Ohme Home Pro red lightwhat it means
On a Home Pro the light strips turning red means error, and Ohme publish no code list behind it. Read the screen for the reason, power cycle once, and contact Ohme if it stays.
Take care
What this means
Ohme publish one line for a red light on the Home Pro: error, contact our customer care team. There is no numbered code list to look up, which is why searching for an Ohme error code finds nothing; the reason lives on the Home Pro’s screen and in the app rather than in a code.
What Ohme do publish are the individual conditions that produce a red light, and reading the screen tells you which one you have. A red flashing light with the charge paused is the voltage protection, which trips when the supply is above 253 or below 207 volts and is recorded in the app as an overvoltage or undervoltage error. A red light after the unit has lost the car is the built-in PEN fault detection, which disconnects live, neutral and earth when the voltage leaves that same window and, by design, will not reconnect for five minutes after it recovers.
A red light with the RCBO or breaker tripped is the residual-current protection, which Ohme say is reset by power cycling. And a red screen with a green or fading light is not an error at all: Ohme note the display turns from blue to red when Max Charge is applied. The order of operations Ohme sanction is short. Read the screen, unplug the car, power cycle at the dedicated breaker if the unit is unresponsive, and if the red light survives that, contact Ohme with the screen message, because the unit has no user-serviceable parts and the remaining causes are theirs.
What causes it
| Cause | What is actually happening | How likely |
|---|---|---|
| Supply voltage outside 207 to 253 volts | Ohme’s published threshold. Charging pauses and the light flashes red until the supply recovers; the app logs it as overvoltage or undervoltage, and the fix is the distribution network operator. | Common |
| PEN fault detection has operated | The Home Pro disconnects the car on the same voltage window and holds off for five minutes after recovery, so a red light that clears itself after a wait is often this. | Common |
| RCD or RCBO has tripped | Residual current at the car or in the installation. Ohme say to reset the RCBO and to have an electrician look if it will not stay on; repeated tripping is not a householder fault. | Occasional |
| A fault in the unit | The red light that survives a power cycle with the supply normal and the breaker on. Ohme customer care, quoting the screen message and serial number. | Rare |
What to try yourself
Read the screen, not just the light. Note the exact message and whether the light is steady or flashing; that is what Ohme will ask for.
Check it is not Max Charge. A red screen with the light strips green or fading green is the fast-charge mode Ohme describe, and it is working.
If the app shows a voltage error, tap Next View twice on the Home Pro to see the live voltage. Above 253 or below 207 is a supply problem for your DNO; the charger will resume on its own when it recovers.
Check the charger’s RCBO or breaker. A floppy switch has tripped: press it fully down until it clicks, then up. If it will not stay on, stop and call an electrician; do not hold it.
Repeated tripping is the installation or the car reporting an earth fault. Ohme’s position is to consult a competent electrician, and resetting it repeatedly is not a fix.If the light is still red with the supply normal, unplug the car, switch the charger off at its dedicated breaker for fifteen minutes and switch back on. That is Ohme’s full power cycle.
Still red: contact Ohme customer care with the screen message, the light pattern and the serial number. Ohme publish no user-serviceable parts, and nothing further is an owner action.
Get a registered electrician to look at your Ohme ev charger
We do not pass enquiries to a repair firm, so there is no form here. When you book a registered electrician, tell them the make, the model and the exact code or message on the display, and ask whether they carry parts for this make — that is what turns one visit into a repair rather than a quote.
What it costs to fix
Typical repair cost
£0
Time on site
20 minutes
Nothing on the charger. A voltage problem is the DNO’s to investigate and fix; an RCBO that will not hold or a unit fault is warranty or Ohme’s repair route.
Typical UK prices including parts and labour, updated September 2026. Your quote may differ.
Own this appliance and had this code? . Nothing is published until a person has read it.
Related Ohme fault codes
- Flashing yellowGet it checkedOn a Home or Go this means an electrical fault, and all lights flashing together means the car. Steady red on these models is not a fault at all.Related: status lights
- Home Pro blue lightUsually simple to fixBlue on a Home Pro is delayed charging: the car is plugged in and Ohme is waiting for the scheduled or off-peak window. Solid green is plugged in, fading green is charging.Related: status lights
- Charger offlineUsually simple to fixAn Ohme that shows Connecting to the internet, Scanning cell towers or Trying to reconnect, or an ePod blinking orange, has lost its 4G link. Ohme’s remedy is a fifteen-minute power cycle.Related: status lights
- OvervoltageGet it checkedAbove 253 volts or below 207, Ohme pause charging. Their published remedy sends you to your distribution network operator, not to Ohme.Related: same brand
- RCD activationGet it checkedOhme build the residual current protection into the unit and publish the reset for it — one of very few owner actions any manufacturer in this category sanctions.Related: same brand
- Suspended EVUsually simple to fixAn app message meaning Ohme tried to send charge and the car limited what it would take. Ohme’s checklist runs through the car’s own limits, timers, tariff pairing and the API link.Related: same brand
Own an Ohme ev charger? Save it and its codes come first next time.
Related guides
Common questions
Where is the error code?
There is none in the sense of a numbered list. Ohme publish the light colours and a handful of named conditions, and the Home Pro screen and the app carry the description. Quote what the screen says rather than looking for a number.
On my old Ohme, red was normal. Why is it an error now?
Because the conventions differ by model. On a Home or Go, steady red is connected and waiting for the car. On the Home Pro, Ohme publish red as error. Check which unit you have before reading anything into a colour.
The red light went away by itself after a few minutes. Do I need to do anything?
Probably not, but note the time. A self-clearing red light matches the voltage protection and the PEN detector’s five-minute hold-off, both of which are the charger reacting to your supply. If it happens at the same time each day, tell your DNO.
Technical review
Not reviewed by an engineer
No engineer has read this page. Severity follows what the manufacturer publishes, and we would rather tell you that than let a byline imply a sign-off.
Sources and how we verified this
We establish the facts from the sources below and then write the explanation ourselves. We do not copy manufacturer wording and we do not host their manuals.
- Manufacturer support portal
- Manufacturer technical and service documentation
This page has not been reviewed by an engineer, and we would rather tell you that than imply otherwise. The severity rating follows what the manufacturer publishes: where they say isolate the appliance and call someone, so do we.