McQuay M5LCX Specifiche Scaricare il pdf (Pagina 40)

Diagnostic Guidelines

By means of pressure reading:

Pressure

Data

Circuit

Too low

A little low

Normal

A little high

Too high

Probable cause

High side

Low side

●

1. Overcharged with refrigerant.

2. Non-condensable gases in refrigerant circuit (e.g. air)

3. Obstructed air-intake / discharge.

4. Hot air short circuiting in outdoor unit.

High side

Low side

●

1. Poor compression / no compression (compressor

defective)

2. Reversing valve leaking.

High side

Low side

●

1. Undercharged with refrigerant.

2. Refrigerant leakage.

3. Air filter clogged / dirty (indoor unit).

4. Indoor fan locked / seized.

5. Defective defrost control, outdoor coil freeze up (heating).

6. Outdoor fan locked / seized (heating).

High side

Low side

●

● 1. Outdoor fan blocked (cooling).

2. Outdoor coil dirty (cooling).

3. Indoor fan locked / seized (heating).

4. Indoor air filter clogged / dirty (heating).

5. Non-condensable gases in refrigerant circuit (e.g. air)

High side

Low side

●

1. Air intake temperature of indoor unit too high.

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 50 51

Commenti su questo manuale

Nessun commento

McQuay M5LCX Specifiche Pagina 40

Commenti su questo manuale

Prodotti e manuali riguardandi Climatizzatori a split McQuay M5LCX