wilfa 97924 Lofoten Powerful 6.5 kW heat pump Instruction Manual

: June 5, 2024
: Wilfa

Table of Contents

wilfa 97924 Lofoten Powerful 6.5 kW heat pump
IMPORTANT SAFETY INSTRUCTIONS
PRODUCT OVERVIEW
HOW TO USE
INTRODUCTION FOR SPECIAL FUNCTONS
OPERATION
CLEAN AND MAINTENANCE
TROUBLESHOOTING
ERROR CODE
GUARANTEE
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

wilfa 97924 Lofoten Powerful 6.5 kW heat pump

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IMPORTANT SAFETY INSTRUCTIONS

Read this instruction manual thoroughly before use and save it for future reference. It is also available at our website; wilfa.com.
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be done by children without supervision.
Do not connect air conditioner to multi-purpose socket. Otherwise, it may cause fire hazard.
Do disconnect power supply when cleaning air conditioner. Otherwise, it may cause electric shock.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
Do not wash the air conditioner with water to avoid electric shock.
Do not spray water on indoor unit. It may cause electric shock or malfunction.
After removing the filter, do not touch fins to avoid injury deformation or fire hazard.
Do not use fire or hair dryer to dry the filter to avoid.
Maintenance must be performed by qualified professionals. Otherwise, it may cause personal injury or damage.
Do not repair air conditioner by yourself. It may cause electric shock or damage. Please contact dealer when you need to repair air conditioner.
Do not extend fingers or objects into air inlet or air outlet. It may cause personal injury or damage.
Do not block air outlet or air inlet. It may cause malfunction.
Do not spill water on the remote controller, otherwise the remote controller may be broken.
When below phenomenon occurs, please turn off air conditioner and disconnect power immediately, and then contact the dealer or qualified professionals for service:
- Power cord is overheating or damaged.
- There’s abnormal sound during operation
- Circuit break trips off frequently.
- Air conditioner gives off burning smell.
- Indoor unit is leaking.
If the air conditioner operates under abnormal conditions, it may cause malfunction, electric shock or fire hazard.
When turning on or turning off the unit by emergency operation switch, please press this switch with an insulating object other than metal.
Do not step on top panel of outdoor unit, or put heavy objects. It may cause damage or personal injury.

THE REFRIGERANT

To realize the function of the air conditioner unit, a special refrigerant circulates in the system. The used refrigerant is the fluoride R32, which is specially cleaned. The refrigerant is flammable and inodorous. Furthermore, it can lead to explosion under certain conditions. But the flammability of the refrigerant is very low. It can be ignited only by fire.
Compared to common refrigerants, R32 is a nonpolluting refrigerant with no harm to the ozonosphere. The influence upon the greenhouse effect is also lower. R32 has got very good thermodynamic features which lead to a really high energy efficiency. The units therefore need a less filling.

WARNING: Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacture. Should repair be necessary, contact your nearest authorized Service Centre. Any repairs carried out by unqualified personnel may be dangerous. The appliance shall be stored in a room without continuously operating ignition sources. (for example: open flames, an operating gas appliance or an operating electric heater.) Do not pierce or burn. Appliance filled with flammable gas R32. For repairs, strictly follow manufacturer’s instructions only. Be aware that refrigrants not contain odour. Read specialist’s manual.

