Q/A - Haier DSF80B E Operating Manual

Q/A

Phenomenon
Water too hot
Water temperature fluctuation
Water too cold
Without electricity
When used, the power supply
air switch tripping takes place
It doesn't work in case of
water supply
Displays E3
7
Things to be confirmed
1. Water flow too low to water heater
or external tap water temperature
rising
2. Power too high
Outlet water temperature higher than
℃
58 ; the water heater is in the fixed
temperature control working state
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. 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. Insufficient air switch capacity
2. Circuit fault of the water heater
1. Air switch tripping
2. The circuit is not connected
3. Over-temperature protection
Sensor fault
Solutions
1. Turn up the inlet water
2. Turn down the power
As above
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
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
1. Replace air switch
2. Have it checked by qualified
professional personnel
Have the circuit checked and
repaired by professional
personnel
Have the circuit checked and
repaired by professional
personnel