[GROHE Blue] Frequently Asked Questions (Q&A)
Sparkling Water System Q&A
Room temperature generally refers to around 27°C, while chilled water usually refers to cold water at or below 10°C. However, the recommended temperature for cold drinks is 10–16°C.
A. When a water supply interruption or water tank cleaning is announced, unplug the sparkling water system and shut off its water supply. After the water supply is restored, wait approximately 1–2 hours before reconnecting the power and reopening the water supply. Then allow the system to remain on standby for 1 hour before use.
A. Check whether the sparkling water system’s CO₂ level is below 10% and whether the cylinder pressure gauge reads below 2 bar. If so, replace the CO₂ cylinder. We recommend keeping a spare cylinder on hand.
A. If the CO₂ has been completely depleted (we recommend not allowing the system’s CO₂ level to fall below 5%), replace the cylinder and allow the system to remain on standby for 2 hours. At this point, carbonation should return to a lightly sparkling level. After 3 hours, it should return to the normal full carbonation level. For instructions on replacing the CO₂ cylinder, please refer to Q4.
A. Follow the steps below to replace the CO₂ cylinder (using a 425 g cylinder as an example):
The replacement procedure for the 2 kg and 425 g CO₂ cylinders is generally the same. You may also refer to the video below.
(After replacement, remember to synchronize the system’s remaining carbonation level. For setup instructions, refer to Step 7 in the 425 g CO₂ cylinder replacement video above.)
A. The filter cartridge needs to be replaced. Please contact our service team to arrange filter replacement. (Service Hotline: 0800-707-168)
Note: After replacing the filter cartridge, flush 5 liters of water through the system to rinse the new filter. The E1 insufficient water supply warning may appear several times during this process. If this occurs, unplug the power for 3 minutes, then reconnect it. The filter has an approximate service life of 3,000 liters, with usage automatically calculated by the system based on water consumption.
A. If the filtration system has not been used for more than 3 days, flush at least 6 liters of water through the faucet before use. If it has not been used for more than 4 weeks, the filter cartridge should be replaced. Under normal conditions, the filter cartridge can be used for up to 18 months. The filter head should be replaced after 5 years.
A. This indicates that the system’s safety protection has been activated because approximately 10 liters of chilled water were dispensed continuously in a single session. Unplug the system, wait 3 minutes, then reconnect the power and allow it to remain on standby for at least 30 minutes. The system can then be used normally.
A. Check whether any warning indicator or error signal appears on the sparkling water system or faucet, and follow the corresponding instructions if one is displayed. If no signal appears, unplug the system for 3 minutes and then reconnect the power. If the issue persists, please contact our service team for inspection.
(Service Hotline: 0800-707-168)
A. Please check whether the water supply is turned on. If it is, there may be a water outage or another issue. This condition is not caused by the system itself.
A. Each time the sparkling water function is turned off, water may continue to flow from the faucet for approximately one second due to the system’s signal response time. This is part of the manufacturer’s normal design.
A. When the ambient temperature is too high (above 32°C), the unit will automatically enter a cooling cycle every 20 minutes. You can also unplug the unit, wait 30 seconds, and then reconnect the power, or open the cabinet door slightly to improve ventilation and heat dissipation.
A. This feature is currently unavailable in Taiwan.
[GROHE Blue] Troubleshooting
Maintenance & Cleaning
Warning!
Environmental Hazard!
Before performing maintenance on the system, always disconnect the power supply and the CO₂ supply. Only then should you disconnect the plug-in connectors.
❗ Cleaning the Main Unit
For hygiene and health reasons, the main unit must be cleaned once a year. Cleaning should be carried out before replacing the filter cartridge to prevent contamination of the new cartridge.
Note:The cleaning kit can be ordered through an authorized GROHE dealer.
(Product No.: 40 434 001) and the included adapter (Product No.: 40 694 000).
