Mitsubishi Electric EF

Low

PUY-P42, 48, 125VKA.TH / PUY-M125VKA-SG — Check code is not defined (typically wrong remote controller type or noise interference)

Mitsubishi Electric EF: Check code is not defined (typically wrong remote controller type or noise interference) This fault is usually minor, but points to an underlying cause.

Possible causes

Wrong remote controller type used (not MA remote controller PAR-21MAA)
Electrical noise on the remote controller transmission wire

Check steps

Check if the remote controller is an MA remote controller (PAR-21MAA)
Check for noise interference on remote controller and connecting wiring, then power cycle

Affected parts

Remote controller (PAR-21MAA)
Transmission wiring

Safety note

Disconnect power supply before working on the wiring.

Source: Mitsubishi Electric resmi servis kilavuzu (bagimsiz cift-dogrulandi) — Mitsubishi Electric Mr. SLIM error code table (PAR-21MAA MA remote controller manual / Mr. Slim error code reference, e.g. Mitsubishi Electric Singapore "Mr. Slim error Code.pdf" and PAR-21MAA Technical/Service Manual error code list, ManualsLib p.48): code EF = "Check code is not defined. Check if remote controller…

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