McQuay M4MC Especificaciones Pagina 62

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Restrict ed
Air
circulation
Cl ean t he coil
Cl ean t he fil te
r
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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