Carrier P.30

High

Pro-Dialog+ (30RB060-390) — Master/Slave communication failure.

Carrier P.30: Master/Slave communication failure. This fault noticeably affects operation.

Possible causes

CCN wiring faulty or control power to Main Base Board missing.

Check steps

Check CCN wiring, verify control power at Master/Slave boards, confirm configuration.

Affected parts

CCN-Kabel
Hauptplatine

Safety note

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Source: Carrier AquaSnap 30RB060-390 Pro-Dialog+ Controls, Start-Up, Operation, Service and Troubleshooting Instructions (Form 30RB-7T), Table 46 Alarm Codes + alarm descriptions, p.63-78

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

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