Danfoss E20

High

AK-CC 550A — Pressure transducer error (Press.Xdcr Error)

Danfoss E20: Pressure transducer error (Press.Xdcr Error) This fault noticeably affects operation.

Possible causes

Pressure transducer defective, or cable broken/short-circuited
Signal outside the measuring range defined in O20/O21 (transducer range)

Check steps

Check the wiring and signal of the pressure transducer (Evap Pressure, u25)
Match parameters O20 (min transducer range) and O21 (max transducer range) with the fitted transmitter

Affected parts

Pressure transducer (evaporator)
Signal cable to S1/pressure input

Safety note

Depressurize the refrigerant circuit and de-energize before replacing the pressure transducer.

Source: Danfoss resmi servis kilavuzu (bagimsiz cift-dogrulandi) — Danfoss "Pocket Guide, AK-CC 550A" (Service Guide, ADAP-KOOL Refrigeration Control System), doc. ref. AX278928624187en-000101, © Danfoss | ADAP-KOOL | 2018.08, page 2, "Alarm Codes" table: "E20 Press.Xdcr Error"

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

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