Do you have a question about the ZAPPI-207UW-T and is the answer not in the manual?
Questions and answers
John Renwick
June 20, 2025
In changing the setting on my Zappi, somehow I have made it 'locked'. The screen implies I need to feed in a 5 digit code made up of numbers 1-4 to unlock it I was not been given one by My Homes Solar who installed it with solar panels two years ago
We are grateful for any suggestions for improvement and notices of errors in the operating instructions. myenergi zappi, myenergi eddi, myenergi harvi and myenergi hub are registered trademarks of myenergi Ltd. operation and installation manual...
Menus Box Contents Tethered Units Untethered Units 1 x zappi unit zappi unit with EV cable and connector attached 1 x Cable wall guard 1 or 3 x CT Clamps 1 or 3 x CT Clamps (1x single phase units / 3x three phase units) (1x single phase units / 3x three phase units) 1 x Mounting Template 1 x Mounting template...
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Menus Overview Diagram The diagram below shows the zappi as part of a complete energy management system. Other myenergi products are shown with details of how they integrate with the grid connection and the microgeneration system. operation and installation manual...
Menus Operation Controls & Indicators Display Graphical LCD display with LED backlight Backlight can be activated by tapping the unit. Front Fascia Remove fascia for installing and servicing Tethered Charging Cable if 6.5-meter cable with a Type 2 plug or Type 2 socket with locking system for applicable untethered models.
The power that the property is currently using in kW. (Note: This is displayed only when the Generation Sensor is installed directly to a CT input or a harvi or other myenergi device) Status Text The current status is displayed here (see Status Screens page 9). Generation Power The power being generated at this time in kW.
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Menus Display Icons Key House Consumption – Not Importing Charge Mode = FAST House Consumption – Importing Charge Mode = ECO Solar Generation Power Charge Mode = ECO+ Charge Mode = STOP Wind Generation Power zappi Device – Normal On the three phase zappi the number in the icon indicates whether the EV is charging with a single phase or all three phases.
Menus Status Screens EV Disconnected The EV is not connected to zappi. In this example the last charging session delivered 20.8kWh of energy to the EV and 80% of that energy came from the solar panels. Waiting for Surplus zappi is waiting for sufficient surplus power from the microgeneration system.
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Menus Charging The EV is charging. In this example the car is charging in ECO+ mode at 1.6kW, there is no import or export from the grid (0.0kW) and the EV battery has charged by 8.9kWh since the car started. Charge Complete The EV is fully charged.
The output from zappi is turned off In STOP mode zappi will not charge your EV. This includes the boost modes and timed boost . zappi will continue to measure power and communicate with the other myenergi devices. operation and installation manual...
Menus Manual Boost The Manual Boost function can only be used when charging in ECO or ECO+ mode. When boosting, the charge rate is set to maximum (just like FAST mode), until a set amount of energy has been stored in the EV's battery. After which, zappi will revert to ECO or ECO+ mode.
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Menus Activating Smart Boost until SMART BOOST is shown. When charging in ECO or ECO+ mode, press The SMART BOOST icon will show including the target time and the pre-set energy amount. zappi will then test the EV for a few seconds, to determine the maximum charge rate.
Menus Boost Timer When using ECO or ECO+ charge modes, zappi can be programmed to 'boost' the current charge at certain times. When boosting, the charge rate is set to maximum (just like FAST mode), regardless of the amount of available surplus power.
Menus Lock Function zappi can be locked from unauthorised operation. The Lock Function requires a PIN number to be entered before the unit can be operated and/or a charge is allowed. The main display can also be hidden when zappi is locked. The lock can be set to be active –...
Power from the generator (if available) Consumption: Power consumed by the house (if available) Diverted: Total diverted energy (inc. all myenergi devices) Charging: Current power being supplied to the EV Charge Energy: Energy supplied to the EV during current charge session...
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A '!' mark shows a missing phase for 3 phase units zappi 3ph Tethered zappi 3ph! INFORMATION 3/4 Network ID: Network information for this device when linked to other devices using myenergi radio frequency (RF) network (Only shows if connected to Device Address: other devices) Master Address: Channel: EUI:...
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Menus Default Mode: Can be set to "FAST / ECO / ECO+ / MEM" (MEM stands for memory, i.e. last set mode before zappi reset ECO/ECO+ Sets the number of phases for ECO & ECO+ charge modes (only available on 3 phase zappi) Other Time &...
Note: The Network menu options only appear and can be configured on the MASTER device Linked Devices… Devices… Other myenergi devices can be wirelessly linked, this shows connected devices and their priorities. Settings for some devices are made here - see Linking Devices (page 27) Pairing Mode…...
