Bedienungsanleitung Midea RSJ-35 - 300RDN3 (Seite 17 von 22) (Englisch)

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In vacation period, the setting target water

temperature is 15℃ as default and will show

the remanent vacation days. On the last day of

vacation, unit will automatically start disinfect

function, and automatically reset the target

temperature to the last one before vacation.

If unit has already been in vacation or OFF, press

w will lead to show invalid icon on the

display.

Installation & Owner's Manual

5.3 Combination button

5.4 Auto-restart

5.5 Button Auto Lock

Icon DescriptionNo

No. Icon Description

Clear

error

code

Query

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 querying. Under

querying user can check

unit setting & running

parameters by pressing

circularly. Press

button for 1s or no button

operation for 30s,

then quit querying.

If electricity power failed, unit can memorize all setting parameters,

unit will be back to the previous setting when power recover.

When there is no operation of button for 1 minute, button will be

locked except Unlock button , Press for 3s, unlock

buttons.

5.6 Screen Auto Lock

If there is no operation of button for 30s, screen will be locked(extinguished)

except for error code and alarm light.

Press any button will unlock the screen(lighten).

6.2 Something about self-protection of unit

6.3 When Error happened

When the self-protection activates, the system will be stopped

and start a self-check, and restart when the error is resolved.

When the self-protection activates, the buzzer will buzz every

second minute, the will flash and error code will be shown at

water temperature indicator. Press button for 1sec to stop

buzz, but the and error code does not disappear until the error

is resolved.

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).

Why is the temperature shown on the display sometimes

decreased but unit still keep off?

A: To avoid unit ON/OFF frequently, unit will activate heat source only

when bottom tank temperature is lower than setting temperature

for at least 5 ºC.

Q:Why is the temperature shown on the display sometimes will

decrease dramatically?

A: It is because tank is pressure-bearable type, if there is massive hot

water demand, hot water will quickly tapped out from upper part of

tank at the same time cold water will quickly tapped into bottom

part of bank.The cold water flows to the upper temperature sensor,

the temperature shown on the display will decreased dramatically.

Q: Why is the temperature shown on the display sometime decrease

a lot, but there is still a mount of hot water can be tapped?

A: This is because the upper water sensor is located on the upper 1/4

tank, when tapping hot water out, it means there is at least 1/4 tank

of hot water available.

Q: Why is unit shown the icon "LA" on display ?

A: The heat pump available running ambient range is from -7 to 43℃,if

ambient temperature is out of the range, system will show

above-mentioned signal to let user notice it.

Q: Why is there nothing shown on the display?

A: To maintain display screen lifespan within along term, when there

is no button operation for 30 sec, it will extinguwish the display

except the LED indicator.

Q: Why are the buttons unavailable sometimes?

A: If there is no operation on panel for 1 min, unit will lock the panel,

shows " ", to unlock the panel, please press the "ENTEF" button

for 3 seconds.

Q: Why is there some water flowed from drainage pipe of PTR valve?

A: It is because the tank is pressure-bearable one, when water is

heated inside the tank, it will expand. So the pressure inside of

tank will increase. If pressure goes up more than 1.0MPa, PTR

valve will activate to release the pressure and discharge hot water

correspondingly. If water is continually discharged from PTR valve

drainage pipe, it is abnormal. Please contact authorised technician

to check.

6. TROUBLE SHOOTING

6.1 Non-error tips

Q: Why can't compressor start immediately after setting?

A: Unit will wait for 3 min to balance the pressure of system before

start compressor again, it's a self protection logic of unit.

Q: Why is the temperature shown on the display panel sometimes

decreased while unit is running?

A: When the upper tank temperature is much higher than the bottom

part, upper part hot water will be mixed by the bottom cold water

which flows from inlet tap water, so that will decrease the upper

part temperature.

If some cases at error happen, unit will automatically shift to

E-heater for emergent SHW supply, please contact authorised

technician staff to repair.

If case of serious errors the unit will not start, please contact

authorised technician to repair.

If some errors, the buzzer will buzz 3 times every minute and the

will flash fast. Press for 1 sec to stop the buzzer but

the alarm icon will keep flashing.

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Midea RSJ-35 - 300RDN3 Seite 17

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