Fault Codes / Mitsubishi Electric / 1301

Mitsubishi Electric 1301

High

PURY-(P)200/250YMF-C, PUHY-(P)200/250YMF-C — Low pressure abnormality — suction pressure before starting is below 1.0 kg/cm²G (0.098 MPa)

Mitsubishi Electric 1301: Low pressure abnormality — suction pressure before starting is below 1.0 kg/cm²G (0.098 MPa) This fault noticeably affects operation.

Possible causes

Internal pressure dropping due to a gas leak
Low-pressure sensor defective or wiring disconnected

Check steps

Refer to the low-pressure sensor failure judgment procedure
Check refrigerant amount and system tightness for leaks

Affected parts

Low pressure sensor
Pressure sensor connector/wiring

Safety note

Perform refrigerant work only with recovery equipment; disconnect power before servicing.

Source: Mitsubishi Electric resmi servis kilavuzu (bagimsiz cift-dogrulandi) — Mitsubishi Electric CITY MULTI Service Handbook (PURY/PUHY-(P)200/250YMF-C serisi ve akraba PUHY/PURY modelleri, ör. PUHY-P200, PURY-HP72) — Checking code 1301: Niederdruck-Störung. Kontrol/algılama yöntemi: Kompresör "Stop Mode"tan ilk kez başlatılırken, başlatma öncesi alçak basınç sensörü okuması 0,098 MPa (~1,0 k…

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.

Look up in Enthalio →

Related fault codes

Overcharged refrigerant abnormality1500 Indoor/outdoor communication error.E6 High discharge temperature — compressor overheU2 Outdoor thermistor fault (open/short).U4 Pipe temperature error (often defrost/thermistP8 Serial / panel communication error.0403