INSTALLATION PRECAUTIONS

Installation must be performed by qualified professionals. Otherwise, it may cause personal injury or damage.
Must follow the electric safety regulations when installing the unit.
According to the local safety regulations, use qualified power supply circuit and circuit break.
Do install the circuit break. If not, it may cause malfunction.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in fixed wiring.
Including an circuit break with suitable capacity, please note the following table.Air switch should be included magnet buckle and heating buckle function, it can protect the circuit-short and overload.
Air Conditioner should be properly grounded. Incorrect grounding may cause electric shock.
Don’t use unqualified power cord.
Make sure the power supply matches with the requirement of air conditioner.Unstable power supply or incorrect wiring or malfunction. Please install proper power supply cables before using the air conditioner.
Properly connect the live wire, neutral wire and grounding wire of power socket.
Be sure to cut off the power supply before pro-ceeding any work related to electricity and safety.
Do not put through the power before finishing installation.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper tube.
The appliance shall be installed in accordance with national wiring regulations.
Installation must be performed in accordance with the requirement of NEC and CEC by authorized personnel only.
The air conditioner is the first class electric appliance. It must be properly grounding with specialized grounding device by a professional. Please make sure it is always grounded effectively, otherwise it may cause electric shock.
The yellow-green wire in air conditioner is grounding wire, which can’t be used for other purposes.
The grounding resistance should comply with national electric safety regulations.
The appliance must be positioned so that the plug is accessible.
All wires of indoor unit and outdoor unit should be connected by a professional.
If the length of power connection wire is insufficient, please contact the supplier for a new one. Avoid extending the wire by yourself.
For the air conditioner with plug, the plug should be reachable after finishing installation.
For the air conditioner without plug, an circuit break must be installed in the line.
If you need to relocate the air conditioner to another place, only the qualified person can perform the work. Otherwise, it may cause personal injury or damage.
Select a location which is out of reach for children and far away from animals or plants.If it is unavoidable, please add the fence for safety purpose.
The indoor unit should be installed close to the wall.
Instructions for installation and use of this product are provided by the manufacturer.

PRODUCT OVERVIEW

MAIN UNIT

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Air inlet
Panel
Filter
Aux. button
Horizontal louver
Air outlet
Remote control
Heating indicator
Cooling indicator
Temperature indicator
Power indicator
Drying indicator
Reciver window

REMOTE CONTROL

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ON/OFF button
FAN button
MODE button
+/- button
ON/OFF button
FAN button
MODE button
+/- button
TURBO button
button
button
CLOCK button
TIMER ON / TIMER OFF button
TEMP button
button
I FEEL button
LIGHT button
WIFI button
QUIET button
SLEEP button

DISPLAY SCREEN

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HOW TO USE

INTRODUCTION FOR BUTTONS ON REMOTE CONTROLLER

Note:

This is a general use remote controller, it could be used for the air conditioners with multifunction; For some function, which the model don’t have, if press the corresponding button on the remote controller that the unit will keep the original running status.
After putting through the power, the air conditioner will give out a sound.
Operation indictor is ON (red indicator). After that, you can operate the air conditioner by using remote controller.
Under on status, pressing the button on the remote controller, the signal icon “ “ on the display of remote controller will blink once and the air conditioner will give out a “de” sound, which means the signal has been sent to the air conditioner.
Under off status, set temperature and clock icon will be displayed on the display of remote controller (If timer on, timer off and light functions are set, the corresponding icons will be displayed on the display of remote controller at the same time); Under on status, the display will show the corresponding set function icons.

1/5 ON/OFF button
Press this button, the unit will be turned on, press it once more, the unit will be turned off. Sleep function will be canceled, while unit off.

2/6 FAN button
Press this button, Auto, Low, Medium-low, Medium, Medium-high, High speed can be circularly selected. After powered on, Auto fan speed is default. Under DRY mode, Low fan speed only can be set up.

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Note: It’s Low fan speed under Dry mode.

3/7 MODE button
Press this button, Auto, Cool, Dry, Fan, Heat mode can be selected circularly. Auto mode is default while power on. Under Auto mode, the temperature will not be dis-played; Under Heat mode, the initial value is 28°C; Under other modes, the initial value is 25°C.

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4/8 +/- button
Presetting temperature can be increased. Press this button, the temperature can be set up, continuously press this button and hold for two seconds, the relative contents can quickly change, until unhold this button and send the order that the °C signal will be displayed all the time. The temperature adjustment is unavailable under the Auto mode, but the order can be sent if pressing this button. Temperature of degree setting: 16-30°, for Heating mode 8-30°C. Presetting temperature can be decreased. Press this button, the temperature can be set up, continuously press this button and hold for two seconds, the relative contents can quickly change, until unhold this button and send the order that the °C signal will be displayed all the time. The temperature adjustment is unavailable under the Auto mode, but the order can be sent by if pressing this button.

TURBO button
Under Cool or Heat mode, press this button can turn on or turn off the Turbo function. After the Turbo function turned on, the signal of Turbo will display. The signal will be automatically cancelled if changing the mode or fan speed..

button
Press this button to set left & right swing angle cycling as below:

button
Press this button to set swing angle, which circularly changes as below:

This remote controller is universal. If it receives threes kinds of following status, the swing angle will remain original.

