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Table 9
Microcomputer
Transmission
normal monitor
normal monitor
HAP(H1P)
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 his-
tory disappears, after the trouble code goes on and off twice, followed by the code "00"(normal).
The display changes from the inspection mode to the normal mode.
3. Depending on the model or the conditions, it may carry out an emergency shut-down.
4. If the HBP(H2P) is off, the branch wiring between each of the indoor and outdoor units may either be incorrectly
connected or broken. Before taking any of the diagnostic steps listed above, check the branch wiring.
If the HBP(H2P) is off on an inverter, there is a possibility that the fuse on the outdoor unit's PC board is
burnt out.
5. Cut off the power and wait for 5 seconds or longer. Turn on the power again and see if the LED is in the
same state again.
10-3 MALFUNCTION CODE
• For places where the malfunction code is left blank, the "
tem continues operating, be sure to inspect the system and make repairs as necessary.
• Depending on the type of indoor or outdoor unit, the malfunction code may or may not be displayed.
Code
A1
Indoor unit's PC board faulty
A3
Drain water level abnormal
A6
Indoor fan motor overloaded, overcurrent or locked
AF
Humidifier faulty
Air cleaner faulty
AH
Only the air cleaner does not function.
Type set improper
AJ
Capacity data is wrongly proset. Or there is nothing programmed in the data hold IC.
C4
Sensor for heat exchanger lamp is fault
C9
Sensor for suction air lamp is fault
Sensor for remote controller is fault
CJ
The remote controller thermistor does not function, but the system thermo run is possi-
ble.
E0
Action of safety device (outdoor unit)
E1
Outdoor unit's PC board faulty (outdoor unit)
E3
High pressure abnormal(outdoor unit)
21
HBP(H2P)
Miswiring between the indoor and outdoor units
If the outdoor unit HAP(H1P) does not light, diagnose the outdoor
unit. If it is flashed, it is due to either miswiring or malfunction of the
indoor or outdoor unit PC board assembly.
(NOTE 4)
Abnormal power supply, malfunction of PC board assembly or
disconnection between the indoor and outdoor units (NOTE 5)
Details
FAY-L, FAYP-L, FAQ-BUV1B
Indoor unit is normal
Malfunction of the indoor unit PC board (NOTE 5)
" indication is not displayed. Though the sys-
Malfunction/Remarks
Diagnose the outdoor unit
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