Toshiba RAV-SP1404AT8Z-TR, RAV-SP1104AT8ZG-TR service manual Troubleshooting, Outline of judgment

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.

: Go off,

: Go on,

: Flash (0.5 sec.)

Lamp indication

Check code

Cause of trouble occurrence

Operation

Timer

Ready

—

Power supply OFF or miswiring between receiving unit and indoor unit

No indication at all

E01

Receiving error ⎫

⎫

⎬ Receiving unit

⎪

Miswiring or wire connection error

E02

Sending error ⎭

⎬

between receiving unit and indoor unit

⎪

E03

Communication stop

Operation

Timer

Ready

⎭

E08

Duplicated indoor unit No.

⎫

Setup error

⎬

Flash

E09

Duplicated header 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 master and follower or between main

and sub indoor twin)

Operation

Timer

Ready

E04

Miswiring between indoor unit and outdoor unit or connection erorr

(Communication stop between indoor and outdoor units)

Flash

Operation

Timer

Ready

P01

Overflow was detected.

⎫

Protective device of indoor unit worked.

P10

Indoor DC fan error

⎬

⎭

Alternate flash

P12

P03

Outdoor unit discharge temp. error

⎫

Protective device of

∗1

⎬

outdoor unit worked.

P04

Outdoor high pressure system error ⎭

P05

Negative phase detection error

⎫

Heat sink overheat error

⎪

Outdoor unit error

P07

⎬

Gas leak detection error

⎪

Operation

Timer

Ready

P15

⎭

P19

4-way valve system error (Indoor or outdoor unit judged.)

Alternate flash

P20

Outdoor unit high pressure protection

P22

Outdoor unit: Outdoor unit error

⎫

Outdoor unit: Inverter Idc operation

⎬⎪

Protective device of

∗1

P26

⎪

outdoor unit worked.

P29

Outdoor unit: Position detection error

⎭

P31

Stopped because of error of other indoor unit in a group

(Check codes of E03/L03/L07/L08)

∗1: These are representative examples and the check code differs according to the outdoor unit to be combined.

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