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Menus Compatibility Active: When set to “On” the zappi will adapt to EV's with poor power factor Mode… Min PWM: Controls the Pilot PWM minimum limit Power Factor: When Active is “On” the measured power factor must be better than this set value to enable lower charging current set by Min PWM End Charge Delay: Charge Complete status is delayed by this time to allow access to the vehicle without starting...
Configuration Configuration Settings All settings are described in the Main Menu section; however, the more commonly altered settings are described in more detail below. Time & Date The date and time are used for the Boost Timer and the savings calculations and therefore should be set correctly. In the event of a power-cut, and providing you have a hub and have set the zappi to “update from cloud”, the zappi will update the time and date automatically.
Installation Advanced Settings The Advanced Settings menu is passcode protected. The default passcode is 0 0 0 0 although it can be changed with the Passcode menu option. Supply Grid – Device Settings Phase/Phase Rotation Single Phase zappi The Phase setting is only used when installing a single phase zappi onto a 3-phase supply.
Installation Supply Grid – Network Settings Grid Limit/Load Curtailment Sets the limit that can be drawn from the grid connection (i.e. the maximum import current or the main fuse rating). Example: A property may have a grid supply limit of 65A. Several appliances are on so the property is consuming 12kW (52A).
Net Phases When enabled, all readings from 3-phase myenergi devices configured as 3-phase, will be netted. This means that surplus generation on ANY phase will be considered available for consumption on ANY other phase.
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Monitor Monitors any load, for example a washing machine or a lighting circuit. This setting can also be used to limit current drawn by myenergi devices on a particular circuit which includes other loads. See Load Balancing / Current Limiting (page 40) for more details.
Only the first 4 groups can be used for current limiting, see Group Limits below. Group Limits Current limits can be set for certain CT Groups. When a Group Limit is set the myenergi devices in the group will limit the power they draw to keep within the set limit.
If the eSense input is live, zappi will not charge, regardless of set charge mode or a boost Linking Devices Up to six myenergi devices can be wirelessly linked together. By linking devices, you can use more of your own energy or have more control and visibility. Devices available now are:...
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The screen will show DEVICES UPDATING when this is happening. Device Priorities Each myenergi device that controls a load can be given a priority. The highest priority device will be allocated surplus generation power first. Devices can also be set up to share surplus power equally.
If you have any concerns about the wireless performance then we would be pleased to answer your questions, but please consider that if a WiFi signal works OK then there is a very high probability that the myenergi devices will also work without any issues.
Installation Installation When installing and wiring the zappi, care should be taken to maintain the IP rating of the unit. Ensure that the grommets and bungs provided are fitted, the O-ring behind the cover is seated correctly and that the incoming power and CT cables are fitted using an appropriate size and type of gland. Carefully remove fascia from the zappi by If installing a tethered zappi, you must ensure the pressing the 2 clips located at the bottom of unit...
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Installation Using zappi template mark mounting holes. For To maintain the IP rating of the unit you will need to add bungs (provided) to the unused holes. fixing to brick, use the top and 2 bottom holes (left/right). Use the 2 vertical holes as well as the top hole if mounting to a stud wall or joist.
Installation Electrical Installation Warnings WARNING! An electric shock can be fatal; electrical connection work may only be carried out by a competent person The earth conductor must be correctly installed and reliably connected This device must be equipped with an over-current protection device of maximum 32 Amps (B32) Supply The single phase zappi should be connected to a 230V/240V nominal AC supply.
Installation Wiring Insert mains cable through the installed cable gland (if not already done so). Strip back outer sheath ensuring all cables reach the terminal blocks (leaving a little excess). Strip back all coloured cables approx 10mm. If using hard wired CT clamps now is the time to insert these too (we recommend a specialist cable gland that can accommodate multiple cables whilst still maintaining IP integrity).
Installation Three Phase Wiring For 3 phase installations, without the need for For 3 phase installations, with the need for 1 or more hardwiring an external CT, please use the above external/additional CTs, please use the above diagram. diagram. Earth = Green / Yellow cable Positive (+) = Red Neutral = Blue cable Negative (-) = Black...
CTs can be wired to any myenergi device with CT inputs (e.g. eddi, zappi or harvi). This allows for flexible installation as a CT can be wired to the nearest device. Ideally the grid CTs should be wired to the master device.
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The positioning of the Grid CT sensor is crucial, please take note of the following when deciding where best to install the sensor: The sensor can be connected to any myenergi device with a CT input e.g. the eddi, zappi (wired sensor) or harvi (wireless sensor) ...
