Operation Halt Due To Detection Of Ct Error - Daikin FTK25JV1NB Manual

Si-86.book Page 67 Friday, June 23, 2000 10:26 AM
SIE-86
5.11 Operation Halt Due to Detection of CT Error(H8)
H H H H 8 8 8 8
Remote Controller
Display
5
Outdoor unit LED A
Display
Method of CT errors are detected using the compressor's operating frequency and the input current detected by the
Malfunction CT.
Detection
Malfunction
When the compressor's operating frequency is more than 62 Hz and the CT input is less than 0.1 V.
∗ Inlet current 0.75 A
Decision
Conditions
Supposed Causes
Troubleshooting
Check No.3
Refer to P.76
Check No.11
Refer to P.81
Service Diagnosis
4 4 3 3
1 2 3 4
When a CT error is generated 4 times, the system shuts down.
The malfunction counter will be reset unless the emergency stop will take place within sixty minutes of
the compressor operation time (as integrated time) after the return from the malfunction (including the
other emergency stops).
Faulty power transistor
Breaking of wire or faulty connection of internal wiring
Faulty outdoor PCB (1).
Turn off power, and turn on again.
YES
Does abnormality
display appear?
Current
(Approx)
NO
Operate unit.
∗ Is
operation current on
YES
power live like as
right figure?
NO
Check No.3
Check capacitor voltage.
YES
Is voltage
270±30 VDC?
NO
Check rectifier input voltage
YES
Is voltage generated?
Check No.11
NO
Check rectifier.
To section about thermistor
abnormalities
Capacitor will be charged
when MRM 10 is ON.
Current rize together
with frequency rize.
2sec Time
Replace outdoor unit PCB.
Replace outdoor unit PCB.
NO
Is resistance value normal?
Replace rectifier (diode module).
YES
Replace outdoor unit PCB.
Replace outdoor unit PCB.
Troubleshooting
(RF004)
67