CLOCK button
Press this button, the clock can be set up, signal blink and display. Within 5 seconds, the value can be adjusted by pressing + or – button, if continuously press this button for 2 seconds above, in every 0.5 seconds, the value on ten place ofMinutewill be increased 1. During blinking, repress the Clock button or Confirm button, signal will be constantly displayed and it denotes the setting succeeded. After powered on, 12:00 is defaulted to display and signal will be displayed. If there is signal be displayed that denotes the current time value is Clock value, otherwise is Timer value.

TIMER ON/TIMER OFF button
Timer On setting: Signal “ON” will blink and display, signal will conceal, the numerical section will become the timer on setting status. During 5 seconds blink, by pressing + or – button to adjust the time value of numerical section, every press of that button, the value will be increased or decreased 1 minute. Hold pressing + or – button, 2 seconds later, it quickly change, the way of change is: During the initial 2.5 seconds, ten numbers change in the one place of minute, then the one place is con-stant, ten numbers change in the tens place of minu te at 2.5 seconds speed and carry. During 5s blink, press the Timer button, the timer setting succeeds. The Timer On has been set up, repress the timer button, the Timer On will be canceled. Before setting the Timer, please adjust the Clock to the current actual time. One press this key to enter into TIMER OFF setup, in which case the TIMER OFF icon will blink. The method of setting is the sameas for TIMER ON.

TEMP button
Press this button, you can see indoor set temperature, indoor ambient temperature or outdoor ambient temperature on indoor unit’s display. The setting on remote controller is selected circularly as below:

When selecting with remote controller or no display, temperature indicator on in-door unit displays set temperature; When selecting with remote controller, temperature indicator on indoor unit displays indoor ambient temperature; When selecting with remote controller, temperature indicator on indoor unit displays outdoor ambient temperature. 3s later it will return to the setting temperature or it depends on the other received signal within 3s.

FEEL button
Press this button once, to turn on the I FEEL function, then the figure of “I FEEL” will be displayed, after every press of other function button, every 200ms to send I FEEL once, after this function started, the remote controller will send temperature to the main un it in every 10 minutes. When repress this button, this function will be turned off. When I FEEL function is turned on, the remote controller should be put within the area where indoor unit can receive the signalsent by the remote controller.

LIGHT button
Press this button at unit On or Off status, Light On and Light Off can be set up. After powered on, Light On is defaulted

WIFI button
Press WIFI button to activate function. Press again to stop function. More information about WIFI function from operation manual or wilfa.no, wilfa.com

QUIET button
Press this button, the Quiet status is under the Auto Quiet mode (display and “Auto” signal) and Quiet mode (display singal) and Quiet OFF (there is no signal of displayed), after powered on, the Quiet OFF is defaulted. Under the Quiet mode (Display signal). The Quiet function is only available for some models.

SLEEP button
Press this button, can select Sleep 1 ( ), Sleep 2 ( ), Sleep 3 ( ) and cancel the Sleep, circulate between these, after electrified, Sleep Cancel is defaulted. Sleep 1 is Sleep mode 1, in Cool, Dehumidify modes: sleep status after run for one hour, the main unit setting temperature will increase 1°C, 2 hours, setting temperature increased 2°C, the unit will run at this setting temperature; In Heat mode: sleep status after run for one hour, the setting temperature will decrease 1°C, 2 hours, setting temperature will decrease 2°C, then the unit will run at this setting temperature Sleep 2 is sleep mode 2, that is air conditioner will run according to the presetting a group of sleep temperature curve. In Cool mode:

When setting the initial temperature 16°C-23°C, after turned on Sleep function, the temperature will be increased 1°C in every hour, after 3°C
the temperature will be maintained, after 7hours, the temperature will be decreased 1°C, after that the unit will keep on running under this temperature;
When setting the initial temperature 24°C-27°C, after turned on Sleep function, the temperature will be increased 1°C in every hour, after 2°C
the temperature will be maintained, after 7hours, the temperature will be decreased 1°C, after that the unit will keep on running under this temperature;
When setting the initial temperature 28°C-29°C, after turned on Sleep function, the temperature will be increased 1°C in every hour, after 1°C
the temperature will be maintained, after 7hours, the temperature will be decreased 1°C, after that the unit will keep on running under this temperature;
When setting the initial temperature 30°C, under this temperature setting, after 7hours, the temperature will be decreased 1°C, after that the unit will keep on running under this temperature;

