Toshiba 1b fault code

Toshiba air conditioning

What the Toshiba 1b fault code means, from the manufacturer's own service literature, and the UK models it applies to.

What it means

TO outside-air sensor fault

Block 02 (outdoor PCB). The TO outdoor-temperature sensor is disconnected or short-circuit. Operation continues and the display does not flash — the error is only recorded.

Safety: Safe isolation before disconnecting sensors or working on the PCB.

Source: Toshiba service manual SVM-19001-3 (Seiya) / SVM-20015-4 (Shorai Edge) §11-4, Table 11-4-1

UK models this code applies to

Tap yours to open 1b on that machine.

Wall-mounted49

RAS-18E2KVG-E / RAS-18E2AVG-E RAS-077SKV-E7 / RAS-077SAV-E6 RAS-107SKV-E7 / RAS-107SAV-E6 RAS-137SKV-E7 / RAS-137SAV-E6 RAS-167SKV-E7 / RAS-167SAV-E5 RAS-B05E2KVG-E / RAS-05E2AVG-E RAS-B05S4KVG-E / RAS-05E2AVG-E RAS-B07E2KVG-E / RAS-07E2AVG-E RAS-B07G3KVSG-E / RAS-07J2AVSG-E1 RAS-B07G3KVSGB-E / RAS-07J2AVSG-E1 RAS-B07P2KVSG-E / RAS-07P2AVSG-E RAS-B07P2KVSGB-E / RAS-07P2AVSG-E RAS-B07S4KVG-E / RAS-07E2AVG-E RAS-B10E2KVG-E / RAS-10E2AVG-E RAS-B10P2KVSG(B)-E / RAS-10P2AVSG-E RAS-B10S4KVG-E / RAS-10E2AVG-E RAS-B13E2KVG-E / RAS-13E2AVG-E RAS-B13P2KVSG(B)-E / RAS-13P2AVSG-E RAS-B13S4KVG-E / RAS-13E2AVG-E RAS-B16E2KVG-E / RAS-16E2AVG-E RAS-B16G3KVSG-E / RAS-16J2AVSG-E1 RAS-B16G3KVSGB-E / RAS-16J2AVSG-E1 RAS-B16J2KVSG-E / RAS-16J2AVSG-E RAS-B16N4KVRG-E / RAS-16J2AVSG-E1 RAS-B16P2KVSG(B)-E / RAS-16P2AVSG-E RAS-B16S4KVG-E / RAS-16E2AVG-E RAS-B18G3KVSG-E / RAS-18J2AVSG-E1 RAS-B18G3KVSGB-E / RAS-18J2AVSG-E1 RAS-B18P2KVSG(B)-E / RAS-18P2AVSG-E RAS-B18S4KVG-E / RAS-18E2AVG-E RAS-B22G3KVSG-E / RAS-22J2AVSG-E1 RAS-B22G3KVSGB-E / RAS-22J2AVSG-E1 RAS-B22P2KVSG(B)-E / RAS-22P2AVSG-E RAS-B24G3KVSG-E / RAS-24J2AVSG-E1 RAS-B24G3KVSGB-E / RAS-24J2AVSG-E1 RAS-B24J2KVG-E / RAS-24J2AVG-E RAS-B24J2KVSG-E / RAS-24J2AVSG-E RAS-B24P2KVSG(B)-E / RAS-24P2AVSG-E RAS-B24S4KVG-E / RAS-24E2AVG-E RAS-M05G3KVSG-E RAS-M05G3KVSGB-E RAV-GM1101KRTP-E / RAV-GP1101AT-E · RAV-GP1101AT8-E RAV-HM901KRTP-E / RAV-GM901AT(J)P-E RAV-RM561KRTP-E RAV-RM801KRTP-E RAV-SM307KRTP-E RAV-SM407KRTP-E RAV-SM566KRT-E RAV-SM806KRT-E

