Midea R290 heat pump: troubleshooting and support
In this article, we explain how to use the Midea R290 heat pump and what to do if something goes wrong.
What do the symbols on my Midea R290 controller mean?
How do I adjust the Date/Time on my Midea R290 controller?
1. Press & Hold < & > simultaneously for 1.5 seconds to unlock the controller
2. Press Menu
3. Navigate to Settings
4. Navigate to Display Settings
5. Adjust Date/Time as necessary
6. Press Menu for 2 seconds to return to the home screen
How do I schedule my hot water?
Instructions for setting up a hot water schedule can be found here.
Taking advantage of time of use tariffs for scheduling your Domestic Hot Water (DHW) cycles can significantly decrease the cost of keeping your water hot. Good Energy’s heat pump tariff would save our customers over £100 a year on average.
How do I change the time of my disinfection cycle?
1. Press & Hold < & > simultaneously for 1.5 seconds to unlock the controller
2. Press Menu
3. Navigate to DHW
4. Navigate to Disinfect
5. Adjust Operation Day/Start as necessary
Please note, if the disinfection cycle is scheduled to come on during times of high hot water usage, the cycle will take longer to complete.
My water is too hot, what should I do?
If your hot water feels consistently hotter than you’d like, you can adjust the domestic hot water (DHW) set point by following these steps:
1. Press & Hold < & > simultaneously for 1.5 seconds to unlock the controller
2. Highlight the DHW temperature
3. Use the Up and Down arrows to adjust the temperature
Note: We typically set the DHW temperature to 50°C as standard
If your hot water is suddenly hotter than usual, here are a few possible reasons:
1. We usually schedule the weekly disinfection cycle for Tuesday mornings. If the water feels hotter only on Tuesdays, this is completely normal.
2. Check that the Immersion Override switch hasn’t been accidentally turned on, as this can also cause unusually high water temperatures.
If none of the above apply and the issue continues, please contact us for further assistance at [email protected].
My heat pump has stopped working and there is not an error code on the Midea controller
Please send us a picture of your Midea controller home page, as well as your error history to [email protected].
Here is how to access your heat pump error history:
1. Press & Hold < & > simultaneously for 1.5 seconds to unlock the controller
2. Press Menu
3. Navigate to Error History
I have an E8 error code on my Midea controller
An E8 error code will display if the system has not detected any flow within the circuit when it has activated the circulation pump. This error code will self-reset and can occur due to something as simple as an air lock. If you are repeatedly seeing E8 error codes, please follow the advice for E0 error codes.
I have an E0 error code on my Midea controller
An E0 error code will display if the system has 3 x E8 error codes within a 9 minute window and is due to the system not detecting any flow within the circuit once it has activated the circulation pump.
This error code will not self-reset – please follow the below to clear it:
Top up your system pressure:
You will first need to locate your filling loop, it is usually next to your hot water cylinder. Filling loops consist of a braided pipe with a black-handle valve on either end, as shown in the image.
1. Fully open one of the black taps, so that it is following the direction of the pipe
2. Slowly start to open the second valve
3. Notice the pressure increasing
4. Close both valves once adequately filled.
If your system pressure is already between 1 – 1.5 bar, then please proceed to cleaning the filter. If the pressure was low, please proceed to System Reset.
Cleaning filters
You will require a spanner and some needle nosed pliers (or similar):
You can usually find the valve(s) on the pipework either externally, near the heat pump or internally, where most of the equipment for the heat pump was installed. It looks similar to the valve shown in the below picture, but could be silver, and a different size.
- Turn off the power to the heat pump to ensure it is no longer running.
- Close the valve, with the lever pointing perpendicular to the pipe at a right angle.
- Loosen the nut with a spanner (or ‘Plumbers Grips’) in an anticlockwise direction (a small amount of water will leak out at this stage. If a lot of water is coming from the valve, check it is fully closed)
- Locate and remove the circlip inside the filter with the pliers.
- Remove the internal gauze and rinse under a tap until clean.
- Reinstate the internal gauze, circlip, nut (ensure tightened with spanner) and then open the valve back up. Ensure the nut is back on tight and not leaking.
IF you don’t have a pair of needle nosed pliers, or are struggling to remove the circlip, you could rinse the filter out with the internal gauze in situ by using a hose (low pressure). Please note, this may not remove ALL of the trapped debris.
Once you have confirmed system pressure is at normal operating range and filter(s) are clean, then proceed to System Reset (if you haven’t had to already turn the power off)
System Reset:
1. Switch the power OFF at your Heat Pump consumer unit. Using the red breaker on the very far right-hand side of the consumer unit.
2. Wait for 60 seconds.
3. Switch the power back ON.
If after 30 minutes of the heat pump trying to run in heating or hot water mode, and you notice on the Midea Controller the E0 persists following all of the above steps being carried out, then please let us know by emailing [email protected].