Breakdown Self Diagnosis Function | Panasonic CU-E9NKUA, CU-E12NKUA

16.2Breakdown Self Diagnosis Function

16.2.1Self Diagnosis Function (Three Digits Alphanumeric Code)

Once error 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 ON again.

In operation after breakdown repair, the Timer LED will not blink. The last error code (abnormality) will be stored in IC memory.

16.2.2To Make a Diagnosis

1Timer LED starts to blink and the unit automatically stops the operation.

2Press the CHECK button on the remote control continuously for 5 seconds.

3“- -“ will be displayed on the remote control display.

Note: Display only for “- -“ (No signal transmission, no receiving sound and no Power LED blinking)

4Press the TIMER ▲ or ▼ button on the remote control. The code “H00” (no abnormality) will be displayed and signal will be transmit to the main unit.

5Each press of the button (▲ or ▼) will increase error code number and transmit error code signal to the main unit.

6When the latest abnormality code on the main unit and code transmitted from the remote control 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.

7The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5 seconds or operating the unit for 30 seconds.

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

16.2.3To Display Memorized Error Code (Protective Operation)

1Turn power on.

2Press the CHECK button on the remote control

3“- -“ will be displayed on the remote control display.

Note: Display only for “- -“ (No signal transmission, no receiving sound and no Power LED blinking)

4Press the TIMER ▲ or ▼ button on the remote control. The code “H00” (no abnormality) will be displayed and signal will be transmit to the main unit.

5Each press of the button (▲ or ▼) will increase error code number and transmit error code signal to the main unit.

6When the latest abnormality code on the main unit and code transmitted from the remote control 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.

7The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5 seconds or operating the unit for 30 seconds.

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

16.2.4To Clear Memorized Error Code after Repair (Protective Operation)

1Turn power on (in standby condition).

2Press the AUTO button for 5 seconds (a “beep” sound is heard) on the main unit to operate the unit at Forced Cooling Operation Mode.

3Press the CHECK button on the remote control for about 1 second with a pointed object to transmit signal to main unit. A “beep” sound is heard, and the Error Code is cleared.

16.2.5Temporary Operation (Depending On Breakdown Status)

1Press the Auto OFF/ON button on the main unit (a “beep” sound is heard) to operate the unit. (Remote control is enable again).

2The unit can be temporarily be used until repaired.

Error Code	Operation	Temporary items
H23	Cooling	Emergency Operation
H27, H28	Cooling, Heating	with limited power

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