Keys To Difficulties - Haier FCD-HM50 Operation Instruction Manual

Cleaning and Maintenance of Unit · Keys to Difficulties
Cleaning and Maintenance of Unit
Interior Cleaning: In order to maintain the high-efficiency of the water heater, clean the heating tube and
interior shell once every three years. Don't damage the exterior of the heating tube and the protective layer of
the surface of the interior shell. The magnesium bar should be replaced periodically according to local water
quality and usage habits.
Cleaning of Interior Shell: You must remove power plug before the cleaning the interior shell. During the
cleaning period, close the inlet valve, open the outlet valve, remove the bottom cover, transparent decoration
accessories and decorative cover of the shockproof wall, dismantle the magnesium bar (at this moment you
can check the consumption condition of magnesium bar in order to replace it. Note: The magnesium bar is
sold separately), empty the water inside water tank, open the inlet valve to flush it for several minutes until
the clean water is drained, and re-install decorative cover of the shockproof wall, transparent decoration
accessories, and bottom cover.

Keys to Difficulties

Symptom
No water flows out
Outlet is cold water
It can't heat to
temperature or outlet of hot water
is low
Outlet is high one minute and low
the next, or cold one minute and
hot the next
It can't be started or the display
screen is not bright
Indication E1
Indication E2
Indication E3
Items to be confirmed
1. If the water supply system stops
supplying water or if water pressure
is too lower
2. If water use point is clogged, and if
hot water valve is opened
1. If hot water opening hasn't been
opened
2. If water temperature is adjusted
3. The heating time is too short, and it
hasn't reached setting temperature
4. If elements are damaged
required 1. If the current function mode is
correctly set, and if the temperature
setting is too low
2. If tap water pressure is too high
If tap water pressure is stable
1. If the contact of power supply is
good
2. If elements are damaged
Circuit fault
1. If interior shell is filled with water
2. If elements are damaged
1. If indoors temperature is less than
20℃ below zero
2. If the sensor is damaged
16
Solution
Check
Check and clean
Clean and open
Conduct correction according to
operation method shown in
instruction manual.
Please contact the service department
if it is not the items shown in 1, 2,
and 3.
Conduct correction according to
operation method shown in
instruction manual.
Reduce the flow of the mixing valve
Reduce the flow of the mixing valve
or wait for the stability of water
pressure
Check power socket
Please contact the service department
if it is not the items shown in 1.
Please contact the service department
After power off, fill fully with water,
and turn back on
Please contact the service department
if it is not the items shown in 1.
Turn off the power supply, and it can
resume normal condition after
turning back on when ambient
temperature is higher than 19℃
below zero.
Please contact the service department
if it is not the items shown in 1.