Cassettes17

RAS-M10S4MUVG-E RAS-M13S4MUVG-E RAS-M16S4MUVG-E RAV-GM561UT-E RAV-GM801UT-E RAV-GM1101UT-E / RAV-GP1101AT-E RAV-GM1401UT-E / RAV-GP1401AT-E RAV-HM901UTP-E / RAV-GM901AT(J)P-E RAV-HM1101UTP-E RAV-HM1401UTP-E RAV-HM1601UTP-E / RAV-GM1601ATP-E · RAV-GM1601ATJP-E · RAV-GM1601AT8P-E · RAV-GM1601AT8JP-E RAV-RM561MUT-E RAV-RM561UTP-E RAV-RM801UTP-E RAV-RM1101UTP-E / RAV-GP1101AT-E · RAV-GP1101AT8-E RAV-RM1401UTP-E / RAV-GP1401AT-E · RAV-GP1401AT8-E RAV-RM1601UTP-E / RAV-GP1601AT8-E

Ducted10

RAV-HM901BTP-E / RAV-GM901AT(J)P-E RAV-HM1101BTP-E RAV-HM1401BTP-E RAV-HM1601BTP-E / RAV-GM1601ATP-E · RAV-GM1601ATJP-E · RAV-GM1601AT8P-E · RAV-GM1601AT8JP-E RAV-RM561BTP-E RAV-RM561SDT-E / RAV-GP561ATP-E · RAV-GP561ATW-E RAV-RM801BTP-E RAV-RM1101BTP-E / RAV-GP1101AT-E · RAV-GP1101AT8-E RAV-RM1401BTP-E / RAV-GP1401AT-E · RAV-GP1401AT8-E RAV-RM1601BTP-E / RAV-GP1601AT8-E

Ceiling suspended10

RAV-HM401CTP-E RAV-HM901CTP-E / RAV-GM901AT(J)P-E RAV-HM1101CTP-E RAV-HM1401CTP-E RAV-HM1601CTP-E RAV-RM561CTP-E RAV-RM801CTP-E RAV-RM1101CTP-E / RAV-GP1101AT-E · RAV-GP1101AT8-E RAV-RM1401CTP-E / RAV-GP1401AT-E · RAV-GP1401AT8-E RAV-RM1601CTP-E / RAV-GP1601AT8-E

Floor consoles1

RAS-B18J2FVG-E / RAS-18J2AVSG-E1

Floor-standing4

RAV-RM561FT-EN RAV-RM801FT-EN RAV-RM1101FT-EN / RAV-GP1101AT-E RAV-RM1401FT-EN / RAV-GP1401AT-E

Indoor and outdoor pairs1

RAS-077SKV-E6 / RAS-077SAV-E6

Outdoor units87

RAS-107SAV-E6 RAS-137SAV-E6 RAS-167SAV-E5 RAV-GM301ATP-E RAV-GM303ATJP-E RAV-GM303ATP-E RAV-GM401ATP-E RAV-GM403ATP-E RAV-GM561ATJP-E RAV-GM561ATP-E RAV-GM561ATP-E1 RAV-GM563ATP-E RAV-GM703ATP-E RAV-GM703ATP-TR RAV-GM801ATJP-E RAV-GM801ATP-E RAV-GM803ATP-E RAV-GM803ATP-TR RAV-GM903ATP-E RAV-GM1101AT8P-E RAV-GM1101ATJP-E RAV-GM1101ATP-E RAV-GM1103AT8P-E RAV-GM1103ATP-E RAV-GM1401AT8P-E RAV-GM1401ATJP-E RAV-GM1401ATP-E RAV-GM1403AT8P-E RAV-GM1403ATP-E RAV-GM1603AT8P-E RAV-GM1603ATP-E RAV-GM2241AT8-E RAV-GM2241AT8-E1 RAV-GM2243AT8P-E RAV-GM2801AT8-E RAV-GM2801AT8-E1 RAV-GM2803AT8P-E RAV-GP563ATP-E RAV-GP703ATP-E RAV-GP803ATP-E RAV-GP1103AT8P-E RAV-GP1103ATP-E RAV-GP1401AT-E1 RAV-GP1403AT8P-E RAV-GP1403ATP-E RAV-GP1603AT8P-E RAV-GP1603ATP-E RAV-GV561ATP-E RAV-GV801ATP-E RAV-GV1101AT8P-E RAV-GV1101ATP-E RAV-GV1401AT8P-E RAV-GV1401ATP-E RAV-GV1601AT8P-E RAV-GV1601AT8P-E1 RAV-GV1601ATP-E RAV-SM80ATP-E RAV-SM304ATP-E RAV-SM404ATP-E RAV-SM564ATP-E RAV-SM804ATP-E RAV-SM1104AT8P-E RAV-SM1104AT8P-E1 RAV-SM1104ATP-E RAV-SM1104ATP-E1 RAV-SM1404AT8P-E RAV-SM1404ATP-E RAV-SM1404ATP-E1 RAV-SM1603AT-E RAV-SM1603AT-E1 RAV-SM2244AT8-E RAV-SM2246AT8-E RAV-SM2804AT8-E RAV-SM2806AT8-E RAV-SP404ATP-E RAV-SP564ATP-E RAV-SP804ATP-E RAV-SP1104AT-E RAV-SP1104AT-E1 RAV-SP1104AT8-E RAV-SP1104AT8-E1 RAV-SP1404AT-E RAV-SP1404AT-E1 RAV-SP1404AT8-E RAV-SP1404AT8-E1 RAV-SP1604AT8-E RAV-SP1604AT8-E1

