shower running cold. Beyond that, their instruction before any work inside the unit is unambiguous and is printed in capitals: switch off the electricity and the mains water supply at the local isolator before removing the cover to make checks. That warning heads their professional checklist rather than their owner list, which is Redring signalling that anything beyond the cover is not an owner job.

Most common Redring faults

The Redring codes people look up most.

Every Redring fault code

14 published codes. Filtering happens in the page — every one is in the HTML.

Showing 14 of 14 codes

Every published Redring fault code with its meaning and severity
CodeWhat it meansSeverity
Water too COLDRedring answer this with eight checks in a deliberate order, and the seventh is the one nobody guesses: run the shower cold to reset the cut-out.Get it checked
otOver Temperature Shutdown on a Selectronic: the water got too hot, so the shower stopped it. Purge it cold before restarting, and stop using the isolator to switch off.Get it checked
Shower cycles from HOT to COLDRedring name one cause: the temperature is set too high, so the thermal cut-out keeps operating. Their fix is a dial adjustment done slowly.Get it checked
Water too HOTRedring give six checks, and the one that distinguishes them is a filter inside the solenoid valve that other brands do not send you to.Get it checked
Water dripping from the bottom of the showerRedring attribute this to the safety pressure relief having operated, and they are clear it is a replacement part rather than something that reseals.Get it checked
LPLP on a Selectronic Advanced means the water supply has dropped below two litres a minute. The shower has cut its heaters rather than boil a trickle.Get it checked
Runs for five seconds then switches offA Selectronic that starts, runs for about five seconds and stops by itself has not seen water flowing. Redring name the flow transducer and, before it, the supply.Get it checked
E1E1 on a Selectronic Advanced is the outlet temperature sensor open or short circuit. It is the sensor that guards against scalding, so the shower will not run without it.Get it checked
E2E2 on a Selectronic Advanced is the inlet temperature sensor out of range. The shower cannot work out how much heat to add, so it declines to guess.Get it checked
Display behaves erraticallyRedring’s own heading for a Selectronic display doing odd things. Their fix is a power cycle at the isolator, and their aside is that the isolator should be off between showers anyway.Get it checked
Filter or handset filling with solid materialRedring’s most unusual entry. They say this is not a shower fault at all and send you to a plumber to look at your water supply.Get it checked
tA lone t on a Selectronic Premier, with bleeps, is the thirty-minute auto switch-off warning in temperature-lock mode. Press Warmer or Cooler and it carries on.Usually simple to fix
Heating after switch-offA Selectronic that has been stopped with the Start/Stop button but can still be heard heating has lost control of its elements. Redring’s answer is a new triac board; yours is the isolator.Stop — call an engineer
Poor spray pattern from the handsetRedring answer this with a spray plate clean and a mode change, and it is worth doing before it becomes one of the faults that costs money.Usually simple to fix

Redring models

Codes can differ between generations. Check yours.

Guides that help with Redring faults

Looking for Redring’s own support? www.redring.co.uk. We are not affiliated with Redring.