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Identify and Deal with Common Faults
If water heater broke down during normal use, please immediately cut off the power,
check according to the following content.
The water is not hot
(no display on the display)
no water
①Whether there is no water outside
or the water pressure is too low
②Whether the water inlet and outlet
shut-off valve is open
③Whether the pipeline is blocked
①Whether there is no water outside
or the water pressure is too low
②Whether the water inlet and outlet
shut-off valve is open
③Whether the pipeline is blocked
①Power failure or the power switch is
in the off position
②Internal circuit failure
①Check the power supply line
②Contact the maintenance department
The water is not hot
(Display works normally)
①The heating temperature is set too low
②The heating time is too short-10
③Mixing valve failure
④Internal circuit failure
①Increase the heating temperature
②Continue heating
③Replace the mixing valve
④Contact the maintenance department
Display shows code "E2"
The water heater is powered on without
water, and dry burning occurs
Damaged sensor
Thermal cut-out fault
Turn off the power, fill the water heater
with water first, and then turn on the
power
Contact the maintenance department
The water is suddenly
cold and suddenly hot
Drip from safety valve
drain
Unstable water pressure outside
Normal phenomenon
When the water pressure is normal
Connect to drain and lead to safe drain
The discharge port of the
safety valve continues to
flow water
Water pressure too high
Install a pressure limiting valve on
the water inlet line
Display shows code "E3"
Display shows code "E4"
fault phenomenon
cause of issue
Approach
Contact the maintenance department
60
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