Daikin C-Series Especificações descarregar pdf (Página 103)

100

Troubleshooting

Diagnostic Guidelines

By means of pressure readings:

Data

Circuit

Pressure

Probable cause

Too low

A little low

Normal

A little high

Too high

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 ﬁ lter 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 ﬁ lter 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.

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