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FAQ

The water of the Instantaneous Water Heater remains cold and its digital display screen does not light up. Why?
The master fuse may have tripped. Try to replace or reactivate it. The safety pressure/thermal cut-out may also be tripped.
Can I hire a qualified technician to do water heater installation by myself if I know exactly which model to replace my old one?
It depends on which type of water heater you are going to replace. On-site sighting is necessary if your old water heater is gas-typed.
What is Three-Phase Power?
It refers to three sets of alternating current with equal amplitude, equal frequency and phase difference of 120°.
Why do electric water heaters need Three-Phase Power?
The electricity consumption of electric water heaters is high, so is their power consumption requirement.
Can I use single-phase power instantaneous electric water heaters for shower in winter?
The power to heat the water is higher when taking shower in winter. Use Aerated Showerhead to enhance water flow efficiency.
What is the difference in the thermal efficiency of different types of water heaters?
Single-phase and three-phase power models have a thermal efficiency of around 98%.
Why is the Instantaneous Water Heater displaying the error code "Er"?
Error code "Er" indicates that the control system has switched off. Switch off the fuse and turn it on again.
What is the best way to clean and maintain the Instantaneous Water Heater?
Wipe the plastic surface and parts with a damp cloth. To ensure a stable water supply, detach and clean the outlet parts regularly.
The Instantaneous Water Heater displays the error code "NO" and is not responding to the remote control. Why?
The distance between the remote control and the water heater has exceeded the transmission range.
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