Mitsubishi PK12FK Instruction Manual page 45

2. SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER
2-1 When malfunction occurs during operation·····PK12/18/24/30/36FK
When a malfunction occurs, the indoor and outdoor units stop and the malfunction is displayed on the LCD of the remote
controller.
(A) ON the set temperature display part, "CHECK" appears, and
the unit address and the check code are displayed alternately
at one-second intervals. (Check mode)
Example Alternately
displayed
CHECK
0
°C
(2) When one remote controller controls several units in the group control,
the LCD shows the unit address and check code of the first malfunc-
tioning unit.
(3) To cancel the check mode, press the POWER
remote ON/OFF control, press the remote ON/OFF switch. In cen-
tralised control, turn OFF the POWER ON/OFF button of centralised
controller.
NOTE: The latest check code is memorised, even if the check mode is cancelled by the way mentioned above. It takes
60 seconds maximum to display the memorised check code.
2-2 How to use the self diagnostic function for service·····PK12/18/24/30/36FK
A. For normal control with one unit and one remote controller
(1) Pressing the
CHECK
(2) During the self diagnostic function, "CHECK" appears at two positions on the remote controller display. Then, at least
10 seconds later, the unit address and the check code is alternately displayed at one-second intervals.
(3) Check and repair the unit according to the check code. (Refer to page OC196A-47.)
2-3 For group control using one remote controller·····PK12/18/24/30/36FK
(1) Press the
WARMER
address. Each time
button is pressed, the unit address goes back by one.
The check code and the unit address, appear alternately.
(2) The check code "U8" means no malfunction has occurred since installation.
The check code "EO" means the following conditions:
The unit address displayed on the remote controller does not apply to any unit.
power is not supplied to the unit.
Signal transmitting / receiving circuit is abnormal.
(3) Check and repair the unit according to the check code. (Refer to page OC196A-47.)
CHECK
p1
°C
ON/OFF
button on the remote controller twice starts the self diagnostic function.
or button on the remote controller to advance or go back to the unit
COOLER
button is pressed, the unit address advances by one. Each time
WARMER
OC196A-45
CHECK mode
button. In
•CENTRALLY CONTROLLED•
ON/OFF
POWER
ON
DRY
MODE SELECT FAN COOL/DRY
COOL
FAN
CHECK SET
WARMER COOLER
SET TEMP F TEMPERATURE
TIMER OFF
AUTO STOP TIMER MODE HOURS
HR
AUTO START
FAN SPEED LOW/HIOGH
LOW HIGH
AIR
SWING
UP/DOWN
STOP
DISCHARGE
F
AUTO RETURN
CHECK TEST RUN CHECK TEST RUN
MITSUBISHI ELECTRIC
H button
COOLER