DOWNLOAD Panasonic U-2E15GBE / U-2E18CBPG Service Manual ↓ Size: 2.48 MB | Pages: 47 in PDF or view online for FREE

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• There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor unit. The indoor unit

will only operate when received signal with same transmission code from remote control. This could prevent signal interference
when there are 2 or more indoor units installed nearby together.

• To change remote control transmission code, short or open jumpers at the remote control printed circuit board.

• To check remote control transmission code:

- Press for more than 10 seconds by using pointer

• To change the air quality sensor:

- Press and release by using pointer
- Press the Timer Decrement button to select sensitivity:

1. Low sensitivity
2. Standard (Default)
3. Hi sensitivity

- Confirm setting by pressing Timer Set button, a “beep” sound will be heard. LCD returns to original display after 2 seconds.
- LCD returns to original display if remote control does not operate for 30 seconds.

• To change the remote control time format:

- Press for more than 10 seconds

• To clear and restore the remote control setting to factory default.

- Press once to clear the memory.

• To restore the unit’s setting to factory default.

-  Press once to restore the unit’s setting.

• To change indoor unit indicators’ intensity:

- Press continuously for 10 seconds.

• To change remote control display from Degree Celsius (°C) to Degree Fahrenheit (°F)

- Press continuously for 10 seconds.

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In order to diagnose malfunctions, make sure that there are no
electrical problems before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of a compressor and a fan.
The normal outlet air temperature and pressure of the
refrigeration cycle depends on various conditions, the standard
values for them are shown in the table to the right.

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• Carry out the measurement of pressure, electric current, and temperature fifteen minutes after an operation is started. 

• Once abnormality has occurred during operation, the unit will stop its operation, and Timer LED blinks.
• Although Timer LED goes off when power supply is turned off, if the unit is operated under a breakdown condition, the LED will

light up again.

• In operation after breakdown repair, the Timer LED will no more blink. The last error code (abnormality) will be stored in IC

memory.

1. Timer LED starts to blink and the unit automatically stops the operation.
2. Press the CHECK button on the remote controller continuously for 5 seconds.
3.  “- -” will be displayed on the remote controller display. Note: Display only for “- -”. (No transmitting signal, no receiving sound

and no Power LED blinking.)

4. Press the “TIMER” 

 or 

 button on the remote controller. The code “H00” (no abnormality) will be displayed and signal will

be transmitted to the main unit.

5. Every press of the button (up or down) will increase abnormality numbers and transmit abnormality code signal to the main

unit.

6. When the latest abnormality code on the main unit and code transmitted from the remote controller are matched, power LED

will light up for 30 seconds and a beep sound (continuously for 4 seconds) will be heard. If no codes are matched, power LED
will light up for 0.5 seconds and no sound will be heard.

7. The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5 seconds or operating

the unit for 30 seconds.

8. The LED will be off if the unit is turned off or the RESET button on the main unit is pressed.

Condition of the air 

conditioner

Cooling Mode

Heating Mode

Low Pressure

High Pressure

Electric current 

during operation

Low Pressure

High Pressure

Electric current 

during operation

Inssufficient refrigerant 

(gas leakage)

Clogged capillary tube or 

strainer

Short circuit in the indoor 

unit

Heat radiation deficiency 

of the outdoor unit

Inefficient compression

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1. Turn power on.
2. Press the CHECK button on the remote controller continuously for 5 seconds.
3. “- -” will be displayed on the remote controller display. Note: Display only for “- -”. (No transmitting signal, no receiving sound

and no Power LED blinking.)

4. Press the “TIMER” 

 or 

 button on the remote controller. The code “H00” (no abnormality) will be displayed and signal will

be transmitted to the main unit. The power LED lights up. If no abnormality is stored in the memory, three beeps sound will be
heard.

5. Every press of the button (up or down) will increase abnormality numbers and transmit abnormality code signal to the main

unit.

6. When the latest abnormality code on the main unit and code transmitted from the remote controller are matched, power LED

will light up for 30 seconds and a beep sound (continuously for 4 seconds) will be heard. If no codes are matched, power LED
will light up for 0.5 seconds and no sound will be heard.

7. The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5 seconds or operating

the unit for 30 seconds.

8. The same diagnosis can be repeated by turning power on again.

1. Turn power on.
2. Press the AUTO button for 5 seconds (A beep receiving sound) on the main unit to operate the unit at Forced Cooling

Operation modes.

3.  Press the CHECK button on the remote controller for about 1 second with a pointed object to transmit signal to main unit. A

beep sound is heard from main unit and the data is cleared.

1. Press the AUTO button (A beep receiving sound) on the main unit to operate the unit. (Remote control will become possible.)
2. The unit can temporarily be used until repaired.

Error Code

Operation 

Temporary items

H27, H28

Cooling, Heating 

Emergency operation with limited power