Daikin FTX50GV1B Manuel de service Page 80

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Vue de la page 79
Troubleshooting SiBE041029_A
70 Service Diagnosis
4.11 Outdoor Unit PCB Abnormality
Error Code
E1
Method of Error
Detection
The system checks if the microprocessor is working in order.
The system checks if the zero-cross signal comes in properly.
Error Decision
Conditions
The microprocessor program runs out of control.
The zero-cross signal is not detected.
Supposed
Causes
Defective outdoor unit PCB
Broken harness between PCBs
Noise
Momentary fall of voltage
Momentary power failure
Troubleshooting RX50/60G2V1B, 71 class
(R18284)
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
YES
NO
NO
YES
Turn on the power again.
Check to see if the unit is
grounded.
Replace the outdoor unit
PCB.
Ground the system.
The cause can be external
factors other than
malfunction.
Investigate the cause of
noise.
Error again?
Grounded?
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