117
Troubleshooting
Diagnostic procedure for check code
Check code
Operation cause
[E1]
1. Fixed-speed compressor high pressure SW error
Fixed-speed (1) high pressure
2. Fixed-speed compressor IOL operation
SW system alarm
3. Service valve closed
[F0]
4. Outdoor fan, capacitor error
Fixed-speed (2) high pressure
5. Indoor/Outdoor PMV blockage
SW system alarm
6. Outdoor heat exchanger blockage
7. SV2 circuit blockage
8. Miswiring of communication between indoor and
outdoor units
9. Pd sensor error
10. Refrigerant over-charge
[E1]: High pressure SW system error compressor 1 side
[F0]: High pressure SW system error compressor 2 side
Does the fixed-speed high
pressure SW operate ?
Are the fixed-speed high
pressure SW parts normal ?
Is service valve fully open ?
Does outdoor fan operate ?
Il circuito di bypass della SV2 è
normale?
Is the outdoor heat
exchanger blocked or is a
short circuit evident ?
Refrigerant over charge
Blockage
Pipe breakage
Abnormal overload
Check parts.
If defective, replace.
Open service valve fully.
Replace high pressure sensor.
Eliminate cause.
Is the capacitor and fan
motor normal ?
Are the characteristics of high
pressure sensor normal ?
See the judgment code
of fixed-speed IOL, OL
circuits “E6” “F1”.
Is the circuit wiring normal ?
Check and correct wiring.
Check outdoor interface PC board.
If defective, replace.
Is fixed-speed IOL
circuit normal ?
Is fixed-speed OCR
circuit normal ?
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
No
No
No
No
No
Yes
Repair failed position.
No
No
Yes
14
See the judgment code
of fixed-speed IOL, OL
circuits “E6” “F1”.
Содержание A90-0132
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