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Is setting of group address
on the remote controller correct?
Check outdoor P.C. board.
Defect → Replace
Is connection of CN601 correct?
Is resistance value of TD sensor correct?
Correct connector.
Sensor error → Replace
Check outdoor P.C. board.
Defect → Replace
Is connection of CN600 correct?
Is resistance value of TE sensor correct?
Correct connector.
Sensor error → Replace
Check outdoor P.C. board.
Defect → Replace
Are inner wiring of the indoor unit
and inter-unit wires (1, 2, 3) correct?
Is wiring of the
outdoor terminal block correct?
Correct wiring
and inter-unit wires.
Check item code [14].
Is connection of
case thermo (CN500) correct?
Correct wiring
of terminal block.
Does the case thermo operate?
Is the compressor abnormally heated?
Correct connection
of connector.
Check and correct charged
refrigerant amount.
YES
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
NO
YES
NO
10-2-5. Diagnostic Procedure for Each Check Code (Outdoor Unit)
1) This section describes the diagnostic method for each check code displayed on the wired remote controller.
2) When “APPLICATION CONTROL KIT” (TCB-PCOS1E2) sold separately is connected, the error contents
can be judged by LED on the APPLICATION CONTROL KIT. In this case, turn off both bit 1 and 2 of DIP
switch 01 on the All-purpose control kit.
Check
code
[E04]
APPLICATION CONTROL KIT
LED display
—
Check / Countermeasures
(Part without special mention indicates a part of the outdoor unit.)
[Indoor / Outdoor communication error]
[F04]
[F06]
D01 D02 D03 D04
(Red) (Yellow) (Yellow) (Yellow)
¡¡
ll
D01 D02 D03 D04
(Red) (Yellow) (Yellow) (Yellow)
¡
lll
D01 D02 D03 D04
(Red) (Yellow) (Yellow) (Yellow)
ll
¡
l
[Discharge temp. sensor (TD) error]
∗ There is a possibility that any of the following items is not correct.
Checking LED on the APPLICATION CONTROL KIT enables you to judge what is incorrect.
[Suction temp. sensor (TS) error]
→→
→→
→ Refer to column of [F12].
LED display legend:
l
Go off,
¡
Go on,
¥
Flash (5Hz)
<In case of SP40 to 56>
[Heat exchanger temp. sensor (TE) error]