McQuay M4MC Spécifications télécharger pdf (Page 62)

Restrict ed

Air

circulation

Cl ean t he coil

Cl ean t he fil te

Ch ange o r repa ir t he m otor

Remo ve the o bst ructi on

Hi gh heating

load

W in do ws / do ors wi de

ope n

Cl ose the w in dow s / doo rs

Refrigerant

circuit

Refrigerant sho rt c har ge

or re frigerant leakage

Ad d refri gera nt. Repa ir l e akage if de tected

Repa ir clo ggin g or replace fa ult y com po nents

Rep lace c omp ress or

Satisfactor y op era tion with temp eratur e differenc e of air

intake & disch arge of indoor un it 14°C to 20°C . *

( * value is for refe renc e on ly )

Restriction e.g. at strainer,

capillary, filter dryer, etc.

Obstruction at air inlet / outlet

of indoor / outdoor unit

Fan motor malfunction

Indoor air filter dirty

Indoor / outdoor coil

dirty (clogged)

Insufficient heating

Compressor

Less or no compression

(Low running current)

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McQuay M4MC Spécifications Page 62