Outdoor Unit Pcb Abnormality - Daikin FTKS20D3VMW Service Manual

SiENBE12-713

5.11 Outdoor Unit PCB Abnormality

E1
Remote Control
Display
Outdoor Unit LED A
Display
" Detect within the programme of the microcomputer that the programme is in normal running
Method of
Malfunction
Detection
" When the programme of the microcomputer is in abnormal running order.
Malfunction
Decision
Conditions
" Out of control of microcomputer caused by external factors
Supposed
Causes
" Defective outdoor unit PCB
Troubleshooting
Service Diagnosis
5 1 4 2 4 3 4 4
order.
! Noise
! Momentary fall of voltage
! Momentary power loss
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Power on again
Error again?
NO
Check to see that the machine is
grounded.
Grounded?
YES
1
YES
NO
Troubleshooting
Replace the outdoor unit
PCB.
Carry out grounding work.
The cause can be external
factors other than
malfunction.
Investigate the cause of
noise.
(R5142)
249