In Heat mode:

Under the initial presetting temperature 16°C, it will run under this setting temperature all along.
Under the initial presetting temperature17°C-20°C, after Sleep function started up, the temperature will decrease 1°C in every hour, after 1°C decreased, this temperature will be maintained.
Under the initial presetting temperature 21°C-27°C, after Sleep function started up, the temperature will decrease 1°C in every hour, after 2°C decreased, this temperature will be maintained.
Under the initial presetting temperature 28°C-30°C, after Sleep function started up, the temperature will decrease 1°C in every hour, after 3°C decreased, this temperature will be maintained.

Sleep 3 – the sleep curve setting under Sleep mode by DIY:

Under Sleep 3 mode, press “Turbo” button for a long time, remote controller en-ters into user individuation sleep setting status, at this time, the time of remote controller will display “1hour”, the setting temperature “88” will display the corr-esponding temperature of last setting sleep curve and blink (the first entering will display according to the initial curve setting value of original factory);
Adjust “+” and “-” button, could change the corresponding setting temperature, after adjusted, press “Turbo” button for confirmation;
At this time, 1hour will be automatically increased at the timer postion on the remote controller, (that are “2hours” or “3hours” or “8hours”), the place of se-tting temperature “88” will display the corresponding temperature of last setting sleep curve and blink;
Repeat the above step (2)~(3) operation, until 8hours temperature setting finished, sleep curve setting finished, at this time, the remote controller will resume the original timer display; temperature display will resume to original setting tem-perature.

Sleep 3 – the sleep curve setting under Sleep mode by DIY could be inquired:
The user could accord to sleep curve setting method to inquire the presetting sleep curve, enter into user individuation sleep setting status, but do not change the tem-perature, press “Turbo” button directly for confirmation.

Note : In the above presetting or enquiry procedure, if continuously within10s, there is no button pressed, the sleep curve setting status will be automatically quit and resume to display the original displaying. In the presetting or enquiry procedure, press “ON/OFF” button, “Mode” button, “Timer” button or “Sleep” button, the sleep curve setting or enquiry status will quit similarly.

INTRODUCTION FOR SPECIAL FUNCTONS

AUTO RUN
When AUTO RUN mode is selected, the setting temperature will not be displayed on the LCD, the unit will be in accordance with the room temp. Automatically to select the suitable running method and to make ambient comfortable.
Turbo function
If start this function, the unit will run at super-high fan speed to cool or heat quickly so that the ambient temp. Approaches the preset temp. as soon as possible.

Lock
Press + and – buttons simultaneously to lock or unlock the keyboard. If the remote controller is locked, the icon will be displayed on it, in which case, press any button, the mark will flicker for three times. If the keyboard is unlocked, the mark will disappear.

Swing up and down

Press swing up and down button continuously more than 2s, the m ain unit will swing backand forth from up to down , and then loosen the button, the unit will stop swing and present position of guide louver will be kept immediately.
Under swing up and down mode, when the status is switched from off to , pressing this button again 2slater, status will switch to off status directly; pressing this button again within 2s, the change

Swing left and right

Press swing left and right button continuously more than 2s, the main unit will swing back and forth from left to right, and then loosen the button, the unit will stop swing and present position of guide louver will be kept immediately.
Under swing left and right mode, when the status is switched from off to , if press this button again 2s later, status will switch to off status directly; if press this button again within 2s, the change of swing status will also depend on the circulation sequ-ence stated above

Switch between Fahrenheit and Centigrade
Under status of unit off, press MODE and – buttons simultaneously to switch °C and °F.

Combination of “TEMP” and “CLOCK” buttons: About Energy – saving Function
Press “TEMP” and “CLOCK” simultaneously in COOL mode to start energysaving function. Nixie tube on the remote controller displays “SE”. Repeat the operation to quit the function.