Other models30

1b on these comes from each model's own manual, which may not match the meaning above — tap yours to read it.

Wall-mounted33

RAS-05BKV-E / RAS-05BAV-E RAS-07BKV-E / RAS-07BAV-E RAS-10BKV-E / RAS-10BAV-E RAS-10G2KVP-E / RAS-10G2AVP-E RAS-13BKV-E / RAS-13BAV-E RAS-13G2KVP-E / RAS-13G2AVP-E RAS-16BKV-E / RAS-16BAV-E RAS-16G2KVP-E / RAS-16G2AVP-E RAS-18J2KVG-E / RAS-18J2AVG-E RAS-24E2KVG-E / RAS-24E2AVG-E RAS-B05J2KVG-E / RAS-05J2AVG-E RAS-B07J2KVG-E / RAS-07J2AVG-E RAS-B10G3KVSG-E / RAS-10J2AVSG-E1 RAS-B10G3KVSGB-E / RAS-10J2AVSG-E1 RAS-B10J2KVG-E / RAS-10J2AVG-E RAS-B10J2KVSG-E / RAS-10J2AVSG-E RAS-B10N3KV2-E1 / RAS-10N3AV2-E1 RAS-B10N3KVP-E / RAS-10N3AVP-E RAS-B10N4KVRG-E1 / RAS-10J2AVSG-E1 RAS-B10S4KVPG-E / RAS-10S4AVPG-E RAS-B13G3KVSG-E / RAS-13J2AVSG-E1 RAS-B13G3KVSGB-E / RAS-13J2AVSG-E1 RAS-B13J2KVG-E / RAS-13J2AVG-E RAS-B13J2KVSG-E / RAS-13J2AVSG-E RAS-B13N3KV2-E1 / RAS-13N3AV2-E1 RAS-B13N3KVP-E / RAS-13N3AVP-E RAS-B13N4KVRG-E / RAS-13J2AVSG-E1 RAS-B13S4KVPG-E / RAS-13S4AVPG-E RAS-B16J2KVG-E / RAS-16J2AVG-E RAS-B16N3KV2-E1 / RAS-16N3AV2-E RAS-B16N3KVP-E / RAS-16N3AVP-E RAS-B18J2KVSG-E / RAS-18J2AVSG-E RAS-B18S4KVPG-E / RAS-18S4AVPG-E

Ducted10

RAS-M07G3DV-E RAS-M07U2DVG-E RAS-M10G3DV-E RAS-M10U2DVG-E RAS-M13G3DV-E RAS-M13U2DVG-E RAS-M16G3DV-E RAS-M16U2DVG-E RAS-M22U2DVG-E RAS-M24U2DVG-E

Floor consoles2

RAS-B10J2FVG-E / RAS-10J2AVSG-E1 RAS-B13J2FVG-E / RAS-13J2AVSG-E1

Multi-split outdoor units13

RAS-2M10U2AVG-E RAS-2M14S3AV-E RAS-2M14U2AVG-E RAS-2M18S3AV-E RAS-2M18U2AVG-E RAS-3M18S3AV-E RAS-3M18U2AVG-E RAS-3M26S3AV-E RAS-3M26U2AVG-E RAS-4M27S3AV-E RAS-4M27U2AVG-E RAS-5M34S3AV-E RAS-5M34U2AVG-E

Outdoor units21

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