Service
| Fault ❓ | Cause ❗ | Troubleshooting Method ☑ |
|---|---|---|
| No Water Flow |
• Filter Cartridge Not Installed Correctly • Bent Hose • Water Supply Interrupted |
– Insert the filter cartridge directly and turn it 1.5–2 rotations. – Check the hose for any bends or kinks. – Fully open the shut-off valve. |
|
“E1” Is Displayed and No Chilled or Sparkling Water Is Dispensed Blue® Handle Flashes a Red Warning Light |
• Automatic Safety Shut-Off Valve for the Water Pump |
– Disconnect the power supply, wait 30 seconds, and then reconnect it. – Insert the filter cartridge directly and turn it 1.5–2 rotations. – Check the hose for any bends or kinks. – Fully open the shut-off valve. |
| “E3” Is Displayed and No Chilled or Sparkling Water Is Dispensed. |
• No Connection Between the Faucet and the Main Unit • Faulty Cable or Connector |
– Connect the Plug-In Connector. – Please Contact the Service Department of an Authorized GROHE Dealer. |
| “E5” Is Displayed and No Chilled or Sparkling Water Is Dispensed; the Blue® Handle Flashes a Red Warning Light. | • Main Unit Malfunction |
– Disconnect the Power Supply. Disconnect the main power supply, wait 30 seconds, and then reconnect it. |
| “E7” Is Displayed and No Chilled or Sparkling Water Is Dispensed; the Blue® Handle Flashes a Red Warning Light. | • Moisture Detected Inside the Main Unit |
Disconnect the Power Supply. Wait 15 minutes, then reconnect the power. • If the condensation clears, the main unit is ready for operation. • If a leak occurs and the error message reappears, be sure to contact the service department of an authorized GROHE dealer. |
|
“E8” Is Displayed on the Screen, Blue® Handle Flashes an Orange Warning Light |
• Filter Cartridge Has Reached the End of Its Service Life and Can No Longer Filter Effectively | – Replace the filter cartridge immediately. See page 10. |
| “E9” and “HI” Flash Alternately on the Display. | • Main Unit Temperature Is Too High and Heat Cannot Dissipate Properly |
– Turn off the Blue® switch, ensure adequate ventilation, and reduce the ambient temperature to a maximum of 32°C. – Allow the main unit to cool for at least 10–15 minutes. – Reset error code E9. See below. |
|
“EC” Is Displayed on the Screen, Blue® Handle Flashes a White Warning Light |
• CO₂ Cylinder Is Nearly Empty or Not Positioned Correctly | – Replace the CO₂ cylinder or reposition it correctly. See page 11. |
|
For Medium and Sparkling No CO₂ in the Medium and Sparkling positions. |
• CO₂ Cylinder Is Empty | – Replace the CO₂ cylinder. See page 11. |
Ondus App Service
| Fault ❓ | Cause ❗ | Troubleshooting Method ☑ |
|---|---|---|
| Login / Unable to Connect |
• No GROHE Account • Not Signed In to a Google or Facebook Account |
– Register for a GROHE account, then sign in using your new GROHE account. – Sign in using your existing Google or Facebook account. |
| Wi-Fi Cannot Detect the GROHE Blue Professional Main Unit | • Configuration Mode / Wi-Fi Is Not Enabled | – Enable Wi-Fi on your smartphone and make sure it is connected to a network. If only other wireless networks are displayed, please contact the customer service department of an authorized GROHE dealer. |
| System Integration Failed | • GROHE Blue Professional Main Unit Is Out of Range |
– Reposition the router. – Use a Wi-Fi repeater. |
Automatically reset error code E9 after approximately 20 minutes, once the temperature has cooled to a maximum of 32°C.
· Or reset the system by disconnecting the power supply for 30 seconds.
· Allow the main unit to cool for at least 10–15 minutes.
If “EE” flashes or the fault cannot be resolved, disconnect the power supply to the main unit.
Note the serial number on the back of the main unit and contact the service department of an authorized GROHE dealer.
Only GROHE service technicians are authorized to repair the GROHE Blue main unit/carbonator.
CO₂ Cylinder Reuse
CO₂ cylinders are recyclable and can be refilled for reuse.
When the cylinder reaches the end of its service life, it must be disposed of in accordance with local regulations.
You can purchase CO₂ cylinder refill kits through authorized GROHE dealers.
The main unit is classified as electronic equipment, and regulations for the return and recycling of electronic devices apply in most countries. GROHE complies with all applicable recycling regulations in the relevant countries.
When preparing to dispose of the unit, make sure it is stored safely and protect the cooling circuit from damage. The unit contains a flammable refrigerant.
Such equipment must not be disposed of with household waste and must be handled separately in accordance with applicable national or regional regulations.