7
Q/A
Phenomenon
Things to be confirmed
Solutions
Water too hot
1.
Water flow too low to water heater
or external tap water temperature
rising
2.
Power too high
1.
Turn up the inlet water
2.
Turn down the power
Water temperature fluctuation Outlet water temperature higher than
58
; the water heater is in the fixed
℃
temperature control working state
As above
Water too cold
1.
Water flow too high or power too
low
2.
Water pressure too low so that the
water heater doesn’t start up
3.
Voltage fluctuation
4.
Lower than the requirements of the
product
1.
Reduce the inlet water or
increase the power
2.
Check whether the water
source is sufficient; if water
pressure needs to be
increased, temporarily close
other water valves in the
house or install an additional
pressure pump to increase
water pressure
3.
Return to normal voltage
4.
Contact the repair &
maintenance department
Without electricity
1.
Water pressure too low so that the
water heater doesn’t start up
2.
Power off
3.
Parts and components don’t work or
are damaged
1.
If the water pressure needs to
be increased, temporarily
close other water valves in
the house or install an
additional pressure pump to
increase water pressure
2.
Have the circuit checked by
professional personnel
3.
Contact with the repair &
maintenance department
When used, the power supply
air switch tripping takes place
1.
Insufficient air switch capacity
2.
Circuit fault of the water heater
1.
Replace air switch
2.
Have it checked by qualified
professional personnel
It doesn’t work in case of
water supply
1.
Air switch tripping
2.
The circuit is not connected
3.
Over-temperature protection
Have the circuit checked and
repaired by professional
personnel
Displays E3
Sensor fault
Have the circuit checked and
repaired by professional
personnel
Summary of Contents for DSF80B E
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