9-2. Troubleshooting

9-2-1. 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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E09

Duplicated master units of remote controller

 

 

Flash

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

P10

 

 

 

 

 

 

 

 

 

 

 

 

 

Overflow was detected.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor DC fan error

Protective device of indoor unit worked.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P12

 

 

 

 

 

 

 

Alternate flash

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P03

Outdoor unit discharge temp. error

 

Protective device of

∗1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P04

Outdoor high pressure system error

outdoor unit worked.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P05

Negative phase detection error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P07

Heat sink overheat error

 

 

Outdoor unit error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gas leak detection error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation

Timer

Ready

P15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P19

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P20

Outdoor unit high pressure protection

 

 

 

 

 

Alternate flash

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P22

Outdoor unit: Outdoor unit error

 

 

 

 

 

 

 

 

 

 

 

 

Protective device of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P26

Outdoor unit: Inverter Idc operation

 

∗1

 

 

 

 

 

 

 

outdoor unit worked.

 

 

 

 

 

 

 

Outdoor unit: Position detection error

 

 

 

 

 

 

 

P29

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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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Toshiba RAV-SM804UT-E Troubleshooting, Outline of judgment, Lamp indication Check code Cause of trouble occurrence
Page 67 Page 69

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