14
13
四、 MAINTENANCE
ITEM CONTENT FREQUENCY
draining after off work Daily
Weekly
Monthly
Monthly
Monthly
Monthly
Every Six
month
Drainage
Drainage pipe
Water inlet filter
Descaling
Deeply Descaling
Heat emission
Holes
Circuit
clean the filter head in case of not using soft water
and connected water supply pipe.
check the drainage pipe joints, and tighten it with
wrench if there is any loose;check the drainage pipe
for blocking, clean the pipe in time to avoid affect-
ing the drainage.
Descaling for using soft water .
Clean the residual scale in the boiler innerface, and
remove the water level detector and use sandpaper
to clean the scale on the surface;Clean the heater
and boiler innerface regularly (many scale accumu-
lates on the innerface of the heater used for a long
time, which will reduce energy efficiency and
increase power consumption. It is recommended to
replace it)
Check whether the short-cut protection circuit
function is normal, whether the short-cut protec-
tion circuit switch is loose, fire traces, use screw-
driver to tighten or replace it.
① Check the air outlet of the cooling fan regularly
for foreign matter and shielding (timely cleaning).
② Check regularly whether the cooling fan is
rotating normally (with or without wind power), and
maintain in time if any abnormality is found.
③ Clean the cooling fan filter regularly
2.Other Fault Analysis:
1.Fault Code Analyses:
Fault code
Fault
phenomenon
Fault
character
Fault point
Handling
method
F02
五、 FAULT ANALYSIS AND TROUBLESHOOTING
Check and
confirm methods
Abnormal time for adding water and replenishing water (when the water is
added for more than 6 minutes and none stop, or when the water is replenished
for more than 4 minutes and is not replenished)
water adding system error
Water source
Check if water
is blocked
Water pump Two position three
way solenoid valve
①Check if the pump is working
normally (there is slight
vibration and sound when
working normally)Water will
come out of the drainage pipe
within 5 seconds after starting
the machine.
②When there is no vibration,
check whether the pump power
supply end voltage is normal
(DC24V), normal means the
water pump is broken.
③No drain when vibration,
check whether the voltage at
the power supply end of the
pump is normal (DC24V),
otherwise the pump is broken.
①Check if the voltage at the
power supply end of two
position three-way solenoid
valves is normal (DC24V),
which is combined with crisp
sound under normal circum-
stances.No sound absorption
means that the water return
valve is broken.
②Under normal circumstanc-
es, suction but no water, it
means that the pipeline or
one-way valve blocked.
Replace water pump
Clean the blockage Replace water retrun valve or clean the
Fault Phenomenon Fault Character Fault Point Check And Confirm Methods Handling Method
Iron serious spraying
water
Abnormal water
level control
Water level sensor
scale
After drain, disassemble the equipment
to check if the water level probe is
scaling
Clean water level probe
Main control board
damaged
After drain, check if the voltage between
the water level probe and the hardware
plate where the probe is located is
AC12±1v;After the equipment is filled
with water, check if the voltage between
the water level probe and the hardware
plate where the probe is located is
AC0±1V.
① Replace main control board
② Check the water level line
and water level grounding port