Combination of “TEMP” and “CLOCK” buttons: About 8°C Heating Function
Press “TEMP” and “CLOCK” simultaneously in HEAT mode to start 8°C Heating Function Nixie tube on the remote controller displays “ ” and a selected temperature of “8°C”. Repeat the operation to quit the function.

Quiet function
When quiet function is selected

Under cooling mode: indoor fan operates at notch 4 speed. 10 minutes later or when indoor ambient temperature≤28°C, indoor fan will operate at notch speed or quiet mode according to the comparison between indoor ambinet temperature and set tem-perature.
Under heating mode: indoor fan operates at notch 3 speed or quiet mode according to the comparison between indoor ambient temperature and set temperature.
Under dry, fan mode: indoor fan operates at quiet mode.
Under auto mode: the indoor fan operates at the auto quiet mode according to actual cooling, heating or fan mode.

Sleep function
Under the Fan and Auto mode, the Sleep function cannot be set up, under Dehumidify mode, only Sleep 1 can be selected. Select and enter into any kind of Sleep mode, the Quiet function will be attached and started, different Quiet status could be optional and turned off.

OPERATION

GENERAL OPERATION

After powered on, press ON/OFF button, the unit will start to run. (Note: When it is powered on, the louver of main unit will close automatically.)
Press MODE button, select desired running mode.
Pressing + or – button, to set the desired temperature (It is unnecessary to set the temp. at AUTO mode.)
Pressing FAN button, set fan speed, can select AUTO FAN, LOW, MEDIUM-LOW, MEDIUM, MEDIUM-HIGH and HIGH. Pressing and button, to select the swing.

OPTIONAL OPERATION

Press SLEEP button, to set sleep.
Press TIMER ON and TIMER OFF button, can set the scheduled timer on or timer off. Press LIGHT button, to control the on and off of the displaying part of the unit (This function may be not available for some units).
Press TURBO button, can realize the ON and OFF of TURBO function

REPLACEMENT OF BATTERIES IN REMOTE CONTROLLER

Press the back side of remote controller marked the cover of battery box along the arrow direction.
Replace two 7# (AAA 1.5V) dry batteries, and make sure the position of “+” polar and “-” polar are correct.
Reinstall the cover of battery box.

Note

During operation, point the remote control signal sender at the receiving window on indoor unit.
The distance between signal sender and receiving window should be no more than 8m, and there should be no obstacles between them.
Signal may be interfered easily in the room where there is fluorescent lamp or wireless telephone; remote controller should be close to indoor unit during operation.
Replace new batteries of the same model when replacement is required.
When you don’t use remote controller for a long time, please take out the batteries.
If the display on remote controller is fuzzy or there’s no display, pleaseB replace batteries.

EMERGENCY OPERATION
If remote controller is lost or damaged, please use auxiliary button to turn on or turn off the air conditioner. The operation in details are as below: As shown in the figure Open panel, press aux. button to turn on or off the air conditioner. When the air conditioner is turned on, it will operate under auto mode.

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CLEAN AND MAINTENANCE

Warning:

Turn off the air conditioner and disconnect the power before cleaning the air conditioner to avoid electric shock.
Do not wash the air conditioner with water to avoid electric shock.
Do not use volatile liquid to clean the air conditioner.

CLEAN SURFACE OF INDOOR UNIT
When the surface of indoor unit is dirty, it is recommended to use a soft dry cloth or wet cloth to wipe it.

Notice: Do not remove the panel when cleaning it.

CLEAN FILTER

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Open panel
Pull out the panel to a certain angel as shown in figure.
Remove filter
Remove the filter as indicated in the figure.
Clean filter
Use dust catcher or water to clean the filter. When the filter is very dirty use water (below 45°C) to clean it, and then put it in a shady place and cool place to dry.
Install filter
Install the filter and then close the panel cover thightly.

Warning:

The filter should be cleaned every three months. If there is much dust in the operation environment, clean frequency can be increased.
After removing the filter, do not touch fins to avoid injury.
Do not use fire or hair dryer to dry the filter to avoid deformation or fire hazard.

