Daikin FXHQ12MVJU, Installation Manual

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(3) Press the OPERATION MODE SELECTOR button and
upper figure of the malfunction code flashes.
(4) Continue pressing the PROGRAMMING TIME button
unit it makes 2 short beeps and find the upper code.
(5) Press the OPERATION MODE SELECTOR button and
lower figure of the malfunction code flashes.
(6) Continue pressing the PROGRAMMING TIME button
unit it makes a long beep and find the lower code.
• A long beep indicate the malfunction code.
NOTE
1. In case wired remote controller. Press the INSPECTION /
TEST OPERATION button on remote controller, “ ”
starts flashing.
2. Keep down the ON/OFF button for 5 seconds or longer in
the inspection mode and the above trouble history disap-
pears, after the trouble code goes on and off twice, followed
by the code “ ”(normal).
The display changes from the inspection mode to the nor-
mal mode.
12-2 MALFUNCTION CODE
• For places where the malfunction code is left blank, the “ ”
indication is not displayed. Though the system continues
operating, be sure to inspect the system and make repairs as
necessary.
• Depending on the type of indoor or outdoor unit, the malfunc-
tion code may or may not be displayed.
Order Operation
(1) Open gas side stop valve.
(2) Open liquid side stop valve.
(3) Electrify crank case heater for 6 hours.
(4)
Set to cooling with the remote controller and push “ ”
button to start operation.
(5)
Push“ ”button twice and operate in TEST OPERA-
TION MODE for 3 minutes.
(6)
Push“ ”button and confirm its operation.
(7)
Push“ ”button and operate normally.
(8) Confirm its function according to the operation manual.
Code Malfunction/Remarks
A1 Indoor unit’s PC board faulty
A3 Condensate level abnormal
A6 Indoor fan motor overloaded, overcurrent or locked.
A7 Air flow direction adjust motor is fault.
A9 Drive for electronic expansion valve is fault.
AJ
Type set improper
Capacity data is wrongly preset. Or there is nothing pro-
grammed in the data hold IC.
C4 Sensor R2T for heat exchanger temperature is fault.
C5 Sensor R3T for heat exchanger temperature is fault.
C9 Sensor R1T for suction air temperature is fault.
CJ
Sensor for remote controller is fault.
The remote controller thermistor does not function, but
the system thermo run is possible.
E3 High pressure abnormal (outdoor unit)
E4 Low pressure abnormal (outdoor unit)
ON/OFF
TEST
SWING
TEST
E5 Compressor motor lock malfunction
E7
Outdoor fan motor lock malfunction
Outdoor fan instantaneous overcurrent malfunction
E9 Electronic expansion valve faulty (outdoor unit)
F3 Discharge pipe temperature abnormal (outdoor unit)
F6 The refrigerant is overcharged.
H9 Outdoor air thermistor faulty (outdoor unit)
J3 Discharge pipe thermistor faulty (outdoor unit)
J5 Suction pipe thermistor faulty (outdoor unit)
J6 Heat exchanger thermistor faulty (outdoor unit)
J9 Sensor for heat exchanger is fault.
JA Sensor for high pressure is fault.
JC Sensor for low pressure is fault.
L4
Overheated heat-radiating fin (outdoor)
Inverter cooling defect.
L5
Instantaneous overcurrent (outdoor)
Possible earth fault or short circuit in the compressor
motor.
L8
Electric thermal (outdoor)
Possible electrical overload in the compressor or cut line
in the compressor motor.
L9
Stall prevention (outdoor)
Compressor possibly locked.
LC
Transmission malfunction between the outdoor control
units’ inverters (outdoor)
P1 Open-phase (outdoor)
P3 PC board temperature sensor malfunction (outdoor)
P4
Heat-radiating fin temperature sensor malfunction
(outdoor)
PJ
Type set improper (outdoor unit)
Capacity data is wrongly preset. Or there is nothing pro-
grammed in the data hold IC.
U0 Suction pipe temperature abnormal
U2
Power source voltage malfunction
Includes the defect in K1M.
U3 The check operation has not performed.
U4
UF
Transmission error (indoor unit – outdoor unit)
Miswiring between indoor and outdoor units or malfunc-
tion of the PC board mounted on the indoor and the out-
door units.
If UF is shown, the wire between the indoor and outdoor
units is not properly wired. Therefore, immediately dis-
connect the power supply and correct the wire. (The
compressor and the fan mounted on the outdoor unit
may start operation independent of the remote controller
operation.) The power is not supplied to outdoor unit.
U9 Same transmission for in / outdoor unit is fault.
UA
Miss setting for multi system
Setting is wrong for selector switch of multi-system. (see
switch SS2 on the main unit’s PC board)