Only ONE Grid CT per phase (check for only one ~ symbol in Linked Devices Info). Positioned to ‘see’ ALL import and ALL export current (i.e. always upstream of any junction box). Must be on the same phase as the master myenergi device. All CTs Arrow should point towards the consumer unit.
Installation Fitting the Cover Offer cover to the enclosure, ensuring all cables are Add fascia to the enclosure cover of the zappi as neatly secured inside the unit. shown. Take particular care that the ribbon cable is not trapped between the cover and the case Ensure O-ring (seal) is firmly placed into the channel and secure the cover to the unit using the 8 screws that were removed earlier (Torque setting = 1.2Nm).
Load Balancing / Current Limiting / Load Curtailment CTs can also be used to limit the current drawn by myenergi devices to avoid overloading circuits; this is referred to as load balancing or load curtailment. There are four different ways to limit current and they can be used alone or combined for more complex situations.
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Live cable of the supply feeding the diverter. The arrow on the CT should be pointing away from the diverter (towards the consumer unit). Wire the CT to the nearest myenergi device or use a harvi if a wireless connection is needed.
If this happens and the fault cannot be reset by pressing the button for three seconds, then please contact myenergi technical support at support@myenergi.com. Over-current If there is a problem with the equipment on the EV which charges the vehicle’s battery, too much current may be drawn from the supply.
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Built-in Protection Thermal Limit zappi also includes protection against overheating. If zappi gets too warm it will attempt to reduce the current being drawn by reducing the EV charge rate. If this happens you will see the icon on the main display. If the problem continues and the zappi's internal temperature continues to rise, then it will trip the output to the EV, and the display will show Overheating! zappi will resume normal operation once the temperature drops.
If zappi has been installed alongside another zappi unit or another myenergi device, refer to Linking Devices (page 27) for guidance on pairing devices. Also refer to the instruction documentation for the other devices.
Troubleshooting Troubleshooting Symptom Cause Solution Display is blank - There is no power to the - Check for correct supply voltage at the unit supply screw terminals (220 - 260V AC) In ECO+ mode, the charge does - Grid Sensor incorrectly - Check the grid sensor is connected to a CT not start, the display is always installed...
Troubleshooting Faults If any of the following fault messages are displayed, follow the action described. Displayed Message Description Action Unknown Cable ! zappi has detected an unknown EV zappi will automatically retest the cable cable (untethered units only) after 5 seconds. Make sure you are using genuine IEC If the issue persists, unplug the cable check 62196-2 compliant plugs.
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Fault code 32 is not the same. If any of the above faults persist then stop using your zappi and contact your supplier or myenergi technical support at support@myenergi.com. operation and installation manual zappi...
+44 (0)333 300 1303. If myenergi agrees that the product should be returned (to be determined at the sole discretion of myenergi), it will issue a Return Merchandise Authorisation (RMA) number. The RMA must be clearly marked on the packaging of the product to be returned.
Technical Specifications Technical Specifications Performance Mounting Location Indoor or Outdoor (permanent mounting) Charging Mode Mode 3 (IEC 61851-1 compliant communication protocol) Display Graphical backlit LCD Front LED Multicolour, according to charge status, current and user setting Charging Current 6A to 32A (variable) Dynamic Load Balancing Optional setting to limit current drawn from the unit supply or the grid Charging Profile...
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Technical Specifications Charging Modes Charge power is continuously adjusted in response to changes in generation or power consumption elsewhere in the home. Charging will continue until the vehicle is fully charged, even if power is drawn from the grid. Charge power is continuously adjusted in response to changes in generation or power consumption ECO+ elsewhere in the home.
More from myenergi myaccount Register your myenergi devices, track your energy usage, make the most of flexible and “time of use” tariffs and much more at the myenergi online account myaccount.myenerg.com. The myenergi app We have a myenergi app for iPhone and Android devices. This allows you to control and monitor your zappi and other myenergi devices.
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Make sure you register your new myaccount.myenergi.com zappi and also have a look at the myenergi app myenergi Designed and manufactured in the UK by myenergi Ltd, Church View Business Park, Binbrook, Lincolnshire, LN8 6BY, UK T: +44 (0)333 300 1303 E: sales@myenergi.com W: myenergi.com...
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Do you have a question about the ZAPPI-207UW-T and is the answer not in the manual?
Questions and answers
In changing the setting on my Zappi, somehow I have made it 'locked'. The screen implies I need to feed in a 5 digit code made up of numbers 1-4 to unlock it I was not been given one by My Homes Solar who installed it with solar panels two years ago