Diagnostic Procedure For Each Check Code - Toshiba Carrier RAV-SP180AT2-UL Service Manual

8-2-4. Diagnostic Procedure for Each Check Code (Outdoor Unit)
RAV-SP180AT2-UL
1) This section describes the diagnostic method for each check code displayed on the wired remote controller.
2) When "APPLICATION CONTROL KIT" (TCB-PCOS1UL) 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.
CODE APPLICATION CONTROL KIT
No. LED display
[E04]
[F04] D01 D02
(Red) (Yellow) (Yellow) (Yellow)
[F06] ∗ 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.
D01 D02
(Red) (Yellow) (Yellow) (Yellow)
D01 D02
(Red) (Yellow) (Yellow) (Yellow)
LED display legend: Go off,
(Part without special mention indicates a part of the outdoor unit.)
— [Indoor / Outdoor communication error]
and inter-unit wires (1, 2, 3) correct?
Is the compressor abnormally heated?
D03 D04 [Discharge temp. sensor (TD) error]
Is resistance value of TD sensor correct?
D03 D04 [Heat exchanger temp. sensor (TE) error]
Is resistance value of TE sensor correct?
D03 D04 [Suction temp. sensor (TS) error] → → → → → Refer to column of [F12].
Go on, Flash (5Hz)
Check / Countermeasures
Is setting of group address
on the remote controller correct?
YES
Are inner wiring of the indoor unit
YES
Is wiring of the
outdoor terminal block correct?
YES
Is connection of
case thermo (CN500) correct?
YES
Does the case thermo operate?
NO
Is connection of CN601 correct?
YES
Is connection of CN600 correct?
YES
– 55 –
NO
Check CODE No. [14].
NO
Correct wiring
and inter-unit wires.
NO
Correct wiring
of terminal block.
NO
Correct connection
of connector.
Check and correct charged
YES
refrigerant amount.
Check outdoor P.C. board.
Defect → Replace
NO
Correct connector.
Sensor error → Replace
Check outdoor P.C. board.
Defect → Replace
NO
Correct connector.
Sensor error → Replace
Check outdoor P.C. board.
Defect → Replace