Breakdown Self Diagnosis Function - Panasonic CS-E18NKUA Service Manual

15.2

Breakdown Self Diagnosis Function

15.2.1 Self 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.
15.2.2 To Make a Diagnosis
1 Timer LED starts to blink and the unit automatically stops the
operation.
2 Press 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)
4 Press 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.
5 Each press of the button (▲ or ▼) will increase error code number
and transmit error code signal to the main unit.
6 When 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.
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.
15.2.3 To Display Memorized Error Code (Protective Operation)
1 Turn power on.
2 Press 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)
4 Press 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.
5 Each press of the button (▲ or ▼) will increase error code number and transmit error code signal to the main
unit.
6 When 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.
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.
15.2.4 To Clear Memorized Error Code after Repair (Protective Operation)
1 Turn power on (in standby condition).
2 Press the AUTO button for 5 seconds (a "beep" sound is heard) on the main unit to operate the unit at
Forced Cooling Operation Mode.
3 Press 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.
15.2.5 Temporary Operation (Depending On Breakdown Status)
1 Press the Auto OFF/ON button on the main unit (a "beep" sound is heard) to operate the unit.
(Remote control is enable again).
2 The unit can be temporarily be used until repaired.
Error Code
H23
H27, H28
Operation Temporary items
Cooling Emergency Operation
with limited power
Cooling, Heating
44