[E1] Fixed-Speed (1) High Pressure Sw System Alarm; [F0] Fixed-Speed (2) High Pressure Sw System Alarm - Toshiba HFCR407C Service Manual

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