Note: Operation with dirty filters:

Cannot deodorize the air.
Cannot clean the air.
Results in poor heating or cooling.
May cause odours

CHECKING BEFORE USE-SEASON

Check whether air inlets and air outlets are blocked.
Check whether air switch, plug and socket are in good condition.
Chech whether filter is clean
Check whether mounting bracket for outdoor unit is damaged or corroded. If yes, please contact dealer.
Check whether drainage pipe is damaged.

CHECKING AFTER USE-SEASON

Disconnect power supply.
Clean filter and indoor unit’s panel
Check whether mounting bracket for outdoor unit is damaged or corroded.
If yes, please contact dealer

TROUBLESHOOTING

Problem| Possible reasons| Solutions
Indoor unit can’t receive remote controller’s signal or remote controller has no action.| Whether it’s interfered severely (such as static electricity, stable voltage)?

Whether remote controller is within the signal receiving range?

Whether there are obstacles?

Whether remote controller is pointing at the receiving window?

Is sensitivity of remote controller low; fuzzy display and no display?

No display when operating remote controller?

Fluorescent lamp in room?

| Pull out the plug. Reinsert

the plug after about 3min, and then turn on the unit again.

Signal receiving range is 8m.

Remove obstacles.

Select proper angle and point the remote controller at the receiving window on indoor unit.

Check the batteries. If the power of batteries is too low, please replace them.

Check whether remote controller appears to be damaged. If yes, replace it.

Take the remote controller close to indoor unit.

Turn of the fluorescent lamp

and then try it again.

No air emitted from indoor unit| Air inlet or air outlet of indoor unit is blocked?

Under heating mode, indoor temperature is reached to set temperature?

Heating mode is turned on just now?

| Eliminate obstacles.

After reaching to set temperature, indoor unit will stop blowing out air.

In order to prevent blowing out cold air, indoor unit will be started after delaying for several minutes, which is a normal phenomenon.

| |
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Air conditioner can’t operate| Power failure? Is plug loose?

Air switch trips off or fuse is burnt out?

Wiring has malfunction?

Unit has restarted immediately after stopping operation?

Whether the function setting for remote controller is correct?

| Wait until power recovery. Reinsert the plug.

Ask professional to replace air switch or fuse.

Ask professional to replace it.

Wait for 3min, and then turn on the unit again.

Reset the function

Mist is emitted from indoor unit’s air outlet| Indoor temperature and humidity is high?| Because indoor air is cooled rapidly. After a while, indoor temperature and humidity will be decrease and mist will disappear.
Set temperature can’t be adjusted| Unit is operating under auto mode?

Your required temperature exceeds the set temperature range?

| Temperature can’t be adjusted under auto mode. Please switch the operation mode if you need to adjust temperature.

Temperature range: 16-30.

for Heating mode 8-30.

Cooling (heating) effect is not good.| Voltage is too low?

Filter is dirty?

Set temperature is in proper range?

Door and window are open?

| Wait until the voltage resumes normal.

Clean the filter.

Adjust temperature to proper range.

Close door and window.

| |
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Odours are emitted| Whether there’s odour source, such as furniture and cigarette, etc.| Eliminate the odour source.

Clean the filter

Air conditioner operates abnormally| Whether there’s interference, such as thunder, wireless devices, etc.| Disconnect power, put back power, and then turn on the unit again.
“Water flowing”

noise

| Air conditioner is turned on or turned off just now?| The noise is the sound of refrigerant flowing inside the unit, which is a normal phenomenon.
Cracking noise| Air conditioner is turned on or turned off just now?| This is the sound of friction caused by expansion and/or contraction of panel or other parts due to the change of temperature.

WARNING:

When below phenomenon occurs, please turn off air conditioner and disconnect power immediately, and then contact the dealer or qualified professionals for service.
- Power cord is overheating or damaged.
  There’s abnormal sound during operation.
- Air switch trips off frequently.
- Air conditioner gives off burning smell.
- Indoor unit is leaking.
Do not repair or refit the air conditioner by yourself
If the air conditioner operates under abnormal conditions

ERROR CODE

When air conditioner status is abnormal, temperature indicator on indoor unit will blink to dispaly corresponding error code. Please refer to below list for identification of error code

Error code	Troubleshooting
E5	It can be eliminated after restarting the unit. If not, please