Specifications

119
Error Code Meaning of error code and detection method Case Judgment and action
F3
(5202)
63L connector open
Abnormal if 63L connector circuit is open
for three minutes continuously after power
supply.
63L: Low-pressure switch
(PUH-P5, 6YGA and PU-P5, 6YGA Only.)
1 Disconnection or contact fail-
ure of 63L connector on out-
door controller board
2 Disconnection or contact fail-
ure of 63L
3 63L is working due to refrigerant
leakage or defective parts.
4 Defective outdoor controller
board
1 Check connection of 63L connector on
outdoor controller board.
Refer to page 131.
2 Check the 63L side of connecting wire.
3 Check refrigerant pressure.
Charge additional refrigerant.
Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller board.
F7
(4118)
Reverse phase detector circuit
(controller board) fault
Abnormal if some of each phase detection
signal is not input three seconds after
power supply.
Detective outdoor controller
board
Replace outdoor controller board.
F9
(4119)
2 or more connectors open
Abnormal if two more out of connector
(63L, 49C, 51CM) circuits are open for
three minutes continuously after power on.
1 Disconnection or contact fail-
ure of connector (63L, 49C,
51CM) on outdoor controller
board
2 Disconnection or contact fail-
ure of (63L, 49C, 51C).
3 Defective (63L, 49C, 51C)
(defective parts)
4 Defective outdoor controller
board.
1 Check connection of (63L, 49C, 51CM)
connector on outdoor controller board.
Refer to page 131.
2 Check the (63L, 49C, 51CM) side of
connecting wire.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller board.
F4
(4124)
The connector of 49C is open
Consider the unit abnormal when the cir-
cuit of connector (49C) remains open for
three consecutive minutes with the power
on.
49C: Inner thermostat (Compressor)
(PUH-P5, 6YGA and PU-P5, 6YGA Only.)
1 The connector of 49C on out-
door controller board has con-
tact failure or disconnection.
2 The switch of 49C has contact
failure or disconnection.
3 Power supply was turned on
when 49C has been tripped.
4 49C has been tripped (defec-
tive parts).
5 Outdoor controller board is
defective.
1 Check connection of 49C connector on
outdoor controller board.
Refer to page 131.
2 Check the 49C side of connecting wire.
34
Check the continuity by tester.
Replace defective parts.
5 Replace the outdoor controller board.
FA
(4108)
51CM connector open
Abnormal if 51CM connector circuit is open
for three minutes continuously after power
on.
51CM: Thermal Relay
1 Disconnection or contact
failure of 51CM connector
on outdoor controller board
2 Disconnection or contact
failure of 51CM
3 Defective 51CM (defective
parts)
4 Defective outdoor controller
1 Check connecting wire.
2 Check connecting wire.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller board.
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