16
generator completely cools down. Label the three wires which connect the upper part of the main
board to the water level sensor and the source, drain pump, electromagnetic drain valve and water
inlet electromagnetic valve in the bottom part of the main board. Unplug these wires and remove
the main board (be careful with yellow-green ground wire under the screws of the circuit board).
Install the replacement back carefully.
6.
Replace the sub-board:
switch off the steam generator and remove the service shape cover
when the generator completely cools down. Unplug all the wires on the sub-board. Label all the
wires on the relay and remove the sub-board. Install the replacement back carefully.
7. Replace the electromagnetic valve and drain pump:
switch off the steam generator and
disconnect the power and water supply. Remove the water inlet pipe, drain pipe and steam outlet
pipe when the generator completely cools down, then remove all pipes, wires and screws.
8. Replace the water level sensor:
switch off the steam generator and remove the water level
sensor service cover on the equipment after the generator cools down. Special care should be taken
to the plugs of the water level sensor corresponding to the blue wire and the two white wires
respectively. Take off all the wires, screw out the water level sensor, and screw in the new water
level sensor until the bottom of the plastic nut reaches the same height as the old one. Finally
reconnect the blue wire and the two white wires (the blue wire must be plugged back to the right
place).
Cut off the power supply before any maintenance.
Test the equipment after maintenance.
CHAPTER 5 TROUBLESHOOTING
Repair can only be performed by qualified professionals, for more services or technical helps
please contact the dealer.
NTC model steam generator has self-diagnose function, and some common faults will be
displayed on the LCD if occur.
Code
Meaning
Diagnose and Solution
-
L
Temperature measured by temperature
sensor is below 43
℉
Check whether the room temperature is below
43
℉
, the code should disappear after the
room temperature reaches 43
℉
. Otherwise
check the connection of the sensor.
-
H
Temperature measured by temperature
sensor is higher than 140
℉
Check whether the room temperature is above
140
℉
, the code should disappear after the
room temperature drops below 140
℉
.
Otherwise check the connection of the sensor.
-
E
Fault on the water supply, heating
elements stop working
Check
the
connection
and
status
of
electromagnetic valve, water supply
，
magnetizer and water level sensor. After
clean or replacement, restart the system and
you should feel the flow of incoming water.
