McQuay M5MSX Spécifications télécharger pdf (Page 21)

19

Restricted

Insufficient heating

Air

circulation

Indoor / outdoor coil dirty

(clogged)

Indoor air filter dirty

Clean the coil

Clean the filter

Fan motor malfunction

Obstruction at air inlet /

outlet of indoor / outdoor

unit

Change or repair the motor

Remove the obstruction

High heating

load

Windows / doors wide

open

Close the windows / doors

Refrigerant

circuit

Restriction e.g. at

strainer, capillary, filter

dryer, etc.

Refrigerant short charge

or refrigerant leakage

Add refrigerant. Repair leakage if detected

Repair clogging or replace faulty components

Compressor

Less or no compression

(Low running current)

Replace compressor

Satisfactory operation with temperature difference of air

intake & discharge of indoor unit 14°C to 20°C. *

( * value is for reference only )

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