Midea 190RDN3-E, Инструкция по установке и эксплуатации

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12
Installation & Owner‘s Manual
6.3 Combination button
7. TROUBLE SHOOTING
7.1 Non-error tips
Q: Why can’t the compressor start immediately after setting?
A: Unit will wait for 3 min to balance the pressure of system before
starting compressor again, it is a self protection logic for the unit.
Q: Why is the temperature shown on the display panel sometimes
decrease while unit is running?
A: When the upper tank temperature is much higher than the bottom
part, upper part hot water will be mixed with the bottom cold water
which flows from inlet tap water, so that will decrease the average
temperature.
7.2 Something about self-protection of unit
1) When the self-protection mode activates, the system will be stopped
and start a self-check, and restart when the error is resolved.
2) When the self-protection mode activates, the buzzer will buzz
every second minute, the will flash and error code will be
Table
.
7-1
E rror
phenomenon
Possible reason solution
Cold water
out and
display screen
extinguished
No hot water
out
Water leakage
Hydraulic pipeline j oints
are not sealed well.
Bad connection
between power supply
plug and socket;
Setting
water
temperature too low;
Temper sensor broken ;
PCB of indicator broken;
Compressor broken.
1. Plug in;
2. Setting water temp. higher;
3. Contact service center.
Waiting for public water
supply recover;
Waiting for inlet water
pressure increase;
Open water inlet valve.
Check and reseal all j oints.
Public water supply
ceased;
Cold water inlet pressure
too low (<0.15 Mpa);
Cold water inlet valve
closed.
1.
2.
3.
1.
2.
3.
1.
2.
3.
6.4 Auto-restart
If power is disconnected, the unit can remember some of the setting
parameters (On or Off state, operating mode, setting water tempera-
ture); when it re-powers on, the unit will be operated as per the
previous settings.
6.5 Button Auto Lock
When there is no operation of button for 1 minute, buttons will be
locked except Unlock button , Press for 3s, unlock buttons.
6.6 Screen Auto Lock
If there is no operation of button for 30s, screen back light will be
extinguished
.
Press any button will lighten the screen back light
.
No. Icon Description
Clear error
code
Query
mode
+
+
Press the two buttons at
the same time to clear all
stored error & protect
codes, and the buzzer
will buzz one time.
Press the two buttons at
the same time for 1sec
to go into query mode.
Under query mode user
can check unit setting &
running parameters by
pressing
circularly. Press button
for 1s or no
button operation for 30s,
then quit query mode.
shown at water temperature indicator. Press button for 1sec
to stop buzz, but the and error code will not disappear until the
error is resolved.
3) In the following circumstance, self-protection may happen:
If air inlet or outlet is blocked;
If the evaporator is covered with too much dust;
Incorrect power supply (exceeding the range of 220-240V).
7.3 When Error happens
1) If some cases of error happen, the unit will automatically shift to
E-heater for emergency SHW supply, please contact authorised
technician to repair.
2) In case of serious errors, the unit will not start, please contact
authorised technician to repair.
3) For some errors, the buzzer will buzz 3 times every other minute
and the will flash fast. Press for 1 sec to stop the buzzer
but the alarm icon will keep flashing.
7.4 Trouble shooting