Outline Of Judgment; Troubleshooting - Toshiba Carrier RAV-SP180AT2-UL Service Manual

8-2. Troubleshooting

8-2-1. Outline of judgment

The primary judgment to check whether a trouble occurred in the indoor unit or outdoor unit is carried out with
the following method.
Method to judge the erroneous position by flashing indication on the display part of the indoor unit
(sensors of the receiving part)
The indoor unit monitors the operating status of the air conditioner, and the blocked contents of self-diagnosis
are displayed restricted to the following cases if a protective circuit works.
Lamp indication
Operation Timer Ready
No indication at all
Operation Timer Ready
Flash
Operation Timer Ready
Flash
Operation Timer Ready
Alternate flash
Operation Timer Ready
Alternate flash
∗1: These are representative examples and the check code differs according to the outdoor unit to be combined.
Check code
— Power supply OFF or miswiring between lamp indication unit and indoor unit
E01 Receiving error
E02 Sending error
E03 Communication stop
E08 Duplicated indoor unit No.
E09 Duplicated master units of remote controller
E10 Communication error between CPUs on indoor unit P.C. board
Wire connection error between indoor units, Indoor power OFF
E18
(Communication stop between indoor header and follower)
Miswiring between indoor unit and outdoor unit or connection erorr
E04
(Communication stop between indoor and outdoor units)
P10 Overflow was detected.
P12 Indoor DC fan error
P03 Outdoor unit discharge temp. error
P04 Outdoor high pressure system error
P05 Negative phase detection error
P07 Heat sink overheat error
P15 Gas leak detection error
P19 4-way valve system error (Indoor or outdoor unit judged.)
P20 Outdoor unit high pressure protection
P22 Outdoor unit: Outdoor unit error
P26 Outdoor unit: Inverter Idc operation
P29 Outdoor unit: Position detection error
Stopped because of error of other indoor unit in a group
P31
(Check codes of E03/L03/L07/L08)
: Go off,
Cause of trouble occurrence
⎫
⎫
Receiving unit
⎬
⎪
⎭
⎬
⎪
⎭
⎫
⎪
Protective device of indoor unit worked.
⎬
⎪
⎭
⎫
⎪
⎬
⎪
⎭
– 47 –
Revised : Feb. 2010
: Go on, : Flash (0.5 sec.)
Miswiring or wire connection error
between receiving unit and indoor unit
⎫
Setup error
⎬
⎭
⎫
Protective device of
⎬
outdoor unit worked.
⎭
Outdoor unit error
⎫
⎪
Protective device of
⎬
outdoor unit worked.
⎪
⎭
∗1
∗1