“E1” Outdoor Unit Pcb Abnormality - Daikin Altherma EKHBH Series Service Manual

Error Codes: Outdoor Units
"E1" Outdoor Unit PCB Abnormality
3.2
1
Error code
Method of
malfunction
detection
Malfunction
decision conditions
3 3
Supposed causes
4
Troubleshooting
5
Caution
3–12
E1
Detect within the programme of the microcomputer that the programme is in normal running order.
When the programme of the microcomputer is in abnormal running order.
Out of control of microcomputer caused by external factors
Noise
Momentary fall of voltage
Momentary power loss
Defective outdoor unit PCB
Power on again
Error again?
NO
Check to see that the machine is
grounded.
Grounded?
YES
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
YES
NO
ESIE06-03
Replace the outdoor unit PCB.
Carry out grounding work.
The cause can be external
factors other than malfunction.
Investigate the cause of noise.
Part 3 – Troubleshooting