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56
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.
DAIKIN_FT(Y).indb 56
DAIKIN_FT(Y).indb 56
10/15/2012 4:27:19 PM
10/15/2012 4:27:19 PM
Содержание FT-J series
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Страница 51: ...48 Wiring Diagram Indoor Unit Model FTY30FXV1 Outdoor Unit Model RY